83 jobs found

Location: Kettering/Hybrid Do you enjoy building software solutions using modern .NET technologies that solve real-world problems and make a visible impact? This is a greenfield opportunity, giving you the chance to shape a modern .NET-based platform from the ground up, with React supporting the front end. At Logistex, your code doesn t just sit behind a screen, it powers warehouse operations, drives automation systems, and supports some of the UK s leading logistics and retail brands. If you re the kind of developer who enjoys building robust backend systems in .NET, tackling complex challenges, and seeing your work used in real environments this role is for you. Why join us as Senior Full Stack Developer? You ll play a key role in building a modern .NET-driven platform with React and PostgreSQL You ll work on a greenfield program with real influence on technical direction You ll collaborate with engineers, architects, and operational teams Your applications support real-world operations Key Responsibilities as Senior Full Stack Developer Designing and developing modern web applications with a strong focus on .NET (C#) Building scalable backend services and RESTful APIs Supporting frontend development using React (TypeScript beneficial) Contributing to architecture and technical design decisions Writing clean, maintainable, and well-tested code Working within Agile teams to deliver high-quality software Continuously improving systems, tools, and development practices About You: Strong commercial experience with C# and .NET (core focus) Experience building frontends with React (ideally TypeScript) Strong understanding of REST APIs and backend architecture Experience with relational databases (ideally PostgreSQL) Solid software engineering fundamentals and best practices Ability to write clean, scalable, and maintainable code Experience working in Agile environments What are you waiting for, make your application today

Senior Mobile QA Engineer (iOS & Android) 350 to 400 per day Outside IR35 Initial 6-Month Contract Hybrid (Stratford, London) Immediate Start Available Our trusted partner within the Ed-Tech sector, employing over 10,000 people across 100 countries and supporting more than 600 million users globally, is seeking an experienced Senior Mobile QA Engineer to join a high-profile product engineering team developing innovative mobile learning applications. This role is ideal for a QA professional with extensive experience testing native and cross-platform mobile applications across iOS and Android environments, coupled with a strong background in test automation and modern Agile delivery practices. Key Responsibilities Lead quality assurance activities across mobile applications, ensuring exceptional user experience on both iOS and Android platforms. Develop and execute comprehensive test strategies, test plans and test cases. Design, implement and maintain automated testing frameworks and tooling. Perform functional, regression, exploratory, performance, usability and compliance testing. Collaborate closely with Product Owners, Developers and Infrastructure teams throughout the SDLC. Identify, document and manage defects through to resolution. Support continuous improvement of QA processes, automation capabilities and CI/CD practices. Provide guidance on mobile testing best practices, device compatibility and platform-specific considerations. Essential Skills & Experience Proven experience as a Senior QA Engineer within a mobile application environment. Extensive testing experience across iOS and Android platforms. Strong hands-on experience with mobile automation tools such as Appium, Cypress, Selenium or Playwright. Experience testing APIs and backend services supporting mobile applications. Strong understanding of Agile delivery methodologies. Experience building and maintaining automated test suites. Knowledge of CI/CD pipelines and modern software delivery practices. Excellent communication and stakeholder management skills. Highly Desirable Experience testing AI-powered applications, conversational interfaces or chatbots. Experience with Python and/or TypeScript. Experience testing voice-enabled applications. Experience within Ed-Tech, Education, SaaS or Product-led organisations. Exposure to AWS cloud environments. Experience with performance, security or compliance testing. The interview process consists of two remote stages with the opportunity to start immediately.

Senior Java Engineer IntaPeople are partnered with a fintech scaleup in Cardiff city centre and are scaling up the Product Engineering team with a Senior Java Engineer. About the roles: The role is focused on feature delivery within product engineering. We re looking for an established Senior Engineer who coaches and mentors juniors and mid-level engineers, helping them develop their skills to progress within their careers. You'll take on challenging problems your team faces, including designing solutions to complex features and writing the design documentation that others build from. You'll work within the technical direction set by your Lead Engineer and be one of the people they rely on to turn that direction into working software. The tech stack is React and TypeScript on the frontend, Java with Spring Boot on the backend, and PostgreSQL with schema-per-tenant multi-tenancy underneath, all cloud-hosted on AWS. You'll hold the quality bar for your team through code review, pairing and the example you set, and you'll lead the delivery of large features. This company offers a structured roadmap in terms of progression; they champion internal progression and as a company that a consistently growing, more senior roles become available. About you: A background in financial services (specifically mortgages) would be ideal, however any experience or understanding of a highly regulated industry will be beneficial You re a hungry dev who wants to keep developing their skills, learning new things and collaborating with the wider team. You enjoy knowledge sharing and helping lesser experienced engineers develop their skills, you will have the opportunity to influence the technical direction in this role. An interest in GenAI is desirable, they have some agentic workflows built in Claude but they are using AI as a tool rather than replacing the team s ability to code. For a confidential chat about the role, send a copy of your CV to (url removed) and we will set up a call

Senior Full Stack Engineer 85,000 to 105,000 Permanent Remote, with occasional London office visits The opportunity Our client is hiring a Senior Full Stack Engineer to take ownership of building the next generation of customer-facing software in the energy market. The business operates in a complex, high-value sector and is using technology, data, and strong product thinking to modernise an industry that has historically been underserved by great software. We have already recruited 4 people into the business, and all 4 are still there. We know the company and team well and are pleased to be supporting them again on this important hire. This is a genuinely high-impact opportunity for an experienced engineer who is equally comfortable across frontend and backend development. You will take the lead on building new products and developing the codebase, with significant autonomy over technical decisions, architecture, and delivery. The position can be fully remote, although the business would welcome occasional visits to its Mayfair office for collaboration and team time. The role This is a true full stack position. They need someone strong in React and TypeScript who can build polished, reliable customer-facing software, but who is equally capable of contributing across backend services, APIs, application logic, databases, and data-rich workflows. The platform supports complex energy processes across areas such as billing, metering, consumption, reporting, and asset performance. You will be responsible for taking those workflows and turning them into clear, scalable products that customers genuinely value. Initially, you will lead much of the engineering work independently. You will not, however, be expected to operate without support. The business can provide access to external engineering expertise and additional coding support where needed as the platform and codebase develop. This role offers genuine autonomy. You will have the freedom to make sensible technical decisions, shape engineering standards, and influence how the product evolves as the company grows. What you will be doing Leading the development of customer-facing products from initial concept through to production Building modern frontend applications using React and TypeScript Designing and developing backend services, APIs, integrations, and application logic Working with Python, SQL, databases, and data platforms Taking ownership of architecture, technical decisions, and engineering standards Helping define the future engineering team and technical direction as the business expands What they are looking for Strong commercial experience across both frontend and backend engineering Excellent React and TypeScript capability Strong backend development experience, ideally including Python Good experience with APIs, databases, SQL, and system integrations A track record of leading projects or taking ownership of major technical workstreams Experience building customer-facing software from scratch Strong product instincts and the ability to think beyond individual tickets Confidence making technical decisions and working with a high level of autonomy Excellent communication skills and the ability to work closely with technical and non-technical stakeholders Personality and attitude are particularly important. They want someone positive, proactive, collaborative, and genuinely enthusiastic about building great software. The right person will bring energy to the team, take responsibility, and approach challenges with a practical and constructive mindset. Nice to have Startup or scale-up experience Energy, utilities, trading, sustainability, or fintech experience Data visualisation experience Experience working with Databricks or similar data platforms Experience using AI-assisted development tools Previous involvement in shaping engineering teams, standards, or architecture Why join A salary of 85,000 to 105,000 + Bonus The flexibility to work remotely Occasional collaboration from the Mayfair office Real autonomy over what gets built and how it is delivered Support from external engineering resources when required Broad exposure across frontend, backend, data, architecture, and product Long-term scope to help build and shape the engineering function A growing business operating in a complex and important energy market Summary This is an excellent opportunity for a Senior Full Stack Engineer who wants meaningful ownership rather than simply maintaining an established platform. You will lead the development of customer-facing software, work across React, TypeScript, Python, APIs, databases, and data-rich systems, and have the autonomy to shape the technical direction of a growing energy business. They are looking for someone technically strong, but equally importantly, someone with an excellent attitude who is positive, engaging, and excited by the opportunity to build.

Technical Manager (Python/AWS) Hybrid West London We re looking for an experienced Technical Team Lead (Python) to lead a talented multidisciplinary engineering teams. This is an exciting opportunity for a hands-on technical leader who enjoys building scalable products, mentoring engineers, and driving high-performing teams in a fast-paced environment. What You ll Be Doing Leading and mentoring a collaborative engineering team Driving sprint planning and prioritising backlog tasks Overseeing the development, testing, and deployment of software projects Ensuring code quality, scalability, and engineering best practices Collaborating closely with Product Managers and stakeholders Improving engineering processes and delivery standards Developing new features and supporting production systems Helping shape modern, cloud-based technical solutions What We re Looking For 7+ years of software development experience 3+ years in a technical leadership role Strong expertise in Python Experience with modern frameworks and engineering tools Strong AWS/cloud experience (AWS preferred) Experience with Data Platforms, ETLs, or Data Science environments Excellent communication and stakeholder management skills A proactive mindset with strong problem-solving ability Tech Environment Python AWS Cloud Modern frontend/backend frameworks DevOps & CI/CD tooling Data platforms and scalable architectures Location Hybrid West London, Hounslow (2 days per week onsite) Why Join? Highly competitive salary package Private medical insurance Join a fast-growing, innovative technology environment Work alongside a collaborative and multicultural team of tech experts Opportunity to make a real impact in a scaling business If you re passionate about leadership, modern engineering, and building high-quality products, we d love to hear from you.

Site Reliability Engineer (GCP & Kubernetes) London (Hybrid, 2 days onsite per week) 6-Month Contract Inside IR35 Competitive Day Rate We are looking for an experienced Site Reliability Engineer (SRE) to join a high-performing technology team responsible for building, securing, and operating cloud-native platforms that support innovative AI-driven applications. This is a key role focused on cloud infrastructure development, platform reliability, security hardening, and operational excellence . You will work closely with software engineers, platform teams, and technical stakeholders to design, deploy, and maintain resilient production systems capable of supporting complex and scalable workloads. You will be responsible for the reliability, performance, scalability, and security of cloud-based applications and infrastructure, ensuring services are delivered efficiently and operate effectively in production environments. Key Responsibilities: Design, build, and maintain cloud infrastructure within Google Cloud Platform (GCP). Deploy, manage, and optimise Kubernetes-based environments and containerised applications. Develop and support backend services and operational tooling using Python. Create and maintain Infrastructure as Code using Terraform. Implement security hardening, monitoring, observability, and reliability best practices across cloud platforms. Troubleshoot and resolve complex production issues, ensuring minimal service disruption. Develop and improve CI/CD pipelines to enable efficient and reliable software delivery. Work closely with development teams to improve platform resilience, scalability, and operational performance. Implement monitoring, alerting, and incident response processes to support production systems. Drive automation initiatives to reduce operational overhead and improve system reliability. We're Looking For: Proven experience as a Site Reliability Engineer, Platform Engineer, Cloud Engineer, or DevOps Engineer . Strong hands-on experience with Google Cloud Platform (GCP) . Experience deploying, operating, and supporting production cloud applications at scale . Strong knowledge of Kubernetes and container orchestration technologies. Commercial experience developing with Python . Experience building and supporting backend services and APIs, ideally using FastAPI . Strong knowledge of Terraform and Infrastructure as Code principles. Experience designing highly available, resilient, and secure cloud environments. Strong troubleshooting and incident management skills within production environments. Experience with CI/CD pipelines, Git, GitHub, and DevOps best practices . Strong understanding of cloud networking concepts, with particular emphasis on GCP networking . Ability to take ownership of production systems and drive continuous improvement initiatives. Desirable: Microsoft Azure experience. Experience deploying and supporting AI/ML applications in production environments. Exposure to Large Language Models (LLMs), NLP, or agent-based systems. Experience with observability and monitoring tools such as Sentry , Prometheus, Grafana, or similar platforms. Strong Docker and multi-container application architecture experience. Experience working within scientific, pharmaceutical, genomics, or bioinformatics environments. Start-up or high-growth technology company experience. Open-source software contributions. Technical leadership, mentoring, or coaching experience. Contract Details: 6-Month Initial Contract Inside IR35 London-based Hybrid Working (2 days onsite per week) Competitive Day Rate Potential extension opportunities The Opportunity This role offers the chance to work on modern cloud-native systems supporting innovative AI-enabled technologies. You'll be part of a collaborative engineering environment where reliability, automation, security, and scalability are key priorities, with the opportunity to make a significant impact on critical production platforms. If you're a Site Reliability Engineer or Platform Engineer with strong GCP, Kubernetes, Terraform, and Python experience, we'd love to hear from you.

Agentic AI Engineer (Python / LangGraph) Location: Burgess Hill - Hybrid (3 days/week) Role Type: Permanent, Full-Time The Role We are hiring a Python Engineer to build next-generation autonomous AI agents for a major global financial services hub. You will move beyond basic chatbots to design multi-step reasoning workflows and enterprise-grade Python APIs that let AI interact directly with real-world software tools. Key Responsibilities Agentic Orchestration: Build stateful AI workflows using LangGraph or LangChain . API & Backend Engineering: Write robust Python backends enabling LLMs to execute Function Calling and tool-use. Context & Memory: Optimize prompt engineering, context windows, and retrieval systems (RAG). What You Need Strong Python software development experience. Hands-on experience with GenAI frameworks ( LangGraph , LangChain , LlamaIndex, or CrewAI). Proven background in API design, tool-calling, and LLM orchestration. Interested? Apply today with your updated CV to set up an initial call! Randstad Technologies Ltd is a leading specialist recruitment business for the IT & Engineering industries. Please note that due to a high level of applications, we can only respond to applicants whose skills & qualifications are suitable for this position. No terminology in this advert is intended to discriminate against any of the protected characteristics that fall under the Equality Act 2010. For the purposes of the Conduct Regulations 2003, when advertising permanent vacancies we are acting as an Employment Agency, and when advertising temporary/contract vacancies we are acting as an Employment Business.

We're supporting a high-profile UK Government digital programme and are looking for Senior Python Developers and Technical Leads with strong Python & Django expertise to join a multidisciplinary agile team delivering secure, user-focused digital services. The Role You'll play a key role in designing, developing and supporting scalable backend services used within a secure government environment. Technical Leads will also provide technical guidance, mentor engineers and help shape architecture and engineering best practices while remaining hands-on. What You'll Be Doing Develop secure, scalable applications using Python & Django Design and build RESTful APIs Contribute to system architecture and technical design Work within Agile, multidisciplinary delivery teams Write clean, well-tested code using TDD principles Support live services and drive continuous improvement (Technical Leads) Mentor developers and provide technical leadership across squads Essential Skills Strong commercial experience with Python Excellent hands-on experience with Django REST API development System design and software architecture experience Agile delivery experience Test-Driven Development (TDD) Cloud platform experience (AWS, Azure or GCP) Excellent communication and stakeholder engagement skills Desirable Government Digital Service (GDS) experience UK Government or Public Sector projects Experience working in secure or regulated environments Requirements Active SC Clearance is highly advantageous. Able to work 40% onsite (approximately 2 days per week) in London, Manchester, Birmingham or Cardiff Up to 650/day (Senior Developer) Up to 720/day (Technical Lead) 12-Month Contract Inside IR35

Lead Data Engineer Location: London (Hybrid) Salary: 80,000- 115,000 Hexwired has partnered with an exciting AI start-up developing an intelligent automation platform that is transforming the B2C service. They're now looking for a Lead Data Engineer to design and build the data infrastructure that will power the next generation of their AI platform. As one of the first senior data hires, you'll take ownership of the company's data architecture, building scalable pipelines, real-time data processing systems and AI-ready infrastructure while helping shape the future engineering team. Key Responsibilities Design and build scalable batch and real-time data pipelines. Develop data ingestion, transformation and storage solutions for operational and AI workloads. Build and optimise vector search, retrieval systems and ML data pipelines. Ensure data reliability, governance, monitoring and observability across the platform. Work closely with AI, backend and product teams to support model training, inference and product development. Optimise large-scale datasets and database performance. Help define engineering standards and mentor future data engineers. Requirements 7+ years' experience in Data Engineering or Backend Engineering. Strong Python development experience. Experience building distributed data platforms and scalable pipelines. Excellent knowledge of PostgreSQL (or similar relational databases) and NoSQL databases. Experience with vector databases such as Qdrant, Milvus or pgvector . Familiarity with technologies such as Apache Spark, Airflow, Kafka, Elasticsearch/OpenSearch, Pandas and Polars . Strong understanding of data modelling, storage architecture and performance optimisation. Desirable Experience working on AI or Machine Learning platforms. Knowledge of cloud platforms (AWS, Azure or GCP). JavaScript/Node.js experience. Event-driven architecture and stream processing experience. Previous experience within a high-growth start-up environment. What's on Offer Competitive salary with equity options. The opportunity to shape the data architecture of a rapidly growing AI business. Work directly alongside founders and senior engineers. High levels of ownership, autonomy and technical influence. The chance to build technology that is transforming an entire industry. If you're an experienced Data Engineer looking to play a key role in building the foundations of an innovative AI platform, we'd love to hear from you. Apply today by contacting Hexwired Recruitment. For more information on this role, or any other jobs across; Embedded, C++ programming, Embedded Linux, Golang Development, FPGA, Python, Javascript, C#, Electronics, Secure Boot, Power Electronics, Digital Design, Machine Learning, Data Science or Simulation contact us today.

Staff Machine Learning Engineer Remote Salary 100,000- 200,000 (flexible) Hexwired Recruitment has partnered with an exciting AI software company developing advanced machine learning products that solve complex, real-world problems. They're looking for a Technical Lead to bridge research and engineering, taking cutting-edge models from experimentation into robust production systems. The Role This is a senior hands-on leadership position where you'll own the execution of the company's machine learning platform, working closely with research, software engineering and product teams to build scalable, production-grade AI solutions. Responsibilities Own the end-to-end machine learning lifecycle, including data pipelines, model training, evaluation, inference and deployment. Fine-tune and optimise large language models using modern techniques such as LoRA, QLoRA, supervised fine-tuning, preference optimisation and model distillation. Design scalable inference infrastructure with a focus on latency, reliability and operational efficiency. Build and maintain high-quality data pipelines for both synthetic and real-world datasets. Develop robust evaluation frameworks covering model quality, robustness, safety and performance. Optimise GPU utilisation, memory usage and inference performance for production deployments. Work closely with software engineers to integrate ML capabilities into backend services and customer-facing products. Lead technical delivery, mentor engineers and help shape engineering best practices. Balance research ambitions with practical engineering trade-offs to deliver value quickly. Technology Python PyTorch and/or JAX Large-scale GPU training and inference infrastructure Modern ML deployment pipelines Ideal Experience Proven experience delivering machine learning systems into production. Strong understanding of modern foundation models and large language models. Experience building scalable training and inference infrastructure. Excellent software engineering skills with a focus on maintainable, production-quality code. Comfortable leading technical delivery while remaining hands-on. Strong communication skills and the ability to collaborate across research, engineering and product teams. If you are an experienced Staff Machine Learning Engineer looking for a new remote opportunity paying a market-leading salary up to 200,000. Apply today by contacting Hexwired Recruitment. For more information on this role, or any other jobs across; Embedded, C++ programming, Embedded Linux, Golang Development, FPGA, Python, Javascript, C#, Electronics, Secure Boot, Power Electronics, Digital Design, Machine Learning, Data Science or Simulation contact us today.

We're supporting a high-profile UK Government digital programme and are looking for Senior Python Developers and Technical Leads with strong Python & Django expertise to join a multidisciplinary agile team delivering secure, user-focused digital services. The Role You'll play a key role in designing, developing and supporting scalable backend services used within a secure government environment. Technical Leads will also provide technical guidance, mentor engineers and help shape architecture and engineering best practices while remaining hands-on. What You'll Be Doing Develop secure, scalable applications using Python & Django Design and build RESTful APIs Contribute to system architecture and technical design Work within Agile, multidisciplinary delivery teams Write clean, well-tested code using TDD principles Support live services and drive continuous improvement (Technical Leads) Mentor developers and provide technical leadership across squads Essential Skills Strong commercial experience with Python Excellent hands-on experience with Django REST API development System design and software architecture experience Agile delivery experience Test-Driven Development (TDD) Cloud platform experience (AWS, Azure or GCP) Excellent communication and stakeholder engagement skills Desirable Government Digital Service (GDS) experience UK Government or Public Sector projects Experience working in secure or regulated environments Requirements Active SC Clearance is highly advantageous. Able to work 40% onsite (approximately 2 days per week) in London, Manchester, Birmingham or Cardiff Up to £650/day (Senior Developer) Up to £720/day (Technical Lead) 12-Month Contract Inside IR35

Job Title: Back End Software Engineer Location: Remote (Quarterly Planning Sessions Required) Remuneration: 600 per day via Umbrella Company Contract Details: Fixed Term Contract, 6 Months (Scope for Extension) Overview Our client is seeking a senior Back End Software Engineer to take the reins in designing, building, and supporting scalable cloud and on-premise platforms. This exciting role focuses on enhancing system performance, reliability, security, and automation while collaborating with development, QA, DevOps, and operational teams. The successful candidate will be a technical subject matter expert, driving engineering best practises and operational excellence in an Agile environment. Responsibilities: Design and deploy scalable, high-performance backend systems and platforms. Monitor, maintain, and optimise large-scale distributed systems. Automate deployments, infrastructure provisioning, and configuration management processes. Lead incident resolution, troubleshooting, and root cause analysis activities. Ensure systems meet security, compliance, and resilience requirements. Collaborate with engineering, QA, DevOps, and support teams to enhance platform performance. Support capacity planning and initiatives for future scalability. Maintain technical documentation and operational procedures. Champion Agile methodologies, including Scrum and Kanban. Required Skills & Experience: Strong experience with cloud platforms such as AWS, Azure, or GCP. Solid understanding of containerisation and orchestration technologies. Proven experience in building and maintaining CI/CD pipelines. Strong scripting or programming skills, particularly in Python, Bash, or PowerShell. In-depth knowledge of large-scale distributed systems and cloud infrastructure. Familiarity with monitoring and logging tools such as Splunk, Grafana, or ELK. Excellent troubleshooting and problem-solving capabilities. Understanding of security frameworks and compliance standards. Experience working in Agile development environments. Ideal Candidate The ideal candidate is a senior backend engineer with a robust background in cloud and platform engineering, capable of building resilient, scalable systems while championing automation and operational improvements. Comfort in a distributed environment, collaboration across teams, and ownership of system performance, reliability, and security are vital. This is a fantastic opportunity to make a significant impact within an innovative organisation. If you have the skills and experience needed to excel in this role, don't miss out! Apply now to contribute to a dynamic team dedicated to excellence and agility in software engineering. Pontoon is an employment consultancy. We put expertise, energy, and enthusiasm into improving everyone's chance of being part of the workplace. We respect and appreciate people of all ethnicities, generations, religious beliefs, sexual orientations, gender identities , and more. We do this by showcasing their talents, skills, and unique experience in an inclusive environment that helps them thrive. We use generative AI tools to support our candidate screening process. This helps us ensure a fair, consistent, and efficient experience for all applicants. Rest assured, all final decisions are made by our hiring team, and your application will be reviewed with care and attention.

Lead Backend Engineer - C++ Location: Solihull - Hybrid (2-3 days per week onsite) Salary: £65,000-£70,000 Are you an experienced C++ Engineer ready to take technical ownership and lead a backend engineering team? We're working with an established technology business developing sophisticated access control, security and workforce management solutions. They're expanding their R&D function and looking for a Lead Backend Engineer to help shape their backend platform, drive engineering standards and explore how modern AI technologies can enhance both their products and development processes. This is a hands-on leadership role where you'll remain close to the technology while mentoring engineers and influencing architecture, delivery and technical direction. What you'll be doing Leading the development and evolution of scalable backend systems Taking technical ownership of backend projects from planning through to delivery Designing, developing and maintaining APIs and backend services Driving improvements across performance, scalability, reliability and observability Identifying bottlenecks and optimising database queries and system performance Evaluating and implementing AI-powered tools and solutions Working closely with Product, Architecture, Frontend and QA teams Leading and mentoring backend engineers, promoting strong coding standards and engineering best practice Supporting sprint planning, technical decision-making and continuous improvement What we're looking for You'll be an experienced Backend or Lead Software Engineer with strong technical depth and the confidence to provide leadership within an engineering team. Key experience includes: Strong commercial C++ development experience Excellent knowledge of the C++ Standard Library, STL containers and algorithms Experience leading, mentoring or technically guiding software engineers Strong understanding of backend architecture, APIs and scalable systems Knowledge of database systems Experience developing, integrating or deploying AI/ML-powered solutions Exposure to LLMs, AI-assisted development tools and modern AI frameworks What's on offer Alongside the salary, you'll receive flexible working hours, a company pension, 24 days' annual leave with increases based on service, and 10% of your working time dedicated to your own projects and ideas. The role operates on a hybrid basis, with 2-3 days per week in the Solihull office. If you're a strong C++ backend engineer looking for a role that combines hands-on development, technical leadership and the opportunity to work with emerging AI technologies, we'd be keen to hear from you.

At CV-Library, we have a simple vision: to help the world to work and we are looking for exceptional and talented people to help us realise this vision in both UK and overseas markets. We are in a period of focused internal investment, following a year of key strategic acquisitions and significant investment across all parts of the business, from Tech and Data to People and HR, there's never been a more exciting time to join us or a better place to grow your career! The Role Hours: Monday-Friday, 9:00-17:30 Location: Fleet Working Pattern: Hybrid - twice a quarter We are looking for a Principal Software Engineer to provide technical leadership across our application estate. Following our multi-year re-platforming, our backend is now a collection of RESTful microservices managing state for our core data entities - meaning the majority of our business logic and product complexity now lives in our Next.js web client and React Native mobile app. This role carries ongoing influence over how those applications are built and evolve. This role is centred on driving alignment across teams and systems - owning the interface lifecycle (API specifications and event schemas), setting and managing engineering standards, and coordinating implementation approaches across Product, Architecture and Engineering. You will play a key role in shaping how our platform evolves, helping teams deliver independently while maintaining a cohesive and scalable system - carrying architectural vision into day-to-day engineering practice, and building proofs of concept where they de-risk or accelerate delivery. This is a highly collaborative role requiring strong communication, influence and the ability to build consensus across a diverse engineering organisation. Responsibilities: Own and evolve the interface specification lifecycle - REST API specifications and event schemas - including definition, documentation, versioning and governance Provide ongoing technical influence over the implementation of our Next.js web client and React Native mobile app, where the majority of our business logic and application complexity now resides Define, champion and manage engineering standards across the engineering organisation Act as the conduit for architectural vision, translating direction from Architecture into practical, deliverable approaches for engineering teams Maintain broad oversight across domains - web, mobile and backend microservices - identifying opportunities for simplification, reuse and consistency Build proofs of concept to validate approaches, de-risk complex changes and accelerate critical delivery Act as a bridge between web, mobile, backend and platform teams, ensuring alignment in how systems interact Drive clarity in system boundaries, contracts and integration patterns Facilitate cross-team technical discussions, building alignment and resolving ambiguity Identify and manage cross-cutting technical risks and dependencies Champion best practices in API and interface design, focusing on usability, scalability and maintainability Mentor engineers and technical leaders, particularly in systems thinking and across-domain design Ensure high-quality, accessible technical documentation Contribute hands-on to implementation when needed, particularly to unblock teams or de-risk complex changes What we're looking for Strong experience as a senior or lead engineer, with demonstrated impact beyond a single team Strong hands-on capability in modern full-stack web development; significant experience with Next.js and React is strongly preferred Experience across some or all of our core stack - MongoDB, PayloadCMS and React Native - is strongly preferred Deep experience designing, specifying and governing interfaces, including REST API specifications (e.g. OpenAPI) and event schemas, and managing them through their lifecycle Experience with AWS and Kubernetes/container orchestration is nice to have Familiarity with the wider technologies in our estate - Go, Perl, PHP, MySQL and Elasticsearch - is beneficial, supporting the broad domain oversight this role carries Proven ability to work across team boundaries, influencing technical direction and driving alignment Strong understanding of software architecture concepts and system design principles Excellent communication and consensus-building skills, with the ability to bring diverse stakeholders together Ability to navigate ambiguity and provide clarity in complex technical landscapes A systems-thinking mindset, with an interest in how different parts of a platform interact and evolve Experience supporting delivery through collaboration and influence rather than direct ownership Commitment to high standards in documentation, clarity and engineering quality Ability to context-switch between strategic thinking and practical implementation, depending on organisational needs We are actively committed to promoting a fully diverse and inclusive workforce and we welcome applications for this role from all candidates who meet the key requirements. Please do not hesitate to get in touch should you require any reasonable adjustments to assist with your application.

Lead Backend Engineer - C++ Location: Solihull - Hybrid (2-3 days per week onsite) Salary: £65,000-£70,000 Are you an experienced C++ Engineer ready to take technical ownership and lead a backend engineering team? We're working with an established technology business developing sophisticated access control, security and workforce management solutions. They're expanding their R&D function and looking for a Lead Backend Engineer to help shape their backend platform, drive engineering standards and explore how modern AI technologies can enhance both their products and development processes. This is a hands-on leadership role where you'll remain close to the technology while mentoring engineers and influencing architecture, delivery and technical direction. What you'll be doing Leading the development and evolution of scalable backend systems Taking technical ownership of backend projects from planning through to delivery Designing, developing and maintaining APIs and backend services Driving improvements across performance, scalability, reliability and observability Identifying bottlenecks and optimising database queries and system performance Evaluating and implementing AI-powered tools and solutions Working closely with Product, Architecture, Frontend and QA teams Leading and mentoring backend engineers, promoting strong coding standards and engineering best practice Supporting sprint planning, technical decision-making and continuous improvement What we're looking for You'll be an experienced Backend or Lead Software Engineer with strong technical depth and the confidence to provide leadership within an engineering team. Key experience includes: Strong commercial C++ development experience Excellent knowledge of the C++ Standard Library, STL containers and algorithms Experience leading, mentoring or technically guiding software engineers Strong understanding of backend architecture, APIs and scalable systems Knowledge of database systems Experience developing, integrating or deploying AI/ML-powered solutions Exposure to LLMs, AI-assisted development tools and modern AI frameworks What's on offer Alongside the salary, you'll receive flexible working hours, a company pension, 24 days' annual leave with increases based on service, and 10% of your working time dedicated to your own projects and ideas. The role operates on a hybrid basis, with 2-3 days per week in the Solihull office. If you're a strong C++ backend engineer looking for a role that combines hands-on development, technical leadership and the opportunity to work with emerging AI technologies, we'd be keen to hear from you.

Principal Backend Developer (C# / .NET) The Opportunity This is a career-defining role for a Principal Backend Developer who wants to be at the forefront of a growing SaaS organisation. You'll be joining a company that's scaling rapidly, building innovative products that make a real difference to its customers. This role offers the chance to take ownership of backend systems, shape best practice, and mentor the next generation of engineers. The Role You'll provide technical leadership across backend development, ensuring systems are robust, scalable, and future-proof. Working closely with product owners, testers, and front-end teams, you'll bring engineering excellence into every decision. With a stack centred on C#, .NET, cloud services, and automation frameworks, you'll be both hands-on in coding and guiding others to deliver their best work. Day-to-day responsibilities Architect and build scalable backend services in C# / .NET Drive adoption of clean coding practices, design patterns, and SOLID principles Mentor engineers, fostering a culture of growth, learning, and high performance Collaborate with product owners to refine requirements and translate them into technical solutions Integrate automation testing (Playwright) and CI/CD pipelines to ensure code quality Lead technical discussions, setting direction on tools, frameworks, and approaches Troubleshoot and resolve complex technical challenges across backend services Optimise system performance and ensure resilience across platforms Review code and guide engineering standards across the team Contribute to product strategy by aligning technical roadmaps with business goals What you bring to the team Strong experience developing backend systems with C# and .NET Deep knowledge of cloud environments (Azure preferred) Experience in designing APIs and microservices at scale Solid understanding of automation testing tools (Playwright desirable) Leadership experience - mentoring, coaching, and guiding engineering teams Strong problem-solving skills with an eye for performance optimisation Enthusiasm for delivering quality solutions in a SaaS environment Send your CV now 50249MSR INDMANS The Portfolio Group are acting on behalf of our client in recruiting for this position.

Senior Full-Stack Contractor (Platform & Data Contracts) Job Summary Join a high-impact engineering team during an exciting discovery MVP phase. This team builds platform tools to manage data contracts at the code level, driving overall data quality and preventing incidents across personalization engines and key stakeholder systems. Contract Details Duration: 6 Months Engagement Type: Contract (Individual Contributor) Key Responsibilities Lead frontend development while contributing to backend and infrastructure tasks ( 60-70% Frontend / 30-40% Backend & Data). Architect and build platform-level tooling and software interfaces for data contract management. Partner with engineering teams to integrate data contract workflows into existing development pipelines. Requirements Senior Frontend Expertise: Strong mastery of JavaScript (core skill requirement). Platform Experience: Proven background in internal platform or developer-tooling engineering (rather than pure consumer feature delivery). Full-Stack & Infra: Working knowledge of Java and general cloud infrastructure. AI Tooling: Comfort utilizing AI coding tools to accelerate delivery. Bonus: Experience or background in data engineering or data quality frameworks. Randstad Technologies is acting as an Employment Business in relation to this vacancy.

Senior Backend Software Engineer - Warminster, Hybrid - Security Cleared - 90,000 We're looking for an experienced engineer to join a collaborative technology team delivering mission-critical software used within a large scale UK defence programme. This is an opportunity to take ownership of major backend initiatives, influence technical direction, and work on systems where performance, reliability and security genuinely matter. The Opportunity You'll be helping to shape architecture, solve integration challenges and design scalable backend solutions that connect multiple enterprise platforms. Working as part of an experienced engineering team, you'll play a key role in evolving a modern software platform, integrating with data platforms, ERP systems and partner technologies while helping establish engineering best practices across the wider team. You'll have the autonomy to make technical decisions, mentor fellow engineers and contribute to the long term direction of both the product and engineering function. What You'll Be Doing Designing and developing scalable backend services and APIs Building integrations with enterprise systems, data platforms and third-party applications Making architectural decisions around backend services and data flows Implementing event-driven and real-time integration patterns where appropriate Writing clean, maintainable, well-tested code using modern engineering practices Improving CI/CD pipelines, automated testing and platform observability Working closely with engineers, product specialists, project managers and customer stakeholders Mentoring developers and helping raise engineering standards across the team About You You'll ideally have experience in: Strong backend development experience using Java (or another modern backend language with the ability to transition) Designing RESTful APIs and distributed backend systems SQL databases and data modelling System integration and enterprise application development Event-driven architectures and messaging technologies CI/CD pipelines, automated testing and modern development practices Making sound technical decisions and working through ambiguous requirements Mentoring engineers and leading technical delivery You'll be someone who enjoys solving difficult engineering problems, communicates well with both technical and non-technical stakeholders, and takes pride in delivering high-quality software. Security Requirements Due to the nature of the work, applicants must be UK Nationals and eligible to obtain Security Clearance (SC). Existing SC clearance is advantageous but not essential. Senior Backend Software Engineer - Warminster, Hybrid - Security Cleared - 90,000