4 jobs found

Senior Golang Engineer Fully Remote | Outside IR35 | Immediate Interviews Most Go contracts are either maintaining Legacy systems, sitting in endless meetings, or spending months waiting for decisions. This isn't one of them. We're looking for a Senior Golang Engineer to join a small, highly capable engineering team building and modernising business-critical platforms used by thousands of customers. You'll be working on genuinely interesting engineering challenges across cloud-native applications, distributed systems, APIs and platform modernisation projects, with the freedom to get stuck into the technical work rather than fighting process. If you enjoy building things, improving systems and solving problems, you'll probably enjoy this role. What you'll be working on Building scalable applications and services using Go Modernising Legacy platforms and helping shape future architecture Developing APIs and microservices used by customer-facing applications Working with modern cloud environments and DevOps tooling Collaborating with product, engineering and design teams to deliver new functionality Improving performance, reliability and maintainability across existing systems What we're looking for We're not looking for someone who ticks 25 boxes. The key things are: Strong commercial Golang experience Experience building APIs and microservices Cloud experience (AWS and/or Azure) Experience working in modern engineering environments It would also be useful if you've worked with: React C#/.NET Angular Kubernetes CI/CD pipelines Legacy modernisation projects Why people tend to like this sort of role Fully remote Outside IR35 Small engineering team where your work actually matters Modern technology stack Interesting technical challenges Fast interview process Opportunity to shape solutions rather than simply maintain them If you're a Golang engineer who enjoys building software and wants a contract where you'll actually be trusted to make an impact, we'd love to hear from you.

Senior Scientific Data Scientist / Pipeline Engineer Fully remote but can be hybrid upon request.6 Month Contract likely to extendOutside IR35£450 to £500 per day This is a chance to work on scientifically meaningful software that directly supports real-world discovery. You will take ownership of analytical pipelines that sit at the heart of a data-driven research platform, collaborating closely with scientists to turn complex experimental data into reliable, scalable insights. The Company They are a technology-led life sciences organisation operating at the intersection of biology, automation, and data. The business builds platforms that generate high-quality experimental data at scale and uses advanced analytics to accelerate scientific discovery. With a strong emphasis on rigour, reproducibility, and collaboration, they bring together engineers and scientists to solve complex research challenges. The Role and Deliverables Design, build, and maintain Python-based analytical pipelines for a range of experimental and bioassay data. Implement robust statistical and modelling workflows, including quality control, normalisation, and curve fitting. Translate scientific workflows into reproducible, automated analysis processes. Partner closely with laboratory-based scientists to understand experimental design and data requirements. Improve data structures and analysis readiness across the platform. Contribute to clear documentation and well-engineered, production-ready code. Your Skills & Experience Strong experience using Python for scientific or analytical software development. Proven capability analysing complex, structured experimental or assay-style datasets. Solid understanding of statistical modelling, curve fitting, and data quality control. Experience building end-to-end data or analysis pipelines with a focus on reproducibility. Comfortable using version control and applying sound software engineering practices. Able to communicate clearly with both technical and scientific stakeholders. How to Apply If you feel this role aligns with your skillset and would like to apply, please click the link below

Senior Backend Python Developer (Contract) Contract: Rolling 3-Month Contract Location: Fully Remote (UK Based Only) Rate: 300 per day IR35 Status: Outside IR35 Start Date: ASAP Please note: Applicants must be based in the UK. Sponsorship is not available for this position. The Opportunity We're working with a growing technology-driven organisation looking for a strong Senior Backend Python Developer to join their engineering team on an initial 3-month contract with a high likelihood of extension. This is a hands-on backend-focused role where you'll be responsible for designing, developing, and maintaining scalable services, APIs, and integrations that underpin critical business applications. You'll be working closely with architects, product teams, and fellow engineers to deliver high-quality solutions in a fast-paced Agile environment. The ideal candidate will be an experienced Python developer with a strong understanding of modern backend engineering principles, cloud-native development, and API design. Key Responsibilities Design, develop, and maintain scalable backend applications and services using Python Build and optimise RESTful APIs and microservices Develop integrations between internal and third-party systems Write clean, maintainable, and well-tested code Participate in technical design discussions and architectural decisions Troubleshoot, debug, and resolve complex technical issues Contribute to CI/CD pipelines and deployment processes Collaborate with product, engineering, and DevOps teams to deliver high-quality solutions Perform code reviews and champion engineering best practices Support ongoing improvements to performance, scalability, and security Required Skills & Experience Strong commercial experience developing backend applications using Python Experience building scalable APIs and distributed systems Strong understanding of software engineering best practices and design patterns Experience with relational databases such as PostgreSQL or MySQL Experience working with cloud platforms (AWS, Azure, or GCP) Familiarity with Docker and containerised deployments Experience with Git and collaborative development workflows Understanding of CI/CD pipelines and automated testing Experience working within Agile delivery environments Strong problem-solving and debugging skills Desirable Experience Experience with FastAPI, Django, or Flask Exposure to event-driven architectures and messaging technologies Experience building data-intensive applications Knowledge of infrastructure-as-code practices Bonus Skills Any commercial or personal experience with AI, Machine Learning, Generative AI, or Large Language Models (LLMs) would be highly beneficial, including: Integrating LLM APIs into applications Building AI-powered features or workflows Experience with OpenAI, Anthropic, Azure AI, LangChain, LlamaIndex, or similar technologies Retrieval-Augmented Generation (RAG) solutions AI agents and workflow automation What's on Offer 300 per day Fully remote working Outside IR35 engagement Rolling 3-month contract with extension potential Opportunity to work on modern technology and scalable systems Immediate interview and start process Please note: Candidates must be UK-based and have the unrestricted right to work in the UK. Sponsorship is not available.

Job Title: Senior Digital Accessibility Specialist - Audit Specialist Location: Fully remote working in the UK Salary/Rate: £500/day £550/day inside IR35 Start Date: October 2025 Job Type: 12 - month contract Company Introduction: We are currently representing a global publishing client, who are recruiting a Senior Digital Accessibility Specialist with very strong Accessibility Auditing experience for an exciting 12-month contract. Required Skills/Experience: The ideal candidate will have the following: Strong Accessibility Auditing experience is crucial. Specific experience conducting technical accessibility audits is extremely important. Being able to identify and solve technical accessibility defects is very important, too. Being able to negotiate effectively with stakeholders and work autonomously is a must. Being able to make high-level decisions is also required. Candidates will be asked to provide an audit report that they have written, and to provide evidence on how they conducted the report. They will also be asked to show the solutions that they provided. Strong experience in authoring high quality VPATs/ACRs for enterprise web applications. Expert knowledge of how to recommend WCAG 2.2 techniques around websites and digital content. Rich experience using accessibility testing tools (WAVE, aXe, Microsoft Insights, Color Contrast Analyzer) and with screen readers (JAWS, NVDA, VoiceOver). High degree of initiative and autonomy coupled with an ability to function successfully as part of a virtual team. Generosity in sharing knowledge, skills, and positive attitude in mentoring people to learn accessibility concepts. Job Responsibilities/Objectives: Strong experience authoring VPAT/Accessibility Conformance Reports (ACRs) against W3C WCAG 2.2 AA standards. Troubleshoots user accessibility issues, guiding product teams to solutions and coaching on appropriate testing tools. Author detailed specifications for remediating websites, mobile applications, and PDFs to meet the W3C WCAG 2.2 A standards. Work with core team developers and UX to test, steer, and validate designs and code to accessibility standards. Author product accessibility statements. Desirable Skills/Experience Although not essential, the following skills are desired by the client: IAAP Web Accessibility Specialist Certification or US DHS 508 Trusted Tester Certification. Previous roles or degree(s) in fields of Digital Accessibility, User Experience, Digital Design, or Software Engineering. Expert knowledge of and mobile application accessibility testing and techniques. Wide experience with user interface design patterns including rich Internet applications, single page web applications, and AI/chatbots. If you are interested in this opportunity, please apply now with your updated CV in Microsoft Word/PDF format. Disclaimer Notwithstanding any guidelines given to level of experience sought, we will consider candidates from outside this range if they can demonstrate the necessary competencies. Square One is acting as both an employment agency and an employment business, and is an equal opportunities recruitment business. Square One embraces diversity and will treat everyone equally. Please see our website for our full diversity statement.