Senior Product Engineer London Hybrid Startup 90,000 - 130,000 + meaningful equity Tech stack: Experience required across any of the following: Golang Rust TypeScript, Node.js React.js, Next.js AWS or GCP Most B2B SaaS products are effectively dashboards on top of a database. This isn't that. We're working with an Agentic AI startup building infrastructure and intelligent software systems that sit underneath large scale operational workflows and real time decision making processes. The platform processes very high volumes of live data, powers complex orchestration pipelines, and delivers AI driven functionality directly into customer environments at enterprise scale. The engineering challenges are genuinely difficult. Not "we use Kubernetes so we're scaling" difficult. More the kind of problems involving distributed systems, real time data ingestion, AI orchestration pipelines, and building software that customers rely on day to day inside production environments. The team is still small enough that every engineer materially changes the trajectory of the business. No giant hierarchy, no endless roadmap theatre, no Jira archaeology expedition trying to work out why a ticket exists. That means speaking to customers, understanding commercial context, shaping product direction, building systems, shipping to production, monitoring outcomes, and iterating quickly. You'll be working across: Real time event streaming systems handling very high traffic volumes AI powered workflows and orchestration pipelines Product engineering across backend infrastructure and frontend applications CRM and third party integration infrastructure Identity resolution and large scale data processing Systems where reliability and speed both matter because customers actively use what gets shipped The environment is best suited to engineers who: Enjoy ambiguity rather than waiting for perfect specs Think commercially as well as technically Want ownership rather than ticket queues Care about shipping quickly Like being close to founders, customers, and product decisions Have worked in strong start ups or fast moving product environments before Technical background matters, but mindset matters more. They're open to strong engineers from different backend ecosystems if you've built complex systems and can learn quickly. A few things worth knowing: High frequency of deployments per week Engineers use AI tooling heavily to improve speed and workflow efficiency Minimal meeting culture High trust environment with lots of autonomy Strong engineering standards without unnecessary process theatre Small team, meaningful ownership, direct impact If you're the type of engineer who likes solving hard problems with smart people, has energy & ambition, and actually seeing your work used in production by real customers, this is a very good opportunity. Send me an email at or send your CV via this ad to learn more.
May 15, 2026
Full time
Senior Product Engineer London Hybrid Startup 90,000 - 130,000 + meaningful equity Tech stack: Experience required across any of the following: Golang Rust TypeScript, Node.js React.js, Next.js AWS or GCP Most B2B SaaS products are effectively dashboards on top of a database. This isn't that. We're working with an Agentic AI startup building infrastructure and intelligent software systems that sit underneath large scale operational workflows and real time decision making processes. The platform processes very high volumes of live data, powers complex orchestration pipelines, and delivers AI driven functionality directly into customer environments at enterprise scale. The engineering challenges are genuinely difficult. Not "we use Kubernetes so we're scaling" difficult. More the kind of problems involving distributed systems, real time data ingestion, AI orchestration pipelines, and building software that customers rely on day to day inside production environments. The team is still small enough that every engineer materially changes the trajectory of the business. No giant hierarchy, no endless roadmap theatre, no Jira archaeology expedition trying to work out why a ticket exists. That means speaking to customers, understanding commercial context, shaping product direction, building systems, shipping to production, monitoring outcomes, and iterating quickly. You'll be working across: Real time event streaming systems handling very high traffic volumes AI powered workflows and orchestration pipelines Product engineering across backend infrastructure and frontend applications CRM and third party integration infrastructure Identity resolution and large scale data processing Systems where reliability and speed both matter because customers actively use what gets shipped The environment is best suited to engineers who: Enjoy ambiguity rather than waiting for perfect specs Think commercially as well as technically Want ownership rather than ticket queues Care about shipping quickly Like being close to founders, customers, and product decisions Have worked in strong start ups or fast moving product environments before Technical background matters, but mindset matters more. They're open to strong engineers from different backend ecosystems if you've built complex systems and can learn quickly. A few things worth knowing: High frequency of deployments per week Engineers use AI tooling heavily to improve speed and workflow efficiency Minimal meeting culture High trust environment with lots of autonomy Strong engineering standards without unnecessary process theatre Small team, meaningful ownership, direct impact If you're the type of engineer who likes solving hard problems with smart people, has energy & ambition, and actually seeing your work used in production by real customers, this is a very good opportunity. Send me an email at or send your CV via this ad to learn more.
Senior Frontend Engineer / Full Stack Product Engineer - Energy About the Role Our client is hiring a Frontend Engineer / Full Stack Product Engineer to help build the software that their customers interact with directly, as they continue to scale their product and technology function. We have already recruited 3 individuals to the company and are pleased to be supporting them again on this key hire. The role is based in Mayfair, London and operates on a hybrid basis, ideally with 3 days per week in the office initially. This is not a standard frontend role. The business is looking for someone with strong frontend capability, but also enough full stack knowledge to work closely with leadership on the wider software build. They need someone who can operate with a high level of ownership, move quickly, and help shape both product and engineering direction in a growing business. Senior Frontend Engineer / Full Stack Product Engineer - Role Purpose We are looking for a Frontend Engineer / Full Stack Product Engineer to build the software that customers interact with directly, while also working in parallel with the wider software team on broader technical delivery. This person will be responsible for turning complex operational and commercial data into interfaces that are clear, reliable, and genuinely useful. The product includes energy-related workflows such as metering, billing, consumption, reporting, and asset performance, but the client is also very open to candidates who have built in similarly complex environments such as trading or fintech. You will own key customer-facing product areas, work closely with data and backend teams, engage directly with stakeholders, and help decide what to build, how to build it, and how to improve it over time. They are especially keen to find someone enthusiastic about AI and modern AI-powered development tools, as well as someone open to integrating AI agents and automation into the product over time. This is a highly visible role within a small team, so a junior mindset is unlikely to be the right fit. They need someone confident operating without heavy direction. Senior Frontend Engineer / Full Stack Product Engineer - Key Responsibilities 1. Build Customer Platforms Design and build the interfaces through which customers view and interact with complex business data, including consumption, billing, operational workflows, reporting, and asset-related information Take ownership of the frontend codebase, defining architecture, component structure, and engineering standards Work closely with backend and data teams to create clean API integrations and iterate on UX based on customer feedback 2. Work Across the Stack Bring enough backend knowledge to work effectively alongside leadership on the software side Read APIs confidently, understand schemas, and contribute to broader technical decision-making Support end-to-end product development rather than operating as a purely UI-focused engineer 4. Help Shape Engineering Practice Set up component libraries, testing approaches, and development conventions that the team will build on Help create an environment that is easy to onboard into as the team and product grow Work closely with the founding team to prioritise effectively, balancing speed of delivery with durability 5. Embrace AI and Modern Development Tools Use AI-powered programming tools to improve speed, quality, and engineering output Show willingness to work with AI and integrate agent-based workflows into software where useful Contribute to a forward-thinking engineering culture that embraces modern tooling in a practical way Stay open to new ways of building software in a fast-evolving technical environment 6. Stay Close to the Customer and the Market Engage directly with customers and internal stakeholders to understand how the product is being used and where it can improve Build a working understanding of the UK energy market and wider commercial context Bring relevant ideas from previous sectors such as energy, trading, or fintech into the product What We're Looking For Strong frontend fundamentals across HTML, CSS, JavaScript, and a modern framework, ideally React A track record of shipping customer-facing products and being able to demonstrate their impact Strong product instinct, with the ability to think beyond the brief and focus on what users actually need Enough backend knowledge to work effectively across the stack and contribute beyond pure UI delivery Comfortable operating with limited direction in a fast-moving environment Someone who enjoys ownership, pace, and building from the ground up Genuine enthusiasm for AI, modern engineering tools, and the integration of AI into software products Nice to Have 3-5+ years building customer-facing software in a product-led, startup, or scale-up environment Experience with data visualisation libraries and presenting large, complex datasets clearly Exposure to energy, trading, fintech, utilities, or another technically complex B2B sector Experience setting up a frontend codebase from scratch Enough backend familiarity to read APIs, spot schema issues, and work effectively across the stack Experience contributing to architecture and technical decision-making, not just implementation What You'll Get A highly owned role at the centre of what customers actually see and use The opportunity to shape a product from an early stage into something customers rely on Close collaboration with a small leadership team, with direct input into product and technical direction The chance to build expertise across energy data, customer software, AI-enabled development, and complex product delivery Long-term scope to grow with the company as its customer base and platform expand Why Join? This Frontend Engineer / Full Stack Product Engineer opportunity offers the chance to join a business at an exciting stage of growth, where one very strong hire can have a major impact.
May 14, 2026
Full time
Senior Frontend Engineer / Full Stack Product Engineer - Energy About the Role Our client is hiring a Frontend Engineer / Full Stack Product Engineer to help build the software that their customers interact with directly, as they continue to scale their product and technology function. We have already recruited 3 individuals to the company and are pleased to be supporting them again on this key hire. The role is based in Mayfair, London and operates on a hybrid basis, ideally with 3 days per week in the office initially. This is not a standard frontend role. The business is looking for someone with strong frontend capability, but also enough full stack knowledge to work closely with leadership on the wider software build. They need someone who can operate with a high level of ownership, move quickly, and help shape both product and engineering direction in a growing business. Senior Frontend Engineer / Full Stack Product Engineer - Role Purpose We are looking for a Frontend Engineer / Full Stack Product Engineer to build the software that customers interact with directly, while also working in parallel with the wider software team on broader technical delivery. This person will be responsible for turning complex operational and commercial data into interfaces that are clear, reliable, and genuinely useful. The product includes energy-related workflows such as metering, billing, consumption, reporting, and asset performance, but the client is also very open to candidates who have built in similarly complex environments such as trading or fintech. You will own key customer-facing product areas, work closely with data and backend teams, engage directly with stakeholders, and help decide what to build, how to build it, and how to improve it over time. They are especially keen to find someone enthusiastic about AI and modern AI-powered development tools, as well as someone open to integrating AI agents and automation into the product over time. This is a highly visible role within a small team, so a junior mindset is unlikely to be the right fit. They need someone confident operating without heavy direction. Senior Frontend Engineer / Full Stack Product Engineer - Key Responsibilities 1. Build Customer Platforms Design and build the interfaces through which customers view and interact with complex business data, including consumption, billing, operational workflows, reporting, and asset-related information Take ownership of the frontend codebase, defining architecture, component structure, and engineering standards Work closely with backend and data teams to create clean API integrations and iterate on UX based on customer feedback 2. Work Across the Stack Bring enough backend knowledge to work effectively alongside leadership on the software side Read APIs confidently, understand schemas, and contribute to broader technical decision-making Support end-to-end product development rather than operating as a purely UI-focused engineer 4. Help Shape Engineering Practice Set up component libraries, testing approaches, and development conventions that the team will build on Help create an environment that is easy to onboard into as the team and product grow Work closely with the founding team to prioritise effectively, balancing speed of delivery with durability 5. Embrace AI and Modern Development Tools Use AI-powered programming tools to improve speed, quality, and engineering output Show willingness to work with AI and integrate agent-based workflows into software where useful Contribute to a forward-thinking engineering culture that embraces modern tooling in a practical way Stay open to new ways of building software in a fast-evolving technical environment 6. Stay Close to the Customer and the Market Engage directly with customers and internal stakeholders to understand how the product is being used and where it can improve Build a working understanding of the UK energy market and wider commercial context Bring relevant ideas from previous sectors such as energy, trading, or fintech into the product What We're Looking For Strong frontend fundamentals across HTML, CSS, JavaScript, and a modern framework, ideally React A track record of shipping customer-facing products and being able to demonstrate their impact Strong product instinct, with the ability to think beyond the brief and focus on what users actually need Enough backend knowledge to work effectively across the stack and contribute beyond pure UI delivery Comfortable operating with limited direction in a fast-moving environment Someone who enjoys ownership, pace, and building from the ground up Genuine enthusiasm for AI, modern engineering tools, and the integration of AI into software products Nice to Have 3-5+ years building customer-facing software in a product-led, startup, or scale-up environment Experience with data visualisation libraries and presenting large, complex datasets clearly Exposure to energy, trading, fintech, utilities, or another technically complex B2B sector Experience setting up a frontend codebase from scratch Enough backend familiarity to read APIs, spot schema issues, and work effectively across the stack Experience contributing to architecture and technical decision-making, not just implementation What You'll Get A highly owned role at the centre of what customers actually see and use The opportunity to shape a product from an early stage into something customers rely on Close collaboration with a small leadership team, with direct input into product and technical direction The chance to build expertise across energy data, customer software, AI-enabled development, and complex product delivery Long-term scope to grow with the company as its customer base and platform expand Why Join? This Frontend Engineer / Full Stack Product Engineer opportunity offers the chance to join a business at an exciting stage of growth, where one very strong hire can have a major impact.
Senior Product Engineer, Full Stack - Energy 70,000 to 95,000 Permanent London, hybrid The opportunity Our client is hiring a Senior Product Engineer, Full Stack, to help build the next generation of customer-facing software in the energy market. Operating in a complex, high-value sector, the business is combining technology, data, and product thinking to modernise an area of the energy industry that has historically been underserved by great software. We have already placed 3 people into the business and are pleased to be supporting them again on this important hire. This is a genuinely exciting opportunity for a frontend-strong engineer who wants real ownership, autonomy, and the chance to build products from scratch. They are looking for someone with strong React and TypeScript capability, alongside solid backend exposure across Python, APIs, and databases. As a Senior Product Engineer, Full Stack, you will play a key role in shaping what gets built, how it is built, and how it evolves as the business scales. For the right person, this is a chance to join a growing company at the right stage and make a visible impact. The role is based in Mayfair, London, with a hybrid setup of 2 to 3 days per week in the office. The role This Senior Product Engineer, Full Stack role has a clear frontend lean. They need someone who can build high-quality frontend products from scratch, while also working confidently across backend services, integrations, and data-driven workflows. The frontend is a central part of the brief, but they want someone who understands the wider system and can contribute beyond the UI. The product sits in a data-rich environment, with workflows across billing, metering, reporting, consumption, and asset performance. They need an engineer who can take complexity and turn it into clean, reliable software that customers genuinely value. This is a high-ownership role in a growing team, well suited to someone who enjoys pace, autonomy, and being trusted to deliver. What you will be doing Building customer-facing products from scratch using React, TypeScript, and modern frontend tooling Owning frontend quality, user experience, and engineering standards Contributing across the stack, including backend integrations, APIs, product logic, and Python-based services Working with SQL, Databricks, and related data systems Turning complex operational and commercial workflows into clear product experiences Collaborating closely with product, engineering, data, and leadership Helping shape technical standards and architecture as the team grows What they are looking for Strong React and TypeScript experience A frontend-strong engineer who can build products from scratch Solid backend exposure, ideally with Python Experience with databases and data platforms such as SQL and Databricks Experience building customer-facing software in a commercial environment Strong product instincts and a practical, hands-on approach Comfortable with ownership, pace, and autonomy Nice to have Energy, trading, or fintech experience Startup or scale-up background Data visualisation experience Interest in AI tools and modern engineering practices Why join High ownership from day one The chance to build frontend products from scratch Real influence over product and technical direction Broad exposure across frontend, backend, data, and product Strong long-term growth potential as the business scales Summary This is a strong opportunity for a Senior Product Engineer, Full Stack who wants to build meaningful products in the energy market, with real autonomy and scope to grow. If you are strong in React and TypeScript, but also comfortable across backend systems, Python, APIs, and data platforms, this role offers the chance to make a genuine impact in a growing business.
May 14, 2026
Full time
Senior Product Engineer, Full Stack - Energy 70,000 to 95,000 Permanent London, hybrid The opportunity Our client is hiring a Senior Product Engineer, Full Stack, to help build the next generation of customer-facing software in the energy market. Operating in a complex, high-value sector, the business is combining technology, data, and product thinking to modernise an area of the energy industry that has historically been underserved by great software. We have already placed 3 people into the business and are pleased to be supporting them again on this important hire. This is a genuinely exciting opportunity for a frontend-strong engineer who wants real ownership, autonomy, and the chance to build products from scratch. They are looking for someone with strong React and TypeScript capability, alongside solid backend exposure across Python, APIs, and databases. As a Senior Product Engineer, Full Stack, you will play a key role in shaping what gets built, how it is built, and how it evolves as the business scales. For the right person, this is a chance to join a growing company at the right stage and make a visible impact. The role is based in Mayfair, London, with a hybrid setup of 2 to 3 days per week in the office. The role This Senior Product Engineer, Full Stack role has a clear frontend lean. They need someone who can build high-quality frontend products from scratch, while also working confidently across backend services, integrations, and data-driven workflows. The frontend is a central part of the brief, but they want someone who understands the wider system and can contribute beyond the UI. The product sits in a data-rich environment, with workflows across billing, metering, reporting, consumption, and asset performance. They need an engineer who can take complexity and turn it into clean, reliable software that customers genuinely value. This is a high-ownership role in a growing team, well suited to someone who enjoys pace, autonomy, and being trusted to deliver. What you will be doing Building customer-facing products from scratch using React, TypeScript, and modern frontend tooling Owning frontend quality, user experience, and engineering standards Contributing across the stack, including backend integrations, APIs, product logic, and Python-based services Working with SQL, Databricks, and related data systems Turning complex operational and commercial workflows into clear product experiences Collaborating closely with product, engineering, data, and leadership Helping shape technical standards and architecture as the team grows What they are looking for Strong React and TypeScript experience A frontend-strong engineer who can build products from scratch Solid backend exposure, ideally with Python Experience with databases and data platforms such as SQL and Databricks Experience building customer-facing software in a commercial environment Strong product instincts and a practical, hands-on approach Comfortable with ownership, pace, and autonomy Nice to have Energy, trading, or fintech experience Startup or scale-up background Data visualisation experience Interest in AI tools and modern engineering practices Why join High ownership from day one The chance to build frontend products from scratch Real influence over product and technical direction Broad exposure across frontend, backend, data, and product Strong long-term growth potential as the business scales Summary This is a strong opportunity for a Senior Product Engineer, Full Stack who wants to build meaningful products in the energy market, with real autonomy and scope to grow. If you are strong in React and TypeScript, but also comfortable across backend systems, Python, APIs, and data platforms, this role offers the chance to make a genuine impact in a growing business.
Senior Full-Stack Product Engineer Remote Working Up to £110,000 + Benefits Are you a passionate full-stack engineer who thrives in building end-to-end features that users love? We're partnering with a fast-growing, fully remote tech company on a mission to empower product teams to deliver world-class user experiences - and they're looking for a Senior Full-Stack Product Engineer to join their ambitious team. Why this role? Join a remote-first company where flexibility is at the heart of how they work. Be part of a close-knit engineering team (10 engineers in a 50-person company) where your work has a direct impact on tens of thousands of weekly users. Take full ownership of features, from concept to release, and feel the pride when users love what you've built. Shape not just the product, but also team processes, culture, and the company's future growth. ? What you'll be doing: Owning features from start to finish - collaborating with designers and PMs, building, testing, and releasing. Developing across the stack: React on the front end, Rails on the back end, with AWS infrastructure. Ensuring every feature is polished with strong attention to UX and quality. Getting involved beyond traditional engineering: support queries, product roadmap discussions, and company-wide process improvements. Exploring new ideas with dedicated 10% time and monthly AI Fridays . ? What we're looking for: 5+ years' experience as a software engineer, including JavaScript/React and backend development. Proven experience delivering features in agile, fast-paced environments (start-ups/scale-ups a plus). A strong eye for design and user experience. Proactive, adaptable, and excited by the energy of working in a growing company. Excellent communication skills and a collaborative mindset. ? Bonus points if you have: Experience with Ruby or AWS/serverless environments. Interest in solving user problems using AI-driven solutions . What's on offer: Up to £110,000 + benefits. Fully remote, flexible hours - fit work around your life. A culture of ownership, creativity, and experimentation. Growth opportunities - this is the perfect place if you see yourself shaping your own startup in the future.
Sep 22, 2025
Full time
Senior Full-Stack Product Engineer Remote Working Up to £110,000 + Benefits Are you a passionate full-stack engineer who thrives in building end-to-end features that users love? We're partnering with a fast-growing, fully remote tech company on a mission to empower product teams to deliver world-class user experiences - and they're looking for a Senior Full-Stack Product Engineer to join their ambitious team. Why this role? Join a remote-first company where flexibility is at the heart of how they work. Be part of a close-knit engineering team (10 engineers in a 50-person company) where your work has a direct impact on tens of thousands of weekly users. Take full ownership of features, from concept to release, and feel the pride when users love what you've built. Shape not just the product, but also team processes, culture, and the company's future growth. ? What you'll be doing: Owning features from start to finish - collaborating with designers and PMs, building, testing, and releasing. Developing across the stack: React on the front end, Rails on the back end, with AWS infrastructure. Ensuring every feature is polished with strong attention to UX and quality. Getting involved beyond traditional engineering: support queries, product roadmap discussions, and company-wide process improvements. Exploring new ideas with dedicated 10% time and monthly AI Fridays . ? What we're looking for: 5+ years' experience as a software engineer, including JavaScript/React and backend development. Proven experience delivering features in agile, fast-paced environments (start-ups/scale-ups a plus). A strong eye for design and user experience. Proactive, adaptable, and excited by the energy of working in a growing company. Excellent communication skills and a collaborative mindset. ? Bonus points if you have: Experience with Ruby or AWS/serverless environments. Interest in solving user problems using AI-driven solutions . What's on offer: Up to £110,000 + benefits. Fully remote, flexible hours - fit work around your life. A culture of ownership, creativity, and experimentation. Growth opportunities - this is the perfect place if you see yourself shaping your own startup in the future.
