Senior Full Stack Software Engineer

Senior Full Stack Software Engineer (TypeScript, React, Next.js, AI, AWS) | Up to £95,000 + Equity | London HybridI'm partnered with a high-growth deep-tech scale-up spun out of Imperial College London that's helping accelerate the future of electrification. Backed by leading investors, they've built a battery software platform already used by global automotive, aviation, and industrial customers, with a Series A on the horizon and ambitious growth plans.They're now looking for a Senior Full Stack Software Engineer to take ownership of their production SaaS platform, build the next generation of AI-powered capabilities, and work directly with the founders to shape both the product and engineering function as the business scales.The RoleOwn a production, multi-tenant SaaS platform used by enterprise customers.Design, build and scale full-stack applications using TypeScript, React, Next.js, Go, Python and AWS.Build AI-powered features, LLM integrations, agentic workflows and automation tools.Work directly with founders to influence product strategy, engineering direction and future hiring.Develop cloud-native systems using AWS Serverless, Lambda, PostgreSQL, Supabase and modern API architectures.Improve platform reliability, observability, security, performance and scalability.Support CI/CD, Infrastructure as Code and software engineering best practices.Tech StackTypeScript, React, Next.js, Node.js, Go, Python, AWS, Lambda, PostgreSQL, SQL, Supabase, API Development, AI, Machine Learning, LLMs, OpenAI, Claude, MCP, RAG, Serverless, CI/CD, Infrastructure as CodeWhat They're Looking ForStrong commercial experience as a Software Engineer, Full Stack Engineer, Full Stack Developer or Senior Software Engineer.Expertise with TypeScript, React, Next.js and modern web application development.Experience building and operating cloud platforms using AWS.Strong SQL, PostgreSQL and database design experience.Demonstrable experience delivering production software products.Experience building AI features using LLM APIs, prompt engineering, agentic workflows or AI tooling.Comfortable operating in a fast-moving startup or scale-up environment.Nice To HaveNode.js and Go experience.Experience with Supabase and Vercel.RAG, MCP, AI Agents, Evaluation Frameworks and AI Product Development.Python, Pandas and data tooling experience.Startup, scale-up or founding engineer experience.Interest in ClimateTech, EnergyTech, Scientific Software or Battery Technology.Senior Full Stack Software Engineer (TypeScript, React, Next.js, AI, AWS) | Up to £95,000 + Equity | London Hybrid