Founding Engineering - Top London Software House

We are looking for an exceptional engineer to join an early-stage technology company as a founding member of the engineering team. This is a rare opportunity for someone who wants genuine technical ownership, working directly with the founding team to build a category-defining product from the ground up. We are not looking for someone who simply writes code. We are looking for a world-class problem solver who can move quickly, think deeply, make high-quality technical decisions and build systems that can scale. About the RoleAs a Founding Engineer, you will have responsibility across the entire technical stack — from architecture and infrastructure through to product development and optimisation. You will operate with a high degree of autonomy, solving difficult engineering problems and establishing the foundations of the company’s technology. This role is best suited to an exceptional individual with outstanding technical ability, intellectual curiosity and a track record of building challenging systems. Key Responsibilities • Architect and build core technology from first principles. • Own critical engineering decisions across infrastructure, backend systems and product development. • Design scalable, reliable and high-performance software systems. • Solve complex technical challenges with speed and precision. • Build prototypes, test ideas and rapidly iterate towards production solutions. • Establish engineering standards, tooling and development practices. • Optimise systems for performance, reliability and scalability. • Work directly with founders to shape product strategy and technical direction. • Take ownership of projects from initial concept through to deployment. About You • Exceptional academic background from a leading UK university. • Degree in Computer Science, Mathematics, Physics, Engineering or another highly technical discipline. • Outstanding programming ability in languages such as Python, C++, Rust, Go or Java. • Demonstrated ability to build complex technical projects independently. • Strong understanding of algorithms, data structures, systems design and software architecture. • High intellectual curiosity and ability to learn unfamiliar technologies quickly. • Comfortable operating with uncertainty and taking full ownership. • Driven by solving difficult problems rather than following established processes. Strong Signals • First-class degree or equivalent academic achievement. • Competitive programming, mathematical competitions or research experience. • Open-source contributions or technically ambitious personal projects. • Experience building products, platforms or infrastructure from scratch. • Experience at high-performing technology companies, research labs or engineering teams. Founding Engineer – Keyword ListFounding Engineer, Software Engineer, Backend Engineer, Full Stack Engineer, Principal Engineer, Senior Software Engineer, Lead Engineer, Technical Lead, Startup Engineer, Early Stage Engineer, Product Engineer, Computer Science, Software Development, Software Architecture, System Design, Distributed Systems, Scalable Systems, High Performance Systems, Backend Development, API Development, Microservices, Cloud Infrastructure, Infrastructure Engineering, Platform Engineering, Algorithms, Data Structures, Object Oriented Programming, Functional Programming, Python, C++, Rust, Go, Java, TypeScript, JavaScript, Database Design, SQL, NoSQL, PostgreSQL, System Architecture, Technical Leadership, Engineering Strategy, Software Reliability, Performance Optimisation, Automation, DevOps, CI/CD, AWS, Azure, Google Cloud, Kubernetes, Docker, Open Source, GitHub, Research Engineering, Machine Learning Engineering, AI Engineering, Deep Learning, Mathematical Modelling, Competitive Programming, Hackathons, Research Projects, Technical Projects, Product Development, MVP Development, Prototyping, Rapid Development, Problem Solving, First Principles Thinking, Innovation, Entrepreneurship, High Growth Technology, Scale-Up, Venture Backed, Engineering Excellence