Product Engineer (AI Start-Up) - Up to £140k + Bonus + Equity

Job Title: Product Engineer (AI Start-Up) - Typescript/React

Client: AI Tech Scale-Up – Backed by Top-Tier Investors, Led by World-Class Engineers

Salary: Up to £140k + Bonus + Equity

Location: London

Sells: Work on cutting-edge AI systems that power innovation at scale led by world class engineers (Competitive programmers, ex HFT, big tech etc.) . Total ownership of greenfield projects, modern tech stack (Typescript/React), and a culture that rewards curiosity, autonomy, and clean engineering.

An AI Tech company is expanding its high-calibre engineering team and looking for Software Engineers who thrive on building elegant, scalable systems from the ground up.

You’ll be joining a small, world-class team working on distributed backend and frontend platforms, data-driven AI tools, and core infrastructure supporting advanced technologies. This is a true software engineering role where you'll be designing, building, and scaling complex systems that solve real problems!

Role

• Design and build production-grade backend systems using Typescript and React
• Develop distributed, high-performance services and APIs for AI-driven platforms
• Contribute to architecture decisions, scalability planning, and system optimisation
• Implement best practices in testing, CI/CD, and performance monitoring
• Collaborate closely with product, AI, and data teams to deliver end-to-end solutions
• Drive continuous improvement and innovation across the engineering organisation

Skills

• 4+ years of experience as a Software Engineer building modern backend systems
• Strong Typescript skills
• Knowledge of system design, data modelling, and distributed architecture
• Understanding of software engineering best practices — testing, CI/CD, clean code
• A genuine interest in AI systems, automation, and applying engineering to real-world impact

Sells

• Chance to shape core architecture in a high-impact Tech environment
• Flat, engineering-led structure with autonomy and trust
• Work on complex, meaningful technical problems that matter
• Strong equity offering and long-term growth opportunities
• Culture built around innovation, ownership, and collaboration