Full-Stack Engineer (£80k-£200k+ + Equity) at Solveintelligence

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers. She will pick the best candidates from Jack's network. The next step is to speak to Jack. Job Title Full-Stack Engineer (Back-End Leaning) Salary £80k-£200k+ + Equity Company Description Solveintelligence.com is a $55M-funded London AI startup backed by Y Combinator and Microsoft, building generative AI for the $200B+ patent industry with 8-figure ARR. Job Description Join an elite founding team to architect the core backend infrastructure powering a high-growth AI platform. You will build scalable APIs, database architectures, and integrations that enable legal professionals worldwide to automate complex patent workflows. This is a high-intensity, in-person role for builders who want to ship foundational systems at a rocketship company. Location London, UK Why this role is remarkable Join a "top 0.01% talent" environment led by PhD founders from Cambridge and UCL with deep AI expertise. Exceptional traction with 8-figure ARR and 20-30% month-over-month growth serving 400+ global IP teams. Backed by tier-1 investors including Y Combinator, 20VC, Microsoft, and the founders of Stripe, Perplexity, and Hugging Face. What You Will Do Architect and scale the core Python backend, managing PostgreSQL databases and high-performance API infrastructure. Design and implement secure, production-ready integrations for complex document editing and AI-powered patent drafting. Collaborate directly with the founding team to make foundational technical decisions and ship features daily. The ideal candidate Expert Python developer with a proven track record of building and scaling production-grade backend systems. Demonstrated intellectual "horsepower" through top-tier academics, competitive programming, or significant technical achievements. A true builder mentality with the drive to thrive in a high-intensity, in-person startup environment in London. Who are Jack & Jill? Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support. And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate. How does this work? Jack's an AI agent for job searching and career coaching. He works for you. Jill is the AI recruiter working for the company. She recruits from Jack's network. If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives. We never post fake jobs This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network. Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description. We appreciate this can make them look a bit suspect, but there isn't much we can do about it. Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.