Founding Software Engineer (AI Agents)

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london, United Kingdom Job Category:

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2 Posted:

22.08.2025 Expiry Date:

06.10.2025 col-wide Job Description:

(AI Agents, LLMs, Full-Stack, TypeScript/Python) A VC-backed, fast-growing AI company (Series A, £20M raised) is now building a new R&D-style engineering team to move faster, ship cutting-edge features, and explore next-generation AI agent products. They’re now looking to hire a

Founding Engineer/Full Stack Engineer

to help push the boundaries of what's possible with LLMs, AI agents and intelligent systems. This is a rare opportunity to work directly with commercial teams and technical founders, contribute to a well-funded product with real users, and help shape the future of how AI agents support real-world businesses. Key Responsibilities: Full-Stack Development: Work across the stack with TypeScript, React, Next.js, and Python/Java to deliver rapid iterations of new features. You’ll build, test, and deploy agentic tools that make an impact from day one. Prototype & Ship Fast: This is not a long-roadmap environment, you’ll be expected to move quickly, solve problems independently, and get working code into users’ hands. You’ll experiment, build, and repeat. LLM Integration: Use tools like OpenAI, LangChain, and other frameworks to bring natural language interfaces to life. A genuine interest in this space is a must, alongside working to develop AI agents. You’ll be comfortable figuring things out as you go, navigating fast-changing priorities, and working in a team where initiative and curiosity are valued more than rigid processes. Product & Stakeholder Partnership: Work closely with product managers to gather, scope, and understand client requirements. You’ll be commercially minded and focused on delivering tools that make a measurable impact. What They’re Looking For: Solid experience in a full-stack environment, ideally 3+ years Demonstrated ability to partner with product teams to deliver user-focused features and scope client requirements Experience in experimental design and rapid prototyping across multiple product Previous experience in LLMs, AI agents, or NLP tools A commercially aware mindset with an interest in building tools that solve real-world business problems Excellent communicator, especially in remote-first settings No formal education requirement, they're especially interested in people who are clearly passionate about this space (active in the tech community, building in public, etc.) Why Join? Be part of an early-stage Labs team working on the bleeding edge of AI Help shape and build next-gen AI agent products from the ground up Work remotely, with occasional team hackathons Join a small, highly technical team that loves what they do Ship meaningful products at pace, with full autonomy This role is ideal for creative, ambitious engineers who care about outcomes and want to build things that actually get used. If you're excited by AI, love learning, and want to move fast, you’ll fit right in.

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Location:
London
Salary:
£150,000 - £200,000
Category:
IT & Technology

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