Senior Full-Stack Software Engineer London, England (Hybrid) – Permanent. Salary: £100,000 – £120,000. Our client is a newly launched, VC‑backed tech business operating in a highly traditional professional services sector. Founded by repeat founders with a track record of building and scaling high‑growth, category‑leading consumer businesses, they are using AI and automation to fundamentally reimagine how services in their space are delivered. The opportunity This is a rare greenfield engineering role at a genuinely early‑stage business. The successful candidate will join a small, senior founding team and take real ownership of the technical foundation from day one — building the stack, setting the architecture, and establishing the patterns that everything else will be built upon. The role spans customer‑facing product, backend automation, AI agent orchestration and internal tooling — with significant scope to grow as the business scales. What you'll be doing

Building the customer‑facing platform from the ground up — timelines, task‑based views and embedded AI assistance Owning backend automation workflows, AI agent orchestration and data pipelines Building internal tooling to support the team in reviewing and approving AI‑generated work Setting engineering patterns and architecture that future hires will build on

What they are looking for

5+ years building modern web applications with a strong backend emphasis Strong command of React/Next.js and Python/TypeScript Experience with AI agent orchestration frameworks (e.g. LangGraph, OpenAI Agent SDK) The architectural judgment to make confident decisions on a fast‑moving, greenfield stack A background in high‑growth, VC‑backed startups — you thrive in fast, dynamic environments London‑based with existing right to work in the UK (visa sponsorship not available)

Why this role

A true ground‑floor opportunity at a well‑funded, early‑stage business disrupting a traditional sector Founding team with a proven track record — previously built one of the UK’s fastest‑growing consumer brands Backed by respected VC funds with a recent funding round closed Real ownership and influence over product and architecture from day one Work at the cutting edge of AI and automation in a sector ripe for disruption

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