Senior Full-Stack Software Engineer
London (Victoria) - 3 days in office - £100,000 - £120,000 - Permanent
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 we're 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