Founding Engineer

Founding Engineer YC-Backed London £80,000 - £120,000

We're working with a YC-backed startup in London that's just closed a multimillion-pound seed round. They're building the AI platform that's transforming high-stakes litigation for top US law firms.

Top UK and US law firms use their platform to handle high-stakes litigation faster - automating tasks that used to take lawyers hours, now done in seconds with AI

You'll work closely with their technical co-founders with deep domain expertise. Their users are lawyers who trust them with million-pound disputes. Security, accuracy, and speed aren't negotiable.

They're hiring their first engineer. A true founding team member who wants to build, ship, and own.

What you'll do:

Full-stack work across Python backend, Next.js frontend, PostgreSQL, LLMs, and Azure infrastructure. You'll talk directly to customers (major law firms), understand what they need, then build it. You'll own features end-to-end.

The work: document processing pipelines at scale. Multi-step AI agents handling complex legal workflows. Search systems that work across massive case files. UX designed for how lawyers actually work.

There are plenty of feature requests from top-tier firms. You'll help decide what to build and ship it fast.

This is for you if:

• You're a builder with high urgency who ships fast and iterates
• You're comfortable owning problems from customer conversation to production deploy
• You can work full-stack (Python + Node.js) but probably lean backend-heavy
• You're excited about AI and tackling hard, real-world problems
• You have strong product judgment and love working directly with users
• Bonus: you've shipped LLM features to production

Why join:

Legal is about to be transformed by AI. You'll be at the heart of it as a founding engineer at a well-funded, fast-moving startup working with household-name law firms.

Real ownership. Meaningful equity. The chance to shape the product, engineering culture, and hire the team around you.

Details:

London (3-4 days/week in office near Bank)

£80-120K + equity

Backing: Y Combinator + top-tier investors

Interested? Get in touch - I'd love to tell you more and make an intro.