Product Engineer (Backend) | UK / EU

High-Impact Backend Role | AI-Native Legal Platform

• Remote (GMT-5 to GMT+1 overlap) UK & EU Only | Optional hubs: London / New York
• Full-time | Mid–Senior
• £100,000 – £200,000 + meaningful equity
• Our client — AI-native LegalTech company
• Travel: London every 5–6 weeks

Work Authorization

• Must be eligible to work in the UK, EU
• No visa sponsorship currently specified
• Must be able to travel to London every 5–6 weeks

About the Opportunity

Our client is rebuilding legal services from the ground up. Backed by $9M+ from a tier-1 US VC , the team is creating a Cursor-like environment where lawyers collaborate with AI agents on real legal work.

You will join a small, high-caliber engineering team growing from 2 to 5 , with direct ownership over systems used daily by real lawyers.

This is a product-first backend role where reliability, safety, and extensibility are mission-critical.

What You'll Build

• Core product APIs powering matters, documents, chats, and permissions
• Scalable data models supporting evolving agent workflows
• Agent-facing backend primitives enabling safe autonomous actions
• Production infrastructure focused on reliability and observability
• Systems that remain auditable, reversible, and correct in real legal workflows

Tech Environment

• Python (core backend language)
• Postgres (primary datastore)
• Cloud infrastructure (GCP preferred)
• API-first product architecture
• AI-assisted engineering workflows

What They're Looking For

• Strong production experience with Python backend systems
• Proven API and data model design capability
• Experience translating product goals into reliable backend architecture
• Track record of owning systems end-to-end in fast environments
• Comfortable working remotely with required time zone overlap

Nice to Have

• Experience building products from zero to one or early-stage startup experience
• Experience with Postgres at scale
• Exposure to Temporal or background job systems
• Familiarity with GCP environments
• Background in collaborative or workflow-heavy SaaS

Why This Role Stands Out

• Meaningful equity in a well-funded early-stage company
• Unlimited budget for AI coding tools
• Real product ownership from day one
• Annual Mallorca offsite + regular team gatherings
• Tight feedback loop with real legal users

Early-stage, real users, real ownership — if you build backend systems that must work flawlessly in production, we'd love to meet you...