Product Engineer
Posted 4 days 4 hours ago by Cross Border Talents
£80,000 - £100,000 Annual
Permanent
Full Time
Other
Gloucestershire, Bristol, United Kingdom, BS153
Job Description
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
- Our client - AI-native LegalTech company
- Travel: London every 5-6 weeks
- 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
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
- 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
- Python (core backend language)
- Postgres (primary datastore)
- Cloud infrastructure (GCP preferred)
- 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
- 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
- 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