Remote – UK / Europe (GMT to GMT+2)
Full-time | Early-stage VC-backed startup
up to £120,000 P/A
We’re hiring a Senior Backend Engineer to join a fast-growing, VC-backed startup building developer-facing AI infrastructure.
This is not a typical “CRUD API” role.
You’ll be building and owning the backend foundations behind AI-powered systems used by real users in production — APIs, distributed services, async workflows, data pipelines, and infrastructure that needs to scale reliably.
What You’ll Work On
- Designing and building production-grade APIs used by external developers
- Owning backend services that support AI agents and large data workflows
- Handling async processing, queues, caching, and traffic spikes
- Building systems that process complex or heavy data payloads
- Collaborating closely with Product & Design in a small, high-autonomy team
- Making pragmatic architectural decisions in a fast-moving environment
What We’re Looking For
- Strong experience building and scaling backend systems in production
- Deep knowledge of Node.js / TypeScript
Experience with:
- Distributed systems
- Async workflows
- Event-driven architecture
- Caching strategies
- Experience working in VC-backed startups or small product teams
- Comfortable operating with high autonomy and minimal process
- Strong communication skills in async, remote environments
Nice to Have
- Experience building AI-powered backend systems (LLMs, RAG, agents)
- Experience designing APIs used by other engineers
- Exposure to self-hosted or enterprise deployment models
Not the Right Fit If
- Your experience is primarily frontend-focused
- Most of your background is ecommerce, digital agencies, or enterprise-only environments
- You prefer highly structured orgs with strict roadmaps and layers of management
What You’ll Get
- Competitive salary + meaningful equity
- 35 days holiday (including local holidays)
- Remote-first culture
- High ownership and real impact
- Direct collaboration with founders
- Opportunity to shape backend architecture from the ground up
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