Founding Engineer

What you’ll do

• Work across product, infrastructure, integrations, desktop apps and AI systems
• Build AI router and proxy and attribution infrastructure
• Contribute broadly as a founding engineer at an early-stage team

What they’re looking for

• Experience working in an early-stage startup
• Comfortable with pace, ambiguity and ownership

Skills

• TypeScript: TypeScript
• React: React
• Postgres: Postgres
• AI platforms: Claude, ChatGPT, Cursor, Copilot, internal agents
• Desktop apps: macOS, Windows, native apps

The post

Flowstate (London, UK) — Founding Engineer — TypeScript / React / Postgres / AI

Flowstate (https://www.flowstate.inc) is building infrastructure for the emerging human + AI workforce.

Companies are rapidly adopting Claude, ChatGPT, Cursor, Copilot and internal agents, but most still have very little idea what that AI is actually doing, what it costs, what work it contributes to or whether it is making the organisation better.

We’re building the systems underneath that: an AI router and proxy, native macOS and Windows apps, attribution infrastructure that connects AI activity back to work and tools for understanding how humans and AI should operate together inside a company.

We’re a small early-stage team and this is a genuinely broad founding engineering role. You’ll work across product, infrastructure, integrations, desktop apps, AI systems and whatever else needs building. We’re looking for someone who has worked in an early-stage startup before and actually enjoys the pace, ambiguity and ownership that comes with it.

Details: - Location: London, UK - Working style: Hybrid, with regular time together in the office - Salary: £100k–£120k - Equity: 0.5%–1.5% - Benefits: Gym membership, breakfast and flexible hours - Role: Full-time

Apply: https://www.flowstate.inc/careers/