Flowstate

Founding Engineer

London, UK Full-time Hybrid

Job Description

Flowstate ( 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

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Frequently Asked Questions

What does the Founding Engineer role at Flowstate involve?

The Founding Engineer position at Flowstate in London, UK is a full-time role. Flowstate ( 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.

What skills are required for Founding Engineer at Flowstate?

Key skills for this role include: TypeScript, React, Postgres, AI.

What is the salary for Founding Engineer at Flowstate?

The salary for this position is not publicly listed. You can negotiate during the interview process. Check Glassdoor or Levels.fyi for estimates.

Is the Founding Engineer position at Flowstate remote or on-site?

This position is Hybrid. Expect a combination of office and remote work, typically based in London, UK.

How do I apply for Founding Engineer at Flowstate?

You can apply for this position directly through the employer's careers page. Click the 'Apply Now' button on this page to be redirected to the original listing. Make sure your resume is ATS-optimized. Use SpotChange's free ATS test to check.

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About This Role

Founding Engineer at Flowstate is a full-time engineering position in London, UK. Key skills include TypeScript, React, Postgres, AI. Education: Master's Degree preferred. Experience: 3+ years.

This role is classified as hybrid and is suitable for mid level-level professionals. Ghost Score 30/100 (Probably Active) indicates this listing is probably active with recent employer engagement.

To apply, visit the official application page through the Apply Now button above. SpotChange Jobs provides AI-powered career tools including resume optimization, ATS testing, interview preparation, and salary negotiation assistance.