Engineering · London
Senior / Staff Data Engineer
Own the data layer that makes Flowstate the single source of truth — pipelines, transformations, modelling and the infrastructure beneath it all.
The role
You'll own the data that powers Flowstate — pipelines, transformations, modelling and the infrastructure that ties it all together. You'll work closely with product and engineering to make sure the right data gets to the right place, reliably and at scale.
This is a full-stack-minded role. You'll spend most of your time in the data layer, but you'll be comfortable jumping into TypeScript when needed to wire things up end-to-end.
You'll be based in our central London office, working alongside the founding team. Most of us are in most of the week — we value proximity for the speed it brings to decision-making and collaboration.
The profile
You are commercially minded, technically curious and comfortable with ambiguity. You've worked in startups before and know what it takes to move fast without cutting corners where it counts.
You've worked with data platforms before and understand their intricacies — the joys of schema evolution, the pain of late-arriving data, the art of making messy sources behave.
What you'll bring
- Experience building and maintaining data pipelines in production
- Strong SQL and a solid understanding of data modelling for analytics and application use cases
- Familiarity with Python, BigQuery, Postgres, Redis, TypeScript and Docker
- You've dealt with the realities of production data — schema evolution, late-arriving records, messy sources
- Some exposure to machine learning pipelines or feature engineering
Bonus points
- LLMs (Claude, Gemini) and building data pipelines that feed them
- PyTorch or similar ML frameworks
- Security fundamentals — OWASP, OAuth, SAML
- Integrations with Linear, JIRA or similar
Stack
Open-source-first. Common, portable tools before cloud-native services.
Benefits
- Meaningful early-stage equity
- Salary that reflects your value and removes life stress
- Employer pension contribution
- 25 days holiday + bank holidays
- Private health insurance
- Cycle to work scheme
- Free lunches and gym membership
- Claude Code with unlimited budget
- New MacBook Pro and any tooling you need
About Flowstate
Flowstate is the Workforce Engineering platform. We help organisations measure, optimise and recover the full value of their workforce — human and AI. Every cost attributed to teams, projects and outcomes in real time. Every decision faster.
We're backed by a16z Scout Fund, Ventures Together, Haatch and Openseed. We're a small team of ex-founders who believe the way companies plan and measure the cost of work is about to change completely — and we're building the system that makes it happen.
We don't do sprints or planning cycles. We figure out what needs to happen, plan it, and execute in days not months. No product managers. No layers. Everyone talks to customers. Everyone owns outcomes.