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# Senior Fullstack Engineer

- **Company:** TRACT
- **Location:** Amsterdam, Netherlands (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** BigQuery, Python (Programming Language), PostgreSQL, TypeScript, Trunk-based Development, ReactJS, Fastapi
- **Published:** August 12, 2026
- **Apply:** https://www.adzuna.nl/details/5833604640

## About the Role

* You've got 7+ years in industry, at least 3 in a senior role, and a strong foundation in system design as well as writing software.
 * You're proficient in Python and React with TypeScript, and comfortable with FastAPI, PostgreSQL, and BigQuery.
 * You write clearly. Specs, RFCs, review comments, decision logs
 * You're a rigorous reviewer. You read the whole diff, you ask what should be removed, and you're direct about problems .
 * You're already working with AI coding tools and have opinions about where they help and where they quietly create debt.
 * You take end-to-end ownership: design, implementation, deployment, and monitoring.
 * You're motivated by purpose-driven work. What we're building affects how the food and agriculture industry measures its own impact.

## Description

As a Senior Full Stack Engineer at TRACT, you'll build our insights platform using spec-driven development. In practice that means the specification comes before the code: you write it, the team reviews it, and an agent implements against it. Your name is on both the spec and the commit.

This changes where your time goes. Less of it on typing implementation, more on requirements, system design, acceptance criteria, and review. We don't ship code we don't understand.

You'll work across the stack (Python, FastAPI, PostgreSQL, BigQuery, React with TypeScript) on trunk-based development behind feature flags. On significant initiatives you may step into the Lead Engineer role - shepherding an RFC or tech spec, aligning the team, acting as the point of contact for Product and Design.


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