Senior Fullstack Engineer

TRACTAmsterdam AreaHybridFull-time6 Oct 2026

TRACT is seeking a Senior Fullstack Engineer to build an insights platform using spec-driven development. The role involves working across the stack with Python, FastAPI, PostgreSQL, BigQuery, and React with TypeScript, and requires 7+ years of industry experience with at least 3 years in a senior role. The position is hybrid, based in Amsterdam, and offers a competitive compensation package with various benefits.

What you'll do

Build insights platform using spec-driven development
Write specifications and review them with the team
Work across the stack (Python, FastAPI, PostgreSQL, BigQuery, React with TypeScript)
Participate in trunk-based development behind feature flags
Step into Lead Engineer role on significant initiatives
Shepherd RFCs or tech specs
Align the team and act as point of contact for Product and Design
Take end-to-end ownership: design, implementation, deployment, and monitoring

What you need

Must-have

PythonFastAPIPostgreSQLBigQueryReactTypeScriptSystem DesignAI coding tools

Soft skills

Clear communicationRigorous reviewDirectnessEnd-to-end ownershipPurpose-drivenCollaboration

Fullstack EngineerSeniorData InfrastructureClimate DataSoftware DevelopmentPythonReactTypeScriptHybridAmsterdam

/What you'll do

/What you need

Must-have

Soft skills

What you'll do

What you need