Senior Fullstack Engineer

TRACT; Amsterdam; Hybrid; EUR 110,000 - 135,000; Full time

Benefits offered by this job

Hybrid work model

Competitive compensation package

SARs program

Company pension

Learning and development budget

Lunch & learns

Office near Sloterdijk Station

Job summary

TRACT is seeking a Senior Full Stack Engineer to build our insights platform with spec-driven development. You’ll write the specification first, get it reviewed, and see it implemented against it. Your name appears on both the spec and the commit.

You’ll work across Python, FastAPI, PostgreSQL, BigQuery, and React with TypeScript, using trunk-based development behind feature flags. Occasionally you’ll step into Lead Engineer to align RFCs and coordinate Product/Design.

Qualifications

• 7+ years in industry, 3+ in a senior role, strong foundation in system design.
• 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 who reads the whole diff and flags problems.
• You're already working with AI coding tools and have opinions about their impact.

Responsibilities

• Take end-to-end ownership: design, implementation, deployment and monitoring.
• Lead RFCs or tech specs on significant initiatives, aligning the team.
• Work across the stack (Python, FastAPI, PostgreSQL, BigQuery, React TS) with feature flags.
• Mentor and review, ensure code is understood before shipping.

Skills

System design

End-to-end ownership

Technical writing

RFCs and specs

Tools

Python

React (TypeScript)

FastAPI

PostgreSQL

BigQuery

Job description

Senior Fullstack Engineer

TRACT BV—Amsterdam, Netherlands

At TRACT, we are building a more sustainable and resilient food and agriculture industry. Our mission? To remove the burden of data management and resolve the debate onmethodologyso companies can drive impact. With our SaaS platform, we empower organizations to focus their resources on making a real impact while driving positive change in the industry.

About the Team

We are a diverse and passionate team of about 40, committed to creating a sustainable impact and technological innovation. We believe in the power of collaboration and leverage our collective expertise to tackle complex challenges and drive meaningful change. Our cultural heartbeat & business decisions are shaped by our core values: ‘Accept the challenge’, ‘Commit to learn’, ‘Authentic & accountable’, ‘Make momentum’, & ‘Simplify & ship.’ These ensure that every team member can thrive and make a difference.

About the Job

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.

About You

• 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.

What We Offer

• A unique opportunity to work on a fast-growing platform that enables our customers to create a positive impact in Ag & Food sustainability
• Full ownership and autonomy in your work, with encouragement for development beyond your area of expertise
• Close collaboration in a team of +- 40 highly diverse, motivated, and talented colleagues
• Competitive compensation package
• Employee participation plan (SARs)
• Company pension
• 25 paid holidays + 2 diversity days + public holidays
• Swapping 3 Dutch public holidays for other recognized festive days
• Hybrid working: 3 days minimum in-office to foster company culture and high impact collaboration
• Commuting allowance: 0.25 cents per km (tax-free), capped at 20 km single commute
• Remote working: 2 weeks per year
• Laptop & home-office equipment
• Learning and development budget
• Above statutory leave for maternity, paternity, adoption & other life events
• Frequent lunch & learns, including sharing our many different food cultures
• Office located within walking distance from Sloterdijk Station in Amsterdam

Are you interested to ‘Accept the challenge’? Join us at TRACT to make a positive impact!