Senior TypeScript Developer

Basic-Fit; Tilburg; On-site; EUR 52,000 - 74,000; Full time

Benefits offered by this job

Travel reimbursement

Bike plan

Health insurance discount

Home-working allowance

Pension plan

Gym access

Job summary

Basic-Fit in Tilburg is hiring a Senior TypeScript Developer. You will shape how the team works, focus on backend while stepping into frontend when needed, and work with a cross-functional team.

You'll build APIs that scale to millions of requests, define SLIs, own non-functional topics like security and performance, and help adopt AI in development. The role offers a competitive gross salary and benefits, and you join a 6-country growing tech effort.

Qualifications

• Demonstrated experience with at least part of our tech stack and willingness to share knowledge.
• Ability to manage risk and take ownership.
• Thrives in a fast-moving environment with minimal rituals.
• Eager to explore AI tooling in the development process.
• Eligible to work in the Netherlands (no new sponsorship).

Responsibilities

• Building and maintaining APIs that handle millions of requests without breaking a sweat.
• Defining Service Level Objectives for the APIs and systems in our platform.
• Driving structural improvements to work towards those objectives.
• Jumping into frontend code when a feature, bug, or architectural decision calls for it.
• Supporting teams with documentation, architectural design, and tackling complex bugs.
• Co-shaping the long-term engineering roadmap — you have a real say in what we invest in.
• Co-owning non-functional topics like security, privacy, and performance.
• Being a key driver in how we adopt AI in our development process (no prior experience needed — just curiosity and enthusiasm).

Skills

Problem solving

Collaboration

Ownership

Fast-moving environment

AI tooling curiosity

Tools

React

TypeScript

Nest.js

Postgres

Prisma

Redis

Next.js

Playwright

Heroku

Azure DevOps

GitHub Copilot

Job description

Do you get excited about building softwarethatscales tomillions of users? Are you the kind of Developer

who doesn't just fix problems — but reshapes the way a team works? And does the idea of your code directlyimpactingthe fitness experience of4.7 million membersacross Europe sound like your kind of challenge? Then keep reading.

At Basic-Fit, technologyisn'ta support function —it'show we grow. Our clubs run 24/7 thanks to the software and hardware we build in-house, and our members manage everything from freezing their membership to tracking their workouts through our app. That means what you build truly matters — at scale, across 6 countries, every single day.

Your Role

As a Senior TypeScript Developer,you'renot just shipping features off a roadmap.You'rea pivotal engineer who shapes how the team works, raises the bar on quality, and helps define our long-term engineering direction.Your center of gravity is the backend, but you're just as comfortable stepping into frontend code when the problem calls for it. You'll be working in Tilburg alongside a talented mix of engineers, Product Owners, Designers, Delivery Leads and even a Talent Coach dedicated to your personal growth.

Your Tasks

• Building andmaintainingAPIs that handle millions of requests without breaking a sweat
• Defining Service Level Objectives for the APIs and systemsinour platform
• Driving structural improvements to work towards those objectives
• Jumping into frontend code when a feature, bug, or architectural decision calls for it — you're not fenced off from the client side
• Supporting teams with documentation, architectural design, and tackling complex bugs
• Co-shaping the long-term engineering roadmap — you have a real say in what we invest in
• Co-owning non-functional topics like security, privacy, and performance
• Being a key driver in how we adopt AI in our development process (no prior experience needed — just curiosity and enthusiasm)

Your tech stack:

We build our applications with React, TypeScript, Tailwind, Storybook, Service Workers, Next.js and Playwright. Our APIs run on Nest.js, TypeScript, Prisma, Postgres, Redis, AzureEventGridand AzureServiceBus. To keep everything running, we use Heroku, Azure DevOps, New Relic,Akamaiand GitHub Copilot.

Who are you?

You'rea problem solver at heart, with software as your weapon of choice. You understand that making real impact requires collaboration —you'renot afraid to knock on doors to get things done. Scale and complexitydon'tintimidate you; they motivate you.

• Hasdemonstratedexperience with at least part of our tech stack and loves sharing that knowledge
• Understands how to manage risk andisn'tshy about taking ownership
• Thrives in a fast-moving environment where unnecessary rituals are kept to a minimum
• Is eager to explore AI tooling in the development process
• Is eligible to work in the Netherlands (wedon'tsponsor new work visas, but existing sponsorships can be transferred)

What do we offer you?

At Basic-Fit,it'snot just about work —it'sabout your growth. As a Senior Backend Developer, you'llhave the freedom to make an impact and develop yourself in a dynamic, tech-forward environment.

What You Can Expect From Us

• You will be working in an awesome office in the Plan-T building next to Tilburg Central Station.
• Training & development: Unlimited access to GoodHabitz and LinkedIn Learning.
• Career opportunities: Plenty of room for growth, both professionally and personally.
• Enjoyment at work: An informal, international, and down-to-earth working atmosphere. Because we value collaboration, we work four days a week in the office and one day from home.
• Innovation: Your ideas contribute to strategic projects that are directly visible to millions of members.
• Salary: A gross monthly salary between €4.650 and €6.650 based on 40 hours, depending on your experience and background.
• Secondary benefits: Travel expense reimbursement, bicycle plan, health insurance discount, home-working allowance, and pension scheme (52% premium paid by Basic-Fit).
• Sport: Access to our gym at head office.

About Basic-Fit

Basic-Fit is the European leader in the value-for-money fitness market, with more than 4.7 million members in 1,650+ clubs across 6 countries. We continue to grow and constantly improve. Are you looking for a place where you can make an impact and enjoy your work? Then you've come to the right place with us!

• Working with impact: What you do makes a difference. We work not only for, but with our members, partners, and teams.
• Collaboration: Everyone works together to achieve goals and celebrate successes.
• Diversity and inclusion: Everyone is welcome in our work environment.

Questions? Feel free to contact Yara at [e-mail].