Senior App Developer

Basic Fit International B.V.; Tilburg; On-site; EUR 52,000 - 74,000; Full time

Benefits offered by this job

Travel expense reimbursement

Bicycle plan

Health insurance discount

Home-working allowance

Pension scheme

Job summary

Basic-Fit International B.V. is seeking a hands-on Mobile Engineer to build scalable apps that reach millions of members across Europe. You will own the mobile architecture, collaborate with product and design, and ensure stable iOS/Android releases while mentoring teammates.

Our stack includes React Native, TypeScript, Tailwind, Storybook, Nest.js, Prisma, Postgres, Redis, and cloud tools. We offer four days in the office and one day from home in Tilburg, with travel perks and a pension plan.

Qualifications

• Experience with at least part of our tech stack and a collaborative mindset.
• Willingness to own mobile architecture and scale applications.
• Ability to improve release processes and maintain stability.

Responsibilities

• Collaborate with Product and Design to build high-quality mobile experiences.
• Own mobile application architecture to keep it scalable and maintainable.
• Improve release processes for stable iOS and Android releases.
• Monitor and improve app performance, stability, and crashes.
• Stay updated with React Native/mobile trends and apply them thoughtfully.
• Mentor other developers and share mobile best practices.

Skills

React Native

TypeScript

Tailwind

Storybook

Playwright

Mobile architecture

Mentoring

Tools

Nest.js

Prisma

Postgres

Redis

AzureEventGrid

AzureServiceBus

Heroku

Azure DevOps

New Relic

Akamai

GitHub Copilot

Job description

Do you get excited about building software that scales to millions of users? Are you the kind of engineer who doesn't just fix problems — but reshapes the way a team works? And does the idea of your code directly impacting the fitness experience of 4.7 million members across Europe sound like your kind of challenge? Then keep reading. At Basic-Fit, technology isn't a support function — it's how 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

• Working closely with Product and Design to build high-quality mobile experiences
• Taking ownership of the mobile application architecture and keeping the app scalable and maintainable
• Constantly improving the release process and ensuring stable iOS and Android releases
• Monitoring and improving app performance, stability, and crash rates
• Keeping up with the React Native/mobile ecosystem and constantly evaluating recent trends while scoping them to Basic-Fit context
• Mentoring other developers and sharing (mobile) best practices

Your tech stack:

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

Who are you?

• Has demonstrated experience with at least part of our tech stack and loves sharing that knowledge
• Understands how to manage risk and isn't shy 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 (we don't sponsor new work visas, but existing sponsorships can be transferred)

What do we offer you?

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! What makes us unique? 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.

Contact

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

Diversity and inclusion: Everyone is welcome in our work environment.

Welcome to the Orange Family.