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# Senior App Developer

- **Company:** Basic-Fit
- **Location:** Tilburg, Netherlands (Remote available)
- **Experience:** Expert
- **Salary:** €4,650.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Microsoft Azure, Mobile Application Software, PostgreSQL, Node.Js, Prism (Software), Redis, Akamai, Next.js, TypeScript, Tailwind, GitHub Copilot, ReactJS, Servicebus, Heroku, Playwright, React Native, NestJS, New Relic (SaaS)
- **Published:** September 19, 2026
- **Apply:** https://basicfit.wd103.myworkdayjobs.com/BasicFit_Career_Site_NL/job/Basic-Fit-HQ-NL-Tilburg/Senior-App-Developer_R55977

## About the Role

You're a problem solver at heart, with software as your weapon of choice. You understand that making real impact requires collaboration - you're not afraid to knock on doors to get things done. Scale and complexity don't intimidate you; they motivate you.

Additionally, we're looking for someone who:

 * 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)

## Description

As a Senior App Developer, you're not just shipping features off a roadmap. You're a pivotal engineer who shapes how the team works, raises the bar on quality, and helps define our long-term engineering direction. You'll be working in Tilburg alongside a talented mix of React (Native) developers, Node.js developers, Product Owners, Designers - and even a Talent Coach dedicated to your personal growth.

Your tasks:

 * 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, Azure EventGrid and Azure ServiceBus. To keep everything running, we use Heroku, Azure DevOps, New Relic, Akamai and GitHub Copilot.


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