Senior Mobile App Developer — Scale to Millions of Members

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

Benefits offered by this job

Travel reimbursement

Bicycle plan

Health insurance discount

Home-working allowance

Pension scheme

Gym access

Job summary

Basic-Fit in Tilburg is seeking a Senior App Developer to shape and own the mobile experience for millions of members across Europe. You will define architecture, drive quality, and influence the long-term engineering direction with a strong React Native focus.

You will collaborate with React Native and Node.js teams, contribute to releases, mentor peers, and grow in a fast-moving, international environment that values practical action and continuous improvement.

Qualifications

• 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)

Responsibilities

• 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

Skills

Team mentoring

Ownership

Collaboration

AI tooling

Tools

React Native

TypeScript

Tailwind

Storybook

Service Workers

Next.js

Nest.js

Prisma

Postgres

Redis

AzureEventGrid

AzureServiceBus

Heroku

Azure DevOps

New Relic

Akamai

GitHub Copilot

Job description

Basic-Fit in Tilburg is seeking a Senior App Developer to shape and own the mobile experience for millions of members across Europe. You will define architecture, drive quality, and influence the long-term engineering direction with a strong React Native focus.

You will collaborate with React Native and Node.js teams, contribute to releases, mentor peers, and grow in a fast-moving, international environment that values practical action and continuous improvement.