CalistFitness
Software Engineering Internship (100% Remote) – (React Native + Django)
CalistFitnessNetherlands4 days ago
InternshipRemote FriendlyEngineering, Information Technology

Location: Remote (anywhere)

Type: Unpaid Internship – open to both curriculum-based and side internships

Duration: ~3 months (flexible with possibility of an extension)

Start: ASAP



💡 About CalisFitness


We’re building a new fitness coaching app that helps trainers manage clients, design programs, and track progress, all in one place, faster with the help of automations (and possibly AI where needed) while keeping the coach in control.


We’re building with React Native (Expo), Django/Python backend, and PostgreSQL. We also use AI-assisted tools like GitHub Copilot and GPT to accelerate development.


You’ll be working on a real-world startup project, learning how to ship production-grade code with the latest tools — and your contributions will actually make it into the app used by real clients.



🛠️ What You’ll Work On


You’ll join a small international remote team of interns, each focusing on a project area with technical guidance and peer collaboration. Possible projects include:

• 🏋️ Training Plans – Building components to let coaches design and deliver training programs.

• 🍽️ Nutrition Plans – Adding features for meal planning, food tracking, and healthy habit support.

• 🎥 Media Integration –Create a service enabling clients to share workout or meal content securely with their coach.

• ✅ Check-ins & Progress – Build a form builder, review inbox, progress graphs, and a photo comparison tool.

• 🔒 Privacy & Sync – Adding client controls for privacy, secure data handling, and syncing across devices.


🎯 What You’ll Gain

Hands-on mentorship from founder with technical & fitness domain expertise (software engineer + fitness coach).

• Hands-on experience with modern stack: React Native (Expo), Django/Python backend, MongoDB/Postgres, REST APIs.

• Learn how AI developer tools (GitHub Copilot, GPT) fit into real-world workflows.

Real portfolio project – you’ll ship features that recruiters and future employers can actually see.

• A CV boost + reference letter when you finish.

• Flexible, supportive, fully remote environment.

• Access to a GitHub Copilot Business license, also usable for your personal projects.



👩‍💻 Who We’re Looking For

Computer Science students or self-taught devs with some experience in this coding stack.

• Comfortable with TypeScript (React or React Native is a plus).

• Interested in mobile apps and/or backend (Python/Django).

• Familiar with Git/GitHub workflows.

• Passion for fitness/health apps is a plus but not required.

• Looking for either curriculum credit or an extra side project internship.



📩 How to Apply


Send us:

• Your CV or LinkedIn profile.

• A short cover letter on your interests (Frontend, Backend, or Fullstack).

• Whether this internship should be part of your curriculum or just on the side.


Apply directly on LinkedIn or email us at [email protected].



  • One posting, multiple interns: We’ll select several students from this ad and assign projects based on skills & interests.

Key Skills

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