SDE Intern

Company: MAVR
Role: Software Development Engineer (SDE) Intern
Type: Internship
Work Mode: Remote / Flexible
Compensation: Unpaid Internship
Duration: 3 months
Industry: Fitness Technology / SaaS / Health & Fitness Ecosystem

About MAVR

MAVR is building a connected technology ecosystem for the fitness industry across trainers, athletes, and gyms.

Our ecosystem includes:

MAVR Trainer — a Career, Coaching, Business & Growth OS for fitness professionals.

MAVR Athlete — a connected fitness experience that brings workouts, progress, trainers, and fitness history together.

MAVR Gym — a Growth & Operations OS helping gyms manage their business while improving acquisition, retention, and revenue.

We are currently building the early product and technology foundation and are looking for an SDE Intern who wants to contribute directly to building real software products at an early-stage startup.

About the Role

We are looking for a Software Development Engineer (SDE) Intern who can help us build, improve, and scale MAVR's technology products.

This is not only a coding internship.

You will work across:

Product development
Backend and API development
Frontend development
Database design and integration
Third-party services and APIs
Testing and debugging
Performance and reliability
Internal tools and product infrastructure

You will work closely with the founders, product team, designers, and other developers.

You will have the opportunity to contribute to features that are intended for real users rather than working only on practice projects.

What You'll Work On
Software Development
Build and maintain features across MAVR's web and mobile ecosystem.
Convert product requirements and designs into functional software.
Develop clean, readable, maintainable, and reusable code.
Work on both new features and improvements to existing functionality.
Participate in the complete development lifecycle from idea to deployment.
Frontend Development

Depending on your skill set, you may work on:

Responsive web interfaces.
Dashboards and admin panels.
Trainer, athlete, and gym experiences.
Authentication and onboarding flows.
Profiles and account management.
Workout and progress experiences.
Data visualization and analytics.
Client and business management tools.
Reusable UI components.
API integrations.
Backend Development

You may also work on:

REST APIs and backend services.
Authentication and authorization.
Database design and queries.
User and profile management.
Workout and fitness data.
Trainer-client relationships.
Gym and business data.
Notifications and integrations.
Business logic and application services.
API performance and reliability.
Database & Integrations

You will get exposure to:

Designing and working with databases.
Creating efficient queries.
Connecting frontend applications with backend APIs.
Integrating third-party APIs and services.
Handling application data securely.
Understanding data relationships across trainers, athletes, and gyms.
Testing & Debugging
Identify and fix bugs.
Write and maintain tests where appropriate.
Debug frontend and backend issues.
Test APIs and application flows.
Improve application reliability.
Investigate performance and usability issues.
Engineering Practices
Use Git and version control effectively.
Participate in code reviews.
Follow reasonable coding standards and development practices.
Learn how production software is structured and maintained.
Document important technical decisions and implementations.
Work with developers to solve technical problems efficiently.
Engineering Mindset

We expect you to think beyond:

"How do I write this code?"

What We're Looking For

You should have:

Basic-to-strong understanding of programming fundamentals.
Understanding of data structures and algorithms.
Experience with at least one programming language such as JavaScript, TypeScript, Python, Java, C++, or similar.
Basic understanding of web development.
Understanding of APIs and client-server architecture.
Basic understanding of databases and SQL or NoSQL concepts.
Familiarity with Git and GitHub.
Ability to debug and troubleshoot problems.
Ability to read and understand existing code.
Ability to learn new technologies quickly.
Strong problem-solving skills.
Ability to work independently.
Ability to communicate technical ideas clearly.
Willingness to take feedback and iterate quickly.
Preferred Skills

Depending on your interests, experience with any of the following will be valuable:

You do not need to know everything listed above.

We care more about your ability to understand problems, write good code, learn quickly, and take ownership.

What We Don't Want

We are not looking for someone who:

Only follows tutorials without understanding the underlying concepts.
Copies code without understanding how it works.
Needs detailed instructions for every small development decision.
Focuses only on making something work without considering maintainability.
Avoids debugging or investigating problems independently.
Treats coding as only writing syntax.
Is unwilling to learn technologies outside their current comfort zone.

We want someone who can understand:

the problem → the user → the product → the technical approach → the implementation → the result.

What You'll Gain

You will get the opportunity to:

Work directly on a real early-stage product.
Build software intended for actual trainers, athletes, and gyms.
Work closely with founders, designers, and developers.
Contribute to real product decisions.
Understand how software products are built inside a startup.
Work across frontend, backend, APIs, databases, and product infrastructure.
Learn how to take a feature from an idea to implementation.
Build meaningful projects for your technical portfolio.
Gain experience with Git, APIs, databases, deployment, debugging, and production development.
Participate in technical and product discussions rather than only receiving isolated coding tasks.
Understand startup engineering trade-offs and product development.
Potentially grow into a larger engineering role with MAVR as the company expands, based on performance and business requirements.
Internship Structure

This is currently an unpaid internship.

We are therefore looking for someone primarily interested in gaining hands-on startup engineering experience, building meaningful products, learning through real development work, and taking ownership of technical tasks.

Candidates should apply only if they are comfortable with the unpaid nature of the internship.

The internship is expected to be 3 months, with the possibility of a larger role depending on performance, contribution, and business requirements.

Ideal Candidate

This role would particularly suit:

Computer Science / IT / Engineering students.
Recent graduates.
Self-taught developers.
Full-stack developers at an early stage of their career.
Developers building their first serious portfolio.
Students who have built personal or college projects.
Developers interested in startups.
Engineers who want more ownership than a traditional internship provides.
Developers interested in SaaS, fitness technology, health-tech, or consumer technology.
How We Evaluate Candidates

We care about what you have built, not only your academic background.

Projects, GitHub repositories, hackathons, freelance work, college projects, open-source contributions, or personal products are all valuable.

During the selection process, we may evaluate:

Programming fundamentals.
Problem-solving ability.
Understanding of your projects.
Code quality and reasoning.
Ability to learn.
Communication.
Ownership and initiative.
Technical curiosity.