Stage - Software Engineer Flutter F/M

WE ARE BETCLIC 

Betclic, European leader in sports betting, is much more than just an online gaming site! Also offering Poker, Horse Racing, and Casino games across various countries and continents, it is an inspiring and forward-thinking company: every day brings new challenges in a modern and dynamic environment. As an influential player in the tech industry, with strong and sustained growth over the years, we believe in innovation through diversity and inclusion and encourage everyone to reach their full potential. With our multicultural team, we provide an optimal, safe and responsible gaming experience, powered by cutting-edge technology. 

An internship at Betclic means stepping straight into the game.
At Betclic, trainees don't sit on the sidelines. 

From day one, you'll be involved in impactful projects, working alongside experienced teams who will help you grow quickly.
Throughout your journey, you'll take part in events, meetups and initiatives designed to connect the talents of tomorrow with our teams.
And because we truly believe in the potential of the people who join us, some Trainees choose to continue their journey with Betclic after their internship.

WHY JOIN US? 

 
At Betclic, success comes from passionate and committed teams. Here's why you'll love working with us: 

An international and creative environment where every project is an opportunity to innovate 

Hypergrowth that brings new challenges and development opportunities every day 

A healthy work-life balance: flexible remote work and workplace well-being are essential pillars for us.

A unique and friendly atmosphere, with 1,600 employees across 5 countries and our headquarters in Bordeaux 

Are you passionate about sports and tech? Join us and help shape the future of online gaming!

ENTER THE GAME 

Our Flutter application, deployed across iOS, Android, macOS, and Windows in several European countries, represents cutting-edge cross-platform technology meeting high performance and security requirements. As part of our front team, your mission will be to contribute to the evolution of our multi-platform poker application built with clean architecture principles. You will join an agile team composed of back-end and front-end developers working on a sophisticated monorepo architecture.

YOUR ROLE WITHIN BETCLIC 

As part of your internship, you will contribute to the following missions:

• Participate in the technical design and performance optimization of high-traffic, multi-platform mobile applications
• Contribute to the development of new features within a modular, feature-based architecture (lobby, table, profile, cashier, etc.)
• Take part in building and maintaining our internal design system (Flush DSM), based on reusable component composition
• Support code quality improvements through unit testing and widget testing
• Learn and contribute to clean architecture principles (data, domain, and presentation layers separation)
• Explore and implement platform-specific optimizations and development tooling
• Assist in maintaining the monorepo structure and managing inter-package dependencies
• Document implemented features and technical decisions

TECHNICAL ENVIRONMENT

* Framework : Flutter 3.44+, Dart 3.11+ with null safety

* Architecture : Clean Architecture, feature-driven development, Melos monorepo (white-label: brand × regulation × universe)

* State Management : Riverpod V3 with code generation and dependency injection

* Navigation : AutoRoute with type-safe routing and code generation

* Networking : Dio with cache interceptors, gRPC

* UI/UX: Custom design system (Widgetbook catalogue), Rive animations, responsive and platform-adaptive UI

* Code Generation: build_runner, freezed, json_serializable, riverpod_generator

* Testing : Flutter test, Mockito, widget tests, Given/When/Then (Givn), golden tests (Alchemist)

* B uild & CI/CD : GitHub Actions, Fastlane, mise, automated deployment pipelines, SonarQube

* Multi-platform : iOS, Android, macOS, Windows

* Monitoring: Sentry, Firebase Crashlytics, Datadog APM, tracking-plan-driven analytics

WHO WE ARE LOOKING FOR 

We are looking for passionate and curious professionals who bring kindness and a touch of enthusiasm!

This internship is for you if:

• You have at least one experience in Flutter/Mobile development
• You are proficient in  Dart  and modern Flutter development practices
• You have significant experience with  large-scale Flutter applications  and complex state management
• You master  clean architecture principles  and dependency injection patterns
• You know how to write  testable code  and are proficient in Flutter testing (unit, widget, integration)
• You have experience with  Riverpod  (preferably V2) and reactive programming concepts
• You have a sensitivity to  performance optimization  and understand platform-specific constraints
• You have knowledge of  code generation  tools (build_runner, freezed) and monorepo management
• You understand  multi-platform development  challenges and platform-adaptive design
• You are fluent in  English

Bonus points if you have:

• Experience with  GoRouter and other routing frameworks  and advanced navigation patterns
• Knowledge of  Rive animations  and complex UI interactions
• Experience with  monorepo architectures  (Melos, multi-package dependencies)
• Understanding of  CI/CD pipelines  for Flutter apps
• Experience with  native Android/iOS development  for custom implementations
• Knowledge of  game development  or real-time applications
• Experience with  design systems  and atomic design principles

WHAT ARE THE RECRUITMENT STEPS

If your application is shortlisted, Maxime will contact you within a week for an initial HR screening (30 minutes).

Then, you will complete the AssessFirst test (personality, motivation and cognitive reasoning).

About two weeks later, you will either take a technical test with one of our Technology experts.

Next, you will meet your future Engineering Manager, followed by the Head of Engineering. 

Finally, Maxime will conduct a final HR interview to review your AssessFirst results together. 

The recruitment process usually takes between 4 to 6 weeks to ensure an optimal experience for you. 

WHAT CAN YOU EXPECT

A Ticket Restaurant® card credited with €11 per day (€6 per day funded by Betclic) 

50% reimbursement of public transport costs or an annual sustainable mobility allowance (€230 for commuting with sustainable transport) 

Hybrid work model 

Extraordinary office spaces with a rooftop where you can enjoy sunny breaks with a view of the Cité du Vin 

Internal events to liven up your daily life 

On-site sports classes and organized tournaments (Pilates, circuit training, boxing, yoga, futsal, padel, tennis…) 

6-month internship, available from J anuary 2027 in Bordeaux. 

Betclic Group – 117 Quai de Bacalan, 33300 BORDEAUX

All our positions are open to people with disabilities.