At FDJ UNITED, we don't just follow the game, we reinvent it.
FDJ UNITED is one of Europe’s leading betting and gaming operators, with a vast portfolio of iconic brands and a reputation for technological excellence. With more than 5,000 employees and a presence in around fifteen regulated markets, the Group offers a diversified, responsible range of games, both under exclusive rights and open to competition. We set new standards, proving that entertainment and safety can go hand in hand. Here, you’ll work alongside a team of passionate individuals dedicated to delivering the best and safest entertaining experiences for our customers every day. 
We’re looking for bold people who are eager to succeed and ready to level-up the game. If you thrive on innovation, embrace challenges, and want to make a real impact at all levels, FDJ UNITED is your playing field.
Join us in shaping the future of gaming. Are you ready to LEVEL-UP THE GAME?
We are looking for a Senior Fullstack Developer who enjoys solving complex problems with creative and practical solutions.
You will help design and build integrations that connect our core systems with modern platforms and tools.
Your work will bring ideas from concept to launch and directly improve how our teams and customers interact with our products.
If you like exploring new technology, experimenting with AI, and finding better ways to make systems work together, this is a great place for you.
Build and maintain integrations between our systems and third-party platforms.
Introduce AI and automation into tools and workflows.
Work with engineers, architects, and product owners to deliver new features.
Ensure everything you build is secure, reliable, and easy to maintain.
Take ownership of performance, scalability, and stability.
Help troubleshoot and support production issues when needed (on rotation, with compensation).
Keep learning and share knowledge with your team.
Languages: JavaScript, Node.js (PHP experience is a plus)
Frameworks: React, microservice-based architecture
Platforms: Oracle Service Cloud, LivePerson, Five9
Infrastructure: Kubernetes, Jenkins, ArgoCD, Backstage
Databases: MySQL and Oracle, mainly accessed through APIs
A problem solver who enjoys designing practical, scalable solutions.
Curiosity and adaptability, with the ability to pick up new tools and APIs quickly.
Strong understanding of software design principles and modern web architecture.
A collaborative mindset and a sense of ownership for what you build.
Focus on security, quality, and maintainable code.
Experience across both frontend and backend technologies.
You will work on meaningful projects that combine technology and creativity.
You will have freedom to explore and shape how we build our solutions.
You will collaborate with a supportive and innovative team that values learning.
We offer a flexible work setup and a healthy work-life balance.
Our world is hybrid.
A career is not a sprint. It’s a marathon. One of the perks of joining us is that we value you as a person first. Our hybrid world allows you to focus on your goals and responsibilities and lets you self-organise to improve your deliveries and get the work done in your own way.
We believe talent knows no boundaries. Our hiring process focuses solely on your skills, experience, and potential to contribute to our team. We welcome applicants from all backgrounds and evaluate each candidate based on merit, regardless of personal characteristics as the age, gender, origin, religion, sexual orientation, neurodiversity or disability.