Frontend Developer- Experimentation

About Us

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

?
The rol

e:As an Experimentation Front-End Developer, you will be instrumental in building and testing new feature prototypes. You will be responsible for improving and automating the experimentation process by supporting the wider development teams on the overall product roadmap. You will work alongside product developers by creating minimum viable products (MVPs) for A/B testing to enhance user engagement and optimize site performance. This role requires a blend of creativity and technical expertise, as you will be turning ideas into tangible features that can be rapidly tested and iterated upo

n.
What you will

• do:Prototype Development: Code new feature prototypes using HTML, CSS, and JavaScri
• pt.API Integration: Work with various casino and sports APIs to fetch data and integrate it into feature prototyp
• es.A/B Testing: Implement and manage A/B tests to evaluate the effectiveness of new features and iterate based on test resul
• ts.Tracking: Implement tracking mechanisms and collaborate with the data team to measure succe
• ss.Collaboration: Work alongside product managers, designers, and other developers to implement best practices for experimentation and oversee test developmen
• ts.Automation: Identify opportunities to create tools to speed up the experimentation process, utilising GenAI capabilities where possib
• le.Ensure that you adhere to the Governance, Risk & Compliance (GRC) obligations for your ro
• le.Identify and raise any non-compliance incidents promptly to your line manag
• er.Challenge processes, policies and projects that will negatively impact compliance within the Gro
• up.Complete all mandatory compliance training assigned to y
• ou.Reach out to the Compliance Teams if unsure of any of your compliance obligations or the requirements are uncle

ar.
Your experie

• nce:Strong proficiency in HTML, CSS, and JavaScr
• ipt.Familiarity with RESTful APIs and data integrat
• ion.Knowledge of React.js or similar front-end framewo
• rks.Experience with A/B testing tools and methodolog
• ies.Ability to build MVPs and iterate quickly based on feedb
• ack.Experience with any of the experimentation platforms e.g. Optimizely, Growth
• bookExcellent collaboration and communication skills dealing with stakeholders from across the business with varying technical knowle
• dge.Attention to detail to quickly troubleshoot and fix development iss
• ues.Understanding of user experience (UX) princip
• les.Experience in the online gaming or betting industry is a p
• lus.Analytical skills and experience with data tracking implementation is a p
• lus.Bachelor's degree in computer science or related field, or equivalent work experie

nce.

Our Way Of W

orkingOur world is h

ybrid.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 ow

n way.Application P

rocessWe 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 disab