Senior JavaScript Engineer

About The Role We are looking for a passionate and experienced self-driven Senior JavaScript Engineer to join in on our mission to deliver the greatest igaming experience to our customers. As a part of our multinational frontend team, you would be an important cog in the machinery, creating new features for and maintaining the full product of LeoVegas.com. In close collaboration with product managers, designers and our backend peers, we get to work with a broad variety of initiatives, you will be a key factor delivering features and maintaining our brand. With focus on our so-called RoW (Rest of the world) cluster, you will directly act on markets such as Canada, Germany, Malta and some others, with the possibility to bring your own experience close to the current team, and stakeholders. You Will Be Responsible For Develop and maintain high-quality JavaScript applicationsEnsure a smooth and engaging user experienceYou will be responsible for driving the development of most of the frontend features of Leovegas.comImprove and maintain the applications with a product focusContribute to launching new brands and brand expansions into new territories Essential Skills OUR SUCCESSFUL CANDIDATE WILL HAVE THE FOLLOWING: Strong, proven experience with JavaScript, TypeScript, React, and Next.jsSolid working knowledge of GraphQlPractical experience with Node.js and microservices Nice To Have Experience with tracking and monitoring tools (e.g., Datadog)Familiarity with OpenAPI and BigQueryExperience leveraging AI tools like Claude or GitHub Copilot, alongside a strong curiosity for using AI to elevate engineering practicesCuriosity and enthusiasm for adopting AI to enhance engineering practices and software delivery Who We Are At the core of LeoVegas Group is Team Leo. Our culture is our foundation and is what enables us to innovate, build, and lead as we trailblaze our way through the igaming industry. We’re a team of over 2000 innovators, initiators, and groundbreakers working in a fast-paced and agile environment across 19 offices worldwide. Benefits Hybrid work policy4 weeks of Workation (T&C apply)Benefits package - 800 PLN net (B2B)/gross (UOP) monthly with access to the cafeteria platform (private medical care, insurances, sports card)Training budgetICAS assistance program that can provide help and guidance during challenging moments.Our office provides complimentary snacks and drinks; on Mondays, we serve complimentary breakfast.Team and office social events throughout the yearFree parking for bicycles and motorcyclesFree gym in the buildingEquipment: MacBook Pro + smartphone (iPhone 16/17 or Samsung Galaxy S25) JOIN US! In our pride, we empower our teammates to find their roar and run with their wildest ideas. We don’t wait for things to happen; we pounce and make it happen! Would you be a good fit for the Leo Pride - give us a roar! As our company's working language is English, we’d like to see your CV in English, please.