Frontend Engineer
At Casumo we work across our lovingly crafted and award-winning web app and a suite of bespoke tools to support us in building the best player experience through our joint passion and creativity.
- Design and deliver scalable, maintainable frontend features using React and SvelteKit.
- Build fast, responsive, and accessible user interfaces using Tailwind CSS and modern component patterns.
- Develop applications powered by Vite, optimizing build performance and developer experience.
- Integrate frontend applications with backend services and APIs, including edge-powered workflows using Cloudflare Workers.
- Own features end-to-end, from technical design and implementation to deployment and monitoring.
- Write clean, well-tested TypeScript/JavaScript code with strong attention to readability and maintainability.
- Participate actively in code reviews, providing thoughtful feedback and elevating code quality across the team.
- Investigate and resolve complex production issues across frontend and edge environments.
As a Technical Contributor
- Take ownership of significant technical initiatives or product areas.
- Help refine frontend patterns across multiple frameworks (React and SvelteKit).
- Improve and maintain shared UI components and styling conventions using Tailwind.
- Optimize performance across build time, runtime, and edge delivery.
- Contribute to CI/CD workflows using GitHub and modern deployment pipelines.
- Collaborate with backend engineers to shape efficient APIs and edge-compatible architectures.
- Improve developer experience by enhancing local tooling, Vite configs, linting, testing setup, and documentation
- Proven experience building production-grade applications with React and/or SvelteKit.
- Strong proficiency in modern JavaScript and TypeScript.
- Experience using Vite or similar modern build tools.
- Solid experience with Tailwind CSS or utility-first CSS approaches.
- An understanding of client-side rendering, SSR, and edge rendering patterns.
- Experience deploying or integrating applications with edge platforms (e.g.,Cloudflare Workers or similar).
- Experience with Git-based workflows (GitHub), pull requests, and CI/CD pipelines.
- Good knowledge of web performance optimization (Core Web Vitals, bundle size, caching strategies).
- Experience writing automated tests (unit, integration, or e2e).
- Strong communication skills in English and experience working in cross-functional teams.
- Private health insurance
- Wellness incentives, including a fitness allowance and mental well-being services
- Flexible national holidays: public holidays mean more time off, choose how and when to enjoy them!
- 2 weeks Work From Anywhere (10 days), increased to 4 weeks (20 days) after longer duration of employment within the Company: explore the world while working remotely
- Gourmet lunches and healthy snacks prepared by our in-house chef
- Variety of discounts from local vendors
- Access to some of the greatest tools and platforms for developing your professional skills and building success within your role
- A range of training courses, known as Casumo College, for continuous learning and growth
- Social events for building strong relationships with colleagues from all across the organisation
At Casumo, we don’t do “ordinary.” We launched in Sweden in 2012 to shake up the online casino world, and we’ve been colouring outside the lines ever since. Today, we’re live across regulated markets under licences from the MGA, Gibraltar, UK, Sweden, and Spain. We’re bold, but we’re also buttoned-up where it counts. Inside the Umoverse, you’ll find thousands of games, a live casino, a slick sportsbook, daily campaigns (we call them Umodays), live leaderboards (Umoboards), and an award-winning app built to make play fast, fun, and seamless. Behind it all? A team of 45+ nationalities spread across Malta, Gibraltar, North Macedonia, Croatia, Spain, and Serbia - curious minds who thrive on creativity and collaboration. Our vision? To create a trusted, responsible gaming environment that transforms everyday moments into lasting memories.