Senior Software Engineer - Ruby
Legend is hiring a Senior Software Engineer reporting directly to our Senior Engineering Manager. This is an opportunity to shape the technical foundation of a high-growth product in the competitive gaming space - a market scaling rapidly worldwide. You’ll help design and implement the backend and platform architecture that powers real-time tournaments, delivering scalable, secure, and high-performing systems players rely on. You’ll collaborate closely with engineers, product managers, and designers to deliver high-quality solutions while applying modern practices like Domain-Driven Design, SOLID, and GRASP. If you thrive in fast-paced environments, enjoy tackling tough scaling challenges, and want to shape the future of competitive gaming, this is your chance to make your mark.
- Design and implement application architecture that is scalable, maintainable, observable, and high-performing.
- Write clean, efficient, and well-documented Ruby/JavaScript (or other backend language) code.
- Conduct code reviews, review architecture, and contribute to engineering best practices.
- Identify and optimise performance bottlenecks across systems.
- Collaborate closely with cross-functional teams to deliver impactful features.
- Ensure application security, implementing safeguards against vulnerabilities.
- Proven experience delivering large-scale systems in production.
- Strong grounding in Domain-Driven Design, API-first architecture, and software design patterns.
- Proficiency in JavaScript (React/Next) or another backend language, with knowledge of Ruby.
- Experience with Pub/Sub, websockets, and Server-Sent Events (SSE).
- A strong product engineering mindset - able to translate requirements into technical designs and ship features end-to-end.
- Starting salary from 3000 EUR per month.
- Super smart colleagues to work alongside and learn from, with company-wide team-building events twice a year, including great entertainment, catering, and accommodation in a beautiful hotel.
- Engaging development opportunities at all levels.
- Tailored flexibility for your work-life balance.
- Exciting global Legend events, where we unite in person to ignite our shared passion and unveil the exciting strategies for the year ahead!
- Unlock your full potential by joining the Legend team.
- To support you on this journey, we provide an extensive array of benefits and perks, as outlined in our global offerings above.
- For country specific benefits please reach out to your talent partner.
Legend is the company behind more than 25 sports and gaming brands, focused on player experience across betting and gaming. It operates with a global team of over 800 people across 10 hubs worldwide, building and growing its portfolio of brands. The company describes its approach as driven by data, creativity and collaboration, summarised in its "Mindset, Vision, Performance" formula. Headquartered in St Helier, Jersey, Legend operates hubs across Europe and North America. In 2026 Genius Sports announced a definitive agreement to acquire the company.
