Senior Engineer

<p>At FitXR, we’re building the future of fitness - immersive workouts which turn movement into play, not punishment. We’re for the misfits: the ones who’ve always felt a little out of place in traditional fitness spaces. This is a new kind of community where movement is inclusive and everyone belongs.</p><p>We’re looking for a Senior Engineer to bring their React expertise into the 3D world and build interactive experiences that make movement genuinely fun. You’ll be joining a small, high-trust and fully remote team who are obsessed with learning fast and helping people move because they want to, not because they should. </p><h5>What you’ll do 👀</h5><ul> <li>Lead the tech side of features from brainstorm to release - balancing speed, polish, and player joy</li> <li>Be the go-to React expert - setting best practices, performance tuning and helping us build smarter, not harder</li> <li>Team up with Designers, Product and Unity/Backend Engineers to make VR interfaces feel seamless and alive </li> <li>Help define how we build - bringing product thinking and technical insight to every sprint</li> <li>Share knowledge, raising the overall level of code craft and collaboration</li> <li>Push the limits of our React–Unity integration to unlock even richer player experiences </li> </ul><h5>You should apply if ✅</h5><p>You’re a proactive, product-minded engineer with:</p><ul> <li>Strong React experience in production environments</li> <li>Proven ability to own projects end-to-end, balancing delivery speed with solid engineering principles</li> <li>Experience working in small, cross-functional teams</li> <li>Excellent communication - you keep people in the loop, surface blockers early, and stay cool in chaos</li> <li>Comfort with ambiguity - you can build clarity where none exists</li> <li>Curiosity about 3D, gaming, or VR - bonus if you’ve built something weird and fun before</li> <li>Perspective of AI as a teammate, not a threat - you’re leveraging AI to speed up your workflow, generate tests and help prototype ideas faster</li> </ul><p>Nice-to-have experience:</p><ul> <li>Some Unity or VR development - professional or hobby!</li> <li>Backend development - C# preferred</li> <li>Automated testing pipelines</li> </ul><h5>You shouldn’t apply if ❌</h5><ul> <li>You want a 200-page spec before you start coding</li> <li>You prefer working in a giant org where decisions move slower than patch notes</li> <li>You’re allergic to collaboration or ownership</li> </ul><h5>Benefits</h5><p>🏝 Unlimited paid leave policy</p><p>⏰ Flexible 40-hour working week (core working hours 10am - 4.30pm)</p><p>🌱 £800 per year learning budget and more when you need it</p><p>🧘 £900 per year wellbeing budget with the option to sacrifice some of this wellbeing budget for a private health insurance scheme through Vitality</p><p>🏡 £400 home office setup budget for things like a comfy chair, new desk, any accessories which make your work environment comfy</p><p>🪐A Meta Quest 3 to get you immersed in FitXR and the wider VR ecosystem</p><p>✈️Work from anywhere scheme to combine work and travel</p><p>👶 12 weeks fully-paid family leave which everyone, irrespective of gender or sexual identity, is entitled to from day one</p>