Senior React Engineer

New Today

Overview

At FitXR, we’re building the future of fitness – immersive workouts that turn movement into play, not punishment. We’re for the misfits: those 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.

What you’ll do

  • Lead the tech side of features from brainstorm to release – balancing speed, polish, and player joy
  • Be the go‑to React expert – setting best practices, performance tuning, and helping us build smarter, not harder
  • Team up with Designers, Product and Unity/Backend Engineers to make VR interfaces feel seamless and alive
  • Help define how we build – bringing product thinking and technical insight to every sprint
  • Share knowledge, raising the overall level of code craft and collaboration
  • Push the limits of our React‑Unity integration to unlock richer player experiences

Qualifications

  • Strong React experience in production environments
  • Proven ability to own projects end‑to‑end, balancing delivery speed with solid engineering principles
  • Experience working in small, cross‑functional teams
  • Excellent communication – you keep people in the loop, surface blockers early, and stay cool in chaos
  • Comfort with ambiguity – you can build clarity where none exists
  • Curiosity about 3D, gaming, or VR – bonus if you’ve built something weird and fun before
  • Perspective of AI as a teammate, not a threat – you’re leveraging AI to speed up your workflow, generate tests and prototype ideas faster

Nice‑to‑have

  • Some Unity or VR development – professional or hobby
  • Backend development – C# preferred
  • Automated testing pipelines

You shouldn’t apply if

  • You want a 200‑page spec before you start coding
  • You prefer working in a giant org where decisions move slower than patch notes
  • You’re allergic to collaboration or ownership

Benefits

  • Unlimited paid leave policy
  • Flexible 40‑hour working week (core 10am – 4.30pm)
  • £800 per year learning budget and more when you need it
  • £900 per year wellbeing budget with the option to sacrifice some for additional private health insurance through Vitality
  • £400 home office setup budget for a comfy chair, new desk or other accessories
  • A Meta Quest 3 to get you immersed in FitXR and the wider VR ecosystem
  • Work from anywhere scheme to combine work and travel
  • 12 weeks fully‑paid family leave entitled to everyone, irrespective of gender or sexual identity, from day one

About FitXR

FitXR is a fitness technology company working at the cutting edge of VR and MR, building movement for movement. We started in 2016 in a garden shed in the UK and today we’re one of the top‑downloaded apps on the Meta Quest store. We’ve raised close to $30 million from top investors such as Maveron, Hiro, and BoostVC. Our studios range from box workouts with world‑class trainers like Olympian Nicola Adams to immersive Zumba dance classes. Our team is distributed across Europe and the US, guided by our Principles of Play – four core beliefs about how we treat each other and our community.

FitXR has been featured in Forbes, Empire, T3, Washington Post, Men’s Health, GQ and more, and has been rated one of the top 10 most promising startups, #2 in Flexa’s most flexible VR startups, and #28 in Tempo’s top 100 super startups to work for.

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Location:
United Kingdom
Salary:
£100,000 - £125,000
Job Type:
FullTime
Category:
IT & Technology