Quell is building the future of fitness gaming. Our players get fit fighting, running, leaping and ducking their way through unforgettable worlds. We give players real resistance, powerful haptics, heart-rate data and real-time motion tracking to create a truly immersive experience. 
The team is made up of passionate superstars from the likes of Square Enix, King, Meta, Paradox, EA, Sony, Nintendo, Microsoft and Disney. We’ve sold $1.5m in pre-orders and raised over $5m in funding from top-tier investors. Now, we’re gearing up for an explosive launch.

YOUR Mission.

Shape the player’s experience in a game blending high-intensity exercise with deep, immersive gameplay. You’ll own features from inception to delivery, working with the design team to refine and execute their vision, with a focus on building robust and maintainable systems.

YOUR Responsibilities.

  • Develop high-quality code in Unity across animation, gameplay, audio, UI and metagame
  • Guarantee quality through a thorough review process, use of unit and integration testing, and following consistent architectural patterns
  • Work on systems and tools to create compelling and immersive gameplay
  • Proactively engage stakeholders to drive efficient decision making
  • Support and mentor team members on engineering best practices
  • Research and champion new techniques to drive the product forward
  • Help build a culture of constant improvement and collaboration

Skills you’ll need.

  • 5+ years of game engineering experience
  • Highly skilled in C# and Unity, with an emphasis on AI, animation, and gameplay
  • Experience of the full product cycle: building tools for designers, pipelines for artists, and visualization tools for gameplay, and setting up automation
  • Experience building scalable software in multi-developer teams
  • Strong 3D math skills

Bonus Points.

  • Experience developing for alternative input devices (VR, Wii, Kinect, PS Move etc)
  • Built or worked on multiplayer experiences in Unity
  • Experience using procedural content generation
  • Familiarity with other languages in our stack: Python, C or C++


  • Equity in a start-up which has increased its value 30X in two years
  • Flexible working hours and holiday
  • Free books! We’ll add anything you like to our library
  • Cycle-to-work programme
  • A team obsessed with building an amazing place to work


  • Design-led. Great products create great businesses, not vice versa.
  • Zero ego. The best idea can come from anyone.
  • Strengths-based. We build superstars by focusing on strengths, not weaknesses


Please email Martin at with your CV and a short cover letter.

We look forward to hearing from you!

Apply Now