Senior Software Engineer Unity Runtime / XR PlatformsSenior Software Engineer Unity Runtime / XR Platforms This range is provided by Principle. Your actual pay will be based on your skills and experience talk with your recruiter to learn more.

Interested in this role You can find all the relevant information in the description below. Base pay range Direct message the job poster from Principle Technology & Engineering Division Senior Advisor Were hiring a Senior Software Engineer (contract) to join a team working on next-gen immersive platform experiences think runtime engine, asset pipelines, and performance tooling for large-scale 3D environments. You'll be part of a crew who work behind the scenes: the folks who make sure real-time 3D worlds run smoothly, load correctly, and dont fall over. This is not a game dev or content creation role its core engineering. The Offer: Annual Salary up to 140,000 doe and location 6-month contract - inside IR35 - PAYE - paid on a weekly basis 3 Days onsite - Hybrid work model - offices based in Central London What you'll do: Tackle system reliability issues across a complex Unity/C#/C++ stack Build tools and diagnostics to improve performance and stability Work on the runtime engine powering multiplayer, spatial transitions, and real-time rendering Collaborate with global engineering teams and ship code at scale What we're looking for: 10+ years engineering experience system/product generalist mindset Deep hands-on experience with Unity (C#) in non-game contexts Solid C++ and Windows dev experience Proven work on runtime engines, performance tooling, or infrastructure for 3D apps Strong debugging, profiling, and CI/CD knowledge Bonus: Familiar with VR/AR platforms, build systems (Buck, Bazel), and large-scale codebases Were keeping it lean if you know your way around real-time 3D platforms and have shipped complex systems at scale, I want to hear from you. Apply Now with your CV for more information. Som | som@principlehr.com Seniority level Seniority levelMid-Senior level Employment type Employment typeContract Job function Job functionInformation Technology, Product Management, and Consulting IndustriesTechnology, Information and Media, Software Development, and Information Services Referrals increase your chances of interviewing at Principle by 2x Sign in to set job alerts for Software Engineer roles. London, England, United Kingdom 2 weeks ago London, England, United Kingdom 1 month ago London, England, United Kingdom 4 days ago London, England, United Kingdom 1 day ago London, England, United Kingdom 9 hours ago Graduate Software Engineer 2025 - Platform London, England, United Kingdom 22 hours ago London, England, United Kingdom 1 week ago London, England, United Kingdom 2 weeks ago London, England, United Kingdom 1 month ago London, England, United Kingdom 1 month ago London, England, United Kingdom 1 year ago London, England, United Kingdom 1 month ago London, England, United Kingdom 1 week ago London, England, United Kingdom 2 months ago London, England, United Kingdom 1 week ago London, England, United Kingdom $140,000.00-$180,000.00 1 month ago London, England, United Kingdom 1 week ago London, England, United Kingdom 1 month ago London, England, United Kingdom 5 months ago London, England, United Kingdom 8 months ago London, England, United Kingdom 1 month ago London, England, United Kingdom 5 days ago Graduate Software Engineer 2025 - RegTech London, England, United Kingdom 3 weeks ago London, England, United Kingdom 1 week ago London, England, United Kingdom 6 days ago London, England, United Kingdom 1 week ago React Frontend Engineer - grok.com & API (London) London, England, United Kingdom 19 hours ago London, England, United Kingdom 2 days ago London, England, United Kingdom 2 hours ago London, England, United Kingdom 2 weeks ago London, England, United Kingdom 1 month ago Were unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.

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