Software Engineer, Web Platform

Salary: £46,000 - 86,000 per year

Requirements

• Hands-on development experience with C++
• Working familiarity with C# and/or JavaScript
• Curiosity about how browsers work under the hood, rather than about building websites
• Ability to profile, debug and optimize native code
• Effective written and verbal communication within a distributed, multi-functional team
• A forward thinker who perseveres on low-level problems that take time to unpick
• English language skills sufficient for professional verbal and written communication with colleagues and partners worldwide

Responsibilities

• Maintain and extend our Unity Web runtime, contributing features and fixes across the platform
• Help improve the download size, load time and startup performance of Web builds
• Develop, profile, debug and optimize across C++, C# and JavaScript
• Scope work with our manager and teammates, building on established patterns in the codebase
• Investigate and fix issues raised by internal teams and by developers shipping on the Web platform
• Keep pace with the browsers constantly evolving capabilities and bring what we learn back to the team

Technologies

• 3D
• C#
• Support
• JavaScript
• Unity
• Web
• GameDev
• Emscripten
• LLVM
• Mobile
• WebAssembly
• XR

More

We are Unity, the worlds leading game engine, powering play for more than 3 billion consumers each month. Our Web Platform team builds the Unity Web runtime, which lets games and real-time 3D content run in a browser on any internet-connected device. This is not website development; we work close to the metal across C++, C# and JavaScript alongside experienced engineers who have deep browser technology expertise. We support an exciting new partnership with a major platform, and our work reaches developers and audiences at scale. This full-time role is available in Brighton, Helsinki, Vilnius, and remotely in the United Kingdom, Finland, and Lithuania. We offer benefits designed to support well-being and work-life balance, including health, life and disability insurance, commute subsidy, employee stock ownership, retirement and pension plans, generous vacation and personal days, parental and family-care leave, office snacks, mental health and wellbeing programs, employee resource groups, a global employee assistance program, training and development, and volunteering and donation matching. We are an equal opportunity employer committed to an inclusive environment.

last updated 35 week of 2026