Web Platform Engineer — C++/JS for Real‑Time 3D

Unity; Brighton; On-site; GBP 43,000 - 64,000; Full time

Benefits offered by this job

Health insurance

Stock ownership

Retirement plan

Vacation days

Parental leave

Office snacks

Mental health support

ERGs

Training programs

Volunteer matching

Job summary

Unity is hiring a Software Engineer for the Web Platform team. You will embed Unity inside the browser, work close to the metal across C++, C# and JavaScript, and help deliver the Unity Web runtime to developers worldwide.

This role offers growth, learning from experienced teammates, and exposure to scale across platforms. The team focuses on performance, complexity, and reliability in browser-based Unity runtimes, with opportunities to contribute to next-generation Web deployments and

Qualifications

• Proficient in C++ with practical software experience.
• Experience with C# or JavaScript is a plus.
• Curiosity about browser internals and performance optimization.

Responsibilities

• Maintain and extend the Unity Web runtime and related features.
• Improve download size, load time, and startup performance of Web builds.
• Develop, profile, debug and optimize across C++, C#, and JavaScript.
• Collaborate to scope work and follow established codebase patterns.
• Investigate and fix issues raised by internal teams and external developers.

Skills

C++

C#

JavaScript

Profiling

Debugging

Communication

Low-level

Tools

WebAssembly

Emscripten

LLVM

WebGL

Job description

Unity is hiring a Software Engineer for the Web Platform team. You will embed Unity inside the browser, work close to the metal across C++, C# and JavaScript, and help deliver the Unity Web runtime to developers worldwide.

This role offers growth, learning from experienced teammates, and exposure to scale across platforms. The team focuses on performance, complexity, and reliability in browser-based Unity runtimes, with opportunities to contribute to next-generation Web deployments and