Senior Software Engineer, Web Platform

The opportunity We are hiring for a Senior Software Engineer to join our Web Platform team here at Unity. Unity's Web platform lets games and real-time 3D content run in a browser, on any internet connected device. Browser capability has moved fast, browser gaming is going through a revival, and the Unity Web runtime is what makes it possible. Our work also supports an exciting new partnership with a major platform, which puts what this team builds in front of audiences at a scale few browser platforms reach. In this role, you will own meaningful areas of the runtime outright. This is not website development. We embed Unity inside the browser, and the problems are the deep ones: making a single-threaded platform multi-threaded, cutting megabytes out of a build, getting a game playable in seconds rather than minutes. You will work alongside engineers who helped invent the browser technology we build on, and you will help the people around you grow.

What you'll be doing

• Own meaningful areas of the Unity Web runtime, from design through to release
• Research, design and implement optimizations to the Web build target, such as stripping unused code from builds and progressively loading assets as a game needs them
• Improve download size, load and startup performance for Web builds, and set measurable targets for it
• Solve uncommon, low-level problems across C++, C# and JavaScript, for example bringing multi-threading to parts of the runtime that are single-threaded today
• Partner with teams across Unity who build on the Web platform, translating what they need into platform work
• Mentor teammates and help set the bar for code quality across the team
• Keep Unity at the frontier of the Web's constantly evolving capabilities

What we're looking for

• Deep, hands-on proficiency with C++ in performance sensitive code
• Development experience with WebAssembly, using Emscripten and/or LLVM
• Ability to decompose complex technical problems and complete them on your own technical judgment
• Experience profiling, debugging and optimizing across the native and browser boundary
• Working knowledge of C# and JavaScript
• Effective written/verbal communication with peers, managers and key decision makers in other teams
• A proven track record of mentoring engineers and raising code quality standards
• You might also have
• Experience contributing to a browser engine or browser runtime
• Deeper domain knowledge of rendering, physics or audio in a real-time 3D engine
• Familiarity with compression methodologies and build size reduction

United Kingdom Base Salary Range: We determine the base salary range for this role based on your primary work location: Zone A: £55,700 - £83,500 GBP gross Zone B: £63,700 - £95,500 GBP gross

Finland Base Salary Range: We determine the base salary range for this role based on your primary work location: Zone A: €62,700 - €94,100 EUR gross

Lithuania Base Salary Range: We determine the base salary range for this role based on your primary work location: Zone A: €54,200 - €81,400 EUR gross

This range reflects the anticipated base salary for this position. Beyond base salary, this role may be eligible for equity awards and participation in our company incentive plans (such as annual discretionary bonuses or sales commissions). The final offer amount will depend on several factors, including geographic location and the candidate’s relevant experience, professional background, and skill set.

Benefits

• Comprehensive health, life, and disability insurance
• Commute subsidy
• Employee stock ownership
• Competitive retirement/pension plans
• Generous vacation and personal days
• Support for new parents through leave and family-care programs
• Office food snacks
• Mental Health and Wellbeing programs and support
• Employee Resource Groups
• Global Employee Assistance Program
• Training and development programs
• Volunteering and donation matching program

Life at Unity

Unity (NYSE: U) is the world’s leading game engine, powering play for more than 3 billion consumers each month. The top mobile games in the world, the most played PC indie titles, the most innovative console games, and virtually all of the top XR and Web Games are developed, deployed, and grown in Unity. Unity also enables teams across industries like automotive, manufacturing, and healthcare to design, simulate, and collaborate in 3D — closing the gap between ideas and reality. For more information, please visit

Unity is a proud equal opportunity employer. We are committed to fostering an inclusive, innovative environment and celebrate our employees across age, race, color, ancestry, national origin, religion, disability, sex, gender identity or expression, sexual orientation, or any other protected status in accordance with applicable law. Our differences are strengths that enable us to support the growing and evolving needs of our customers, partners, and collaborators.

If you have a disability that means there are preparations or accommodations we can make to help ensure you have a comfortable and positive interview experience, please fill out this form to let us know.

This posting is intended to fill an existing vacancy, and we are committed to providing applicants with updates throughout the hiring process in accordance with applicable law.

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Unity (NYSE: U) is the world’s leading game engine, powering play for more than 3 billion consumers each month. The top mobile games in the world, the most played PC indie titles, the most innovative console games, and virtually all of the top XR and Web Games are developed, deployed, and grown in Unity. Unity also enables teams across industries like automotive, manufacturing, and healthcare to design, simulate, and collaborate in 3D — closing the gap between ideas and reality.

At Unity, we're committed to creating a workplace that fosters collaboration and teamwork that allows you to harness your unique skills. Join us in creating industry tools to help creators of all levels bring their projects to reality. Learn more about our culture and values, and get a head start by reading about how our hiring process works.

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