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Software Engineer, Web Platform


Job Location:

London - UK

Monthly Salary: £ 49000 - 73600
Posted: 21 August 2026 (15 hours ago)
Application Deadline: 18 November 2026
Vacancies: 1 Vacancy

Job Summary

The opportunity


We are hiring for a Software Engineer to join our Web Platform team here at Unity. Unitys Web platform lets games and real-time 3D content run in a browser on any internet connected device. Browsers have advanced enormously in the last few years browser gaming is going through a revival and the Unity Web runtime is the technology that 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.

You will help maintain and extend the Unity Web runtime alongside engineers who have spent their careers in this space including people who helped invent the browser technology we build on. This is not website development. We embed Unity inside the browser and work close to the metal across C C# and JavaScript. You will have real opportunity to grow to learn from experienced teammates and to see your work reach developers all over the world.


What youll be doing

  • Maintain and extend the 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 your work with your 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 you learn back to the team


What were looking for

  • 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/verbal communication within a distributed multi-functional team
  • A forward thinker who perseveres on low-level problems that take time to unpick


You might also have

  • Exposure to WebAssembly Emscripten LLVM or WebGL
  • Experience with real-time 3D or game engines
  • Familiarity with code size optimization or compression techniques

United Kingdom Base Salary Range: We determine the base salary range for this role based on your primary work location:
Zone A: 42900 - 64300 GBP gross
Zone B: 49000 - 73600 GBP gross

Finland Base Salary Range: We determine the base salary range for this role based on your primary work location:
Zone A: 51800 - 77600 EUR gross

Lithuania Base Salary Range: We determine the base salary range for this role based on your primary work location:
Zone A: 41800 - 62600 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 candidates relevant experience professional background and skill set.


Benefits


At Unity we want our team members to thrive. We offer a wide range of benefits designed to support well-being and work-life balance.


Please note: Benefits eligibility specific offerings and coverage vary based on the country and employment status.


While specific benefits vary here are some of the ways we strive to take care of our eligible team members globally: 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 worlds 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 position requires the incumbent to have a sufficient knowledge of English to have professional verbal and written exchanges in this language since the performance of the duties related to this position requires frequent and regular communication with colleagues and partners located worldwide and whose common language is English.

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.


Headhunters and recruitment agencies may not submit resumes/CVs through this website or directly to managers. Unity does not accept unsolicited headhunter and agency resumes. Unity will not pay fees to any third-party agency or company that does not have a signed agreement with Unity.

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Required Experience:

IC