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About the Role

Unity's Web platform enables games and real-time 3D content to run in a browser on any internet-connected device. This role involves owning significant parts of the runtime, focusing on deep technical challenges like multi-threading, build size reduction, and rapid loading, rather than website development. You will collaborate with experienced engineers and contribute to the advancement of browser technology.

Responsibilities

Own meaningful areas of the Unity Web runtime, from design through to release
Research, design and implement optimizations to the Web build target
Improve download size, load and startup performance for Web builds, and set measurable targets
Solve uncommon, low-level problems across C++, C# and JavaScript
Partner with teams across Unity who build on the Web platform, translating their needs 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

Requirements

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
Sufficient knowledge of English to have professional verbal and written exchanges

Skills

C++
WebAssembly
Emscripten
LLVM
C#
JavaScript
Profiling
Debugging
Optimization

Location

United Kingdom
Finland
Lithuania

Work Type

Full-time

Experience Level

Senior

Salary/Compensations

United Kingdom Zone A: £55,700 - £83,500 GBP gross
United Kingdom Zone B: £63,700 - £95,500 GBP gross
Finland Zone A: €62,700 - €94,100 EUR gross
Lithuania Zone A: €54,200 - €81,400 EUR gross

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
Equity awards
Participation in company incentive plans (such as annual discretionary bonuses or sales commissions)

About the Company

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 www.unity.com.

Equal Opportunity

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.