This job listing expired on Nov 24, 2023

The opportunity

Unity reaches the world on the next billion devices, from mobile phones to high-end PCs. We enable creators whether they’re making their indie dream game or the next AAA mega-hit. We need the help of people like you to make our Physics tools and runtime highly performant and scalable!

The Unity Physics team develops and maintains Unity's Physics systems. As a Software Engineer on the Physics Team, you will implement new features. You will iterate on existing features, incorporating feedback from internal and external customers to improve performance, adaptability, and usability. Your work will help Unity users at every stage of their career to get the most out of our tools.

We collaborate with Unity engineering teams around the globe, write C++ in the Unity engine, C# in the scripting layer, and use a handful of additional technologies that come with the platforms that we support — such as PC, Mac, iOS, Android, Web, and consoles. And you will share your work and knowledge with our users through presentations and technical writing.

What you’ll be doing

  • Developing features, workflows or tools as needed for creators to author Physics in Unity

  • Programming the core constraint solvers in Unity Physics

  • Integrating Physics solvers with Unity

  • Optimizing the performance of Unity Physics

What we’re looking for

  • Experience with Havok, PhysX, Bullet or some equivalent

  • A good understanding of rigid-body dynamics, constraint solvers, and collision detection algorithms

  • Prior experience with Unity

  • Released game titles

  • Numerical or Simulation programming experience

You might also have

  • Experience working with DOTS or other ECS systems

  • SIMD optimisation experience

We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation.

Life at Unity

Unity (NYSE: U) is the world’s leading platform for creating and operating real-time 3D (RT3D) content. Creators, ranging from game developers to artists, architects, automotive designers, filmmakers, and others, use Unity to make their imaginations come to life. Unity is the foundation upon which the world’s most powerful digital content is created. Specifically, Unity’s platform provides a comprehensive set of software solutions to create, run and monetize interactive, real-time 2D and 3D content for mobile phones, tablets, PCs, consoles, and augmented and virtual reality devices.

In the fourth quarter of 2022, more than 70% of the top 1000 mobile games were made with Unity as derived from a blended number of the top 1000 games in the Google Play Store and Apple App Store. In 2022, Made with Unity Applications had more than 4 billion downloads per month. 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 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.

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