Software Engineer, Geometry

About Roblox

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there.

A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone.

The Role: Software Engineer, Geometry

As an Early Career Software Engineer on our Geometry team, you will launch your career alongside top engineers working on foundational algorithms for real-time 3D content creation and editing. You will contribute directly to our core geometry engine, solving novel math computational problems to deliver immersive and expressive creative tools to millions of users on the Roblox platform. We are committed to your growth; you will be mentored by industry experts while working on projects designed to help you take ownership and demonstrate your skills on impactful work.

What You Will Do

• Develop robust and efficient algorithms for convex decomposition and mesh partitioning to support real-time simulation and collision detection.
• Design, code, and test innovative features for our core geometry engine, navigating the full development lifecycle from initial design to production deployment.
• Solve discrete math computational problems related to geometry processing.
• Improve the performance, robustness, and stability of existing geometry components and mesh processing pipelines across all platforms.
• Be mentored by senior engineers and actively engage in architectural discussions and system design for our proprietary, in-house engine.
• Collaborate in a small, autonomous team to drive essential parts of the Roblox experience and ensure the best user experience for our creators.

What You Are

• Possessing or pursuing an undergraduate or graduate degree in Computer Science, Engineering, Mathematics, or a related field with an emphasis on computational geometry, modeling, or simulation.
• Highly proficient in modern C++ with a focus on writing organized, efficient, clear and reusable code.
• Equipped with a strong knowledge of 3D math, including linear algebra (vector and matrix math), numerical solvers, and advanced data structures.
• Familiar with some computational geometry concepts (e.g. related to convex decomposition), real-time graphics, or physics-based simulation.
• Showing demonstrable enthusiasm for coding (e.g. through participation in competitive programming or having personal project code repos involving relevant concepts).
• Able to thrive in dynamic environments, quickly adapting to new challenges.

Key skills/competency

• Computational Geometry
• C++ Programming
• 3D Math
• Linear Algebra
• Mesh Processing
• Algorithm Development
• Real-time Simulation
• Collision Detection
• Data Structures
• Physics Simulation