Staff Software Engineer, Unity

• Extensive experience in systems programming, with deep expertise in C++
• Proven experience building and shipping low-level engine or runtime systems at scale
• Strong understanding of computer architecture, memory hierarchies, cache behavior, and CPU/GPU interaction
• Experience with multithreaded programming
• Familiarity with multiple platforms (Windows, macOS, Linux, consoles, mobile) and their toolchains
• Track record of leading cross-team technical initiatives and influencing engineering direction
• Excellent debugging and profiling skills
• Strong written and verbal communication skills

Desirable

• We're looking for a Staff Engineer to join the Runtime team within the Core Engine group here at Unity
• You'll be responsible for designing, implementing, and maintaining the low-level systems that form the backbone of the Unity runtime
• You'll work across subsystems including transforms, the player loop, the job system, serialization, and support higher level features like physics and netcode
• Your work will directly impact the performance, stability, and capabilities available to millions of developers worldwide
• This is a highly technical individual contributor role with significant influence over architectural decisions and engineering practices
• You'll collaborate closely with teams across rendering, physics, animation, scripting, and platform engineering to ensure the core engine meets the evolving needs of real-time 3D content creation
• This role requires deep expertise in C++ and systems programming, a track record of technical leadership, and the ability to mentor engineers while driving critical initiatives that shape how creators build with Unity
• Design and implement core runtime systems with a focus on performance, memory efficiency, and cross-platform compatibility
• Lead technical initiatives spanning multiple teams, driving alignment on architecture and implementation approaches
• Profile, analyze, and optimize engine performance across diverse hardware targets including consoles, mobile devices, desktop, and emerging platforms
• Mentor and support engineers across the organization, raising the bar for code quality and engineering rigor
• Contribute to technical strategy and roadmap planning for the core engine
• Write clear technical documentation and participate in design reviews
• Debug complex, system-level issues that span multiple subsystems
• Evaluate and integrate new platform capabilities and hardware features