Senior Networking Engineer

The opportunity
The team that brought Unity to visionOS and enabled real-time interaction via Play-to-Device is growing in preparation for something even more ambitious: adapting PolySpatial to stream Unity content into other game engines and 3D environmentsin-process cross-process and over the network.

Were looking for engineers eager to help us invent how different real-time 3D runtimes communicate and render under real-world constraints. Youll work at the intersection of core engine tech high-performance networking distributed systems and graphics. This is your opportunity to build the fundamental infrastructure for the next generation of interconnected game and 3D ecosystems.

Youll architect and implement a networking stack to synchronize game state between distinct engines. This goes beyond standard multiplayer replication: it requires new authority models replication strategies and rollback/prediction schemes that work when client and server run on different engines. If you thrive on architecting multiplayer systems from first principles then optimizing every byte and packet to make it performant this role offers the scope and complexity youre looking for.

What youll be doing

• Design and build networking systems to stream Unity simulation state to external hosts while balancing bandwidth latency convergence and visual consistency.
• Invent new synchronization models from first principles designed to mitigate latency including engine-agnostic interpolation/prediction/rollback and distributed authority models.
• Optimize bandwidth through bit-level serialization delta-compression and message dispatch schemes
• Diagnose and fix end-to-end desyncs race conditions and jitter when two engines disagree about reality under real-world network conditions

What were looking for

• Networking Mastery: Transport layers reliability topology design serialization and realtime synchronization (generalized prediction rollback and interpolation) for high-performance games.
• Engine-Level Netcode: Track record shipping scalable multiplayer systems for latency-sensitive games (FPS action MMO or similar). You havent just used a networking libraryyouve written or heavily extended one
• Distributed systems experience: Large-scale systems (MMORPGs cloud gaming simulations) where synchronization and determinism matter
• Low-Level Fluency: Strong C and C# skills. Comfortable capturing raw packets to diagnose timing issues or optimize at the bit level

You might also have

• Fluency with diverse networking models (authoritative server deterministic lockstep peer-to-peer)
• Background with cloud game servers containerization and orchestration (GCP AWS Azure).
• Experience in network security encryption or cheat prevention.
• Exposure to Unity DOTS or similar high-performance data-oriented frameworks

Additional information

• Relocation support is not available for this position
• Work visa/immigration sponsorship is not available for this position

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
We offer a wide range of benefits designed to support employees well-being and work-life balance. You can read more about them on our career page.

Unity NYSE: U is the leading platform to create and grow games and interactive experiences. Creators ranging from game developers to artists architects automotive designers infrastructure experts filmmakers and more use Unity to bring their imaginations to life across multiple platforms from mobile PC and console to spatial computing.

As of the third quarter of 2024 more than 70% of the top 1000 mobile games were made with Unity and in 2024 Made with Unity applications had an average of 3.7 billion downloads per month. For more information please visit Unity.

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Pursuant to the San Francisco Fair Chance Ordinance we will consider for employment qualified applicants with arrest and conviction records.

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.

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Required Experience:

Senior IC