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Roblox

Runs a platform where users build and play games

Senior Network Transport Engineer - Network Transport

Systems Software EngineeringConfirmed live in the last 24 hours
Full-timeSan Mateo, CA, USA

About the Job

Requirements

  • At least 7 years of game networking experience from a game engine or game studio.
  • Deep understanding of network stacks and interest in open source.
  • Strong systems-level C++ programming experience, including smart pointers, templates, virtual functions, and structured and raw memory.
  • Experience with Linux networking, quality of service, and congestion control algorithms.
  • Understanding of operating-system-level behavior during code execution.
  • Experience working on a high-performance user-space network stack, addressing scale, performance, latency, and throughput in client/server environments.
  • Experience working on a very large multithreaded distributed system connecting millions of users worldwide.
  • Experience working across supported platforms, including desktop, mobile, and console clients.
  • Experience with a game engine and understanding of how a game engine works.

Responsibilities

  • Work across areas of the game platform to enable real-time communication throughout Roblox.
  • Help deliver game-state communication that makes gameplay feel like a nearly synchronous world.
  • Identify network-exchange timing costs and reduce wasted time.

About the Company

Roblox

Runs a platform where users build and play games

Roblox runs an online platform where people play, chat, and hang out in 3D games built by its users rather than by the company itself. In 2025, Grow a Garden, a game a teenager made on Roblox, set the record for the most people playing one video game at the same time. Creators build games with Roblox Studio, a free design tool, and players join through the free Roblox app on phones, computers, game consoles, and VR headsets. Roblox makes money by selling Robux, a virtual currency players spend on avatar items and in-game extras, and it shares part of that spending with creators, who can exchange their Robux for real money. Roblox was founded in 2004 and is based in San Mateo, California.

Company size
1,001-5,000
Company stage
IPO
Headquarters
San Mateo, CA
Founded
2004

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