Senior Network Programmer
Roblox - San Mateo, CA

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ROBLOX is a leading user-generated gaming site that makes players the architects of their own 3D worlds, drawing over one billion page views and 21 million in-game hours each month. The site is ranked #1 in the US for total engagement time within the 8-14 year old segment, and is rapidly growing in popularity amongst players aged 15+. Our vision is to become the leader in user-generated gaming for all ages, around the world. On ROBLOX, players use core building components to create elaborate online games that simulate the real world. Check out our latest news at


We are seeking a highly skilled senior software engineer to join the Game Physics & Network team. If you enjoy building a large scale distributed 3D physics simulation environment and hunger to understand the workings and infrastructure of a massive online user-generated gaming platform, this is your dream job.

Participate in determining technical approaches and developing new or enhancing network technologies
Implement and own major distributed simulation features
Implement and optimize the virtual world replication protocol
Maintain and optimize the test automation framework for distributed simulation.
Collaborate with all client engineering teams to build a scalable and versatile game networking environment

Strong background in high performance C++
Fluent in one or more of the following languages: Lua, Perl, Python, TCL/TK, shell script, Javascript
Experience with high level scalable server architecture design
Networking experience in TCP / IP and UDP protocols
Self-sufficient, self-organized, and able to take ownership of a project throughout its full lifecycle
BS or MS in Computer Science or related technical discipline

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