Roblox

Roblox is an online platform where users create and play games built by other users, with over 80 million daily active users and a developer community that has earned billions of dollars through the platform's economy. The company operates at massive scale, running hundreds of thousands of concurrent game servers and handling a global virtual economy. Roblox went public in 2021 and continues to expand internationally and into new age demographics.

Engineering at Roblox focuses on real-time systems, game engine development, distributed infrastructure, and machine learning for safety and discovery. The platform's core is built in C++ and Lua, with backend services in Go and Python. Engineers work on problems including low-latency networking, physics simulation, content moderation at scale, and the creator tooling used by millions of developers. The company has a strong simulation and real-time graphics engineering culture.