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Roblox

Runs a platform where users build and play games

Senior Software Engineer - C++

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

About the Job

Requirements

  • At least 3 years of experience writing high-quality, performant C++ code in large, complex codebases.
  • A proven track record of building reliable measurement, monitoring, or regression-prevention systems.
  • Ability to independently navigate complex, ambiguous systems and deliver stable, production-grade software.
  • Ability to discuss technical trade-offs with engineering peers and cross-functional partners.

Responsibilities

  • Own the end-to-end performance of the Roblox client across all platforms and directly improve key metrics, including time to interactive, app size, and battery usage.
  • Build benchmarking, profiling, and telemetry systems to detect regressions early and support continued application scaling.
  • Collaborate with stakeholders across Engineering, Product, and Design to evaluate technical trade-offs, align on company-wide priorities, and execute rollout plans.
  • Address complex, unfamiliar codebases and take ambitious projects from greenfield minimum viable product to production-grade software.
  • Mentor peers on performance best practices.

Desired Qualifications

  • Hands-on experience with on-device profiling on iOS and/or Android to identify and measure optimization opportunities.

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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