Senior Software Engineer (C++)

Location: San Mateo, California, United States; onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday

Salary: $195,780–$242,100 USD base pay per year

Company

Roblox builds a 3D immersive digital experience platform and tools that enable developers and creators to build, share, and connect across devices.

What you will do

• Own end-to-end performance for the Roblox client across Android, iOS, macOS, Windows, Xbox, PlayStation, and TV.
• Improve key performance metrics including time to interactive, application size, battery usage, responsiveness, efficiency, and stability.
• Build benchmarking, profiling, measurement, monitoring, and telemetry systems to detect regressions early.
• Collaborate with Engineering, Product, and Design stakeholders to evaluate technical trade-offs and plan production rollouts.
• Navigate complex codebases, lead projects from greenfield MVP to production-grade software, and mentor peers on performance practices.

Requirements

• 3+ years of experience writing high-quality, performant C++ in large and complex codebases.
• Experience building reliable measurement, monitoring, or regression-prevention systems.
• Ability to work autonomously through complex and ambiguous systems and deliver stable, production-grade software.
• Strong communication skills for discussing technical trade-offs with engineering and cross-functional partners.
• Ability to work onsite at the San Mateo headquarters Tuesday through Thursday.

Nice to have

• Hands-on experience with on-device profiling on iOS and/or Android.

Culture & Benefits

• Work on a platform used by more than 150 million people daily.
• Collaborate with teams across Engineering, Product, and Design.
• Full-time employees are eligible for equity compensation and company benefits.
• Roblox provides equal employment opportunities and reasonable accommodations during the recruiting process.
• Future H-1B sponsorship may not be supported for this role, and certain U.S. visa work authorizations may not be eligible.