Principal Software Engineer (WebRTC)

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

Company

Roblox develops a platform for creating and experiencing 3D immersive digital experiences, connecting users and developers globally.

What you will do

• Build and launch a real-time communication platform supporting voice chat, 3D audio, and large-scale broadcast.
• Design systems intended to scale to billions of users.
• Develop efficient, maintainable, and scalable C++ software.
• Deliver communication features across mobile devices, consoles, and high-end platforms.
• Improve the robustness and performance of existing components.
• Collaborate with engine engineers, partner teams, engineering managers, and directors.

Requirements

• 8+ years of experience developing and deploying user-facing software products.
• Experience deploying high-quality, multi-service distributed systems at scale.
• Proficiency in C++ and understanding of parallel and concurrent programming.
• Experience with performance optimization involving kernels, assembly, C, and memory management.
• Experience addressing constraints of consoles, mobile devices, and other limited platforms.
• Knowledge of software engineering standards, best practices, and design patterns, with the ability to navigate complex codebases.

Culture & Benefits

• Work on products used by tens of millions of people in shared 3D experiences.
• Collaborate with an experienced and growing social engineering team.
• Full-time employees are eligible for equity compensation and company benefits.
• For US-based roles, future H-1B sponsorship may not be supported, and certain US visa categories may not be eligible.
• Roblox provides equal employment opportunities and reasonable accommodations during the recruiting process.