Principal Software Engineer, WebRTC

San Mateo, CAFull-time$295k–$345k2026-10-29 → 2026-11-10

HybridNo visa sponsorship

Core

Building a real-time communication platform (voice chat, 3D audio, large-scale broadcast) for billions of users across mobile and high-end platforms.

Role type

Principal Software Engineer (Real-Time Communications)

Builds

Multi-modal communication features and the underlying real-time communication platform

Domain

Gaming / Real-time communication / Distributed systems

Required skills

C++, distributed systems, performance optimization, parallel/concurrent programming, kernel/assembly/memory management, constrained platform development

Preferred skills

scripting environment development, complex codebase navigation, resilience engineering

Technologies

C++, C, Assembly, Kernel

Responsibilities

Build and launch real-time communication platform from ground up, write efficient and scalable code, enhance robustness and performance of existing components, collaborate with engine and partner teams

Seniority

Principal, hands-on IC

About Roblox

Roblox provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. Roblox also provides reasonable accommodations to candidates with qualifying disabilities or religious beliefs during the recruiting process.