Principal Software Engineer, WebRTC
Confirmed on the employer's own hiring board on Nov 3, 2026. First seen by Alion on Jul 27, 2026. Roblox Corporation scores B on the Alion truth index.
Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences- all created by our global community of developers and creators.
At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there.
A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone.
As a Principal Software Engineer, Audio-Video-Communication team, you'll be in charge of building our upcoming platform to bring multi-modal communication experience - voice chat, 3D audio, and large-scale broadcast, to our users. If you enjoy working on C++ software while building products for the passionate community of Roblox, you'll be right at home within our experienced and growing social team. You will work with our Engineering Managers and Directors within our Engine's team, and will report to our Manager of the Real-Time Communications team.
You Will:
- Build and launch the latest real-time communication platform from the ground up, designed to support billions of users.
- Employ best programming practices to write code that is efficient, maintainable, and scalable.
- Play a crucial role in the introduction of high-quality communication features/products on a wide range of devices, from mobile to high-end platforms.
- Enhance the robustness and performance of existing components
- Collaborate with engineers across engine and partner teams to create synergistic solutions
You Have:
- Over 8+ years of experience developing and deploying user-facing software products.
- Successfully deployed a high-quality, multi-service distributed system at scale with low costs.
- Familiarity with the challenges of working at scale and on constrained platforms like consoles or mobile devices.
- Experience in performance optimization (working in Kernel, Assembly, C, and memory management).
- Proficiency in C++ and an understanding of parallel/concurrent programming concepts
- A grasp of industry standards, best practices, and design patterns
- Approached problems from multiple perspectives, weighing the advantages and drawbacks of different solutions
You Are:
- Enthusiastic about crafting software programming environments for game developers, eager to apply insights from multiple programming ecosystems to our scripting environment
- Able to navigate complex codebases
- Developing systems that are not just effective but also resilient over time
- Inquisitive, constantly learning and keeping abreast of the latest trends in scripting languages and programming environments
For roles that are based at our headquarters in San Mateo, CA: The starting base pay for this position is as shown below. The actual base pay is dependent upon a variety of job-related factors such as professional background, training, work experience, location, business needs and market demand. Therefore, in some circumstances, the actual salary could fall outside of this expected range. This pay range is subject to change and may be modified in the future. All full-time employees are also eligible for equity compensation and for benefits as described on this page.
Annual Salary Range
$295,250—$345,040 USD
Roles that are based in an office are onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday (unless otherwise noted).
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.
For US based roles only, please note the Company may not be able to employ candidates for this role who have United States work authorization related to certain U.S. visa categories, or support future H-1B sponsorship at this time.