Software Engineer, User Co-Experience

As a Backend Engineer on the Co-Experience team , you will work on high-visibility initiatives that define the future of age-appropriate communication. Using modern technologies, you will build and maintain a social ecosystem that ensures safe, civil, and meaningful interactions across diverse age groups.

We are kind, highly collaborative, and draw on a mix of startup and large company backgrounds to iterate faster within Roblox.

Our primary product is a platform-level Party System . As the heartbeat of social interaction on Roblox, this system enables users to coordinate, form groups, and stay connected as they navigate across servers and immersive experiences.

While we have a strong foundation of chat, voice, gameplay mechanics, and creator APIs, we need your expertise to strengthen our backend infrastructure, build out new features, and accelerate our path toward product-market fit. As we scale, your work will directly impact our global community and support the company’s top-line growth.

You Have:

• An undergraduate/graduate degree in computer science, engineering or a related field.


• 2+ years of experience in working on microservice architectures with a proven track record in addressing scalability and reliability challenges.


• 1+ years of experience building systems behind consumer-facing APIs that can handle large numbers of concurrent users.


• Strong understanding of server-side development and design principles, with proficiency in at least one compiled language such as C#, C++, Java, Golang, or other.


• Strong product intuition - you think in terms of user experience, tradeoffs, and measurable outcomes, as well as system design.


• A track record of leveraging AI-assisted development tools to maximize engineering velocity, allowing you to rapidly prototype, iterate on complex logic, and move from ideation to production-ready code with high efficiency.

You Will:

• Collaborate within a multi-functional team that includes product, design, UXR, frontend and backend engineering.


• Maintain, improve and scale the Roblox party system to support millions of concurrent users.


• Participate in design and develop service infrastructure empowering Roblox creators to unlock new ways to co-experience for their users.


• Partner with other engineering teams (infrastructure, matchmaking, chat, voice, trust and safety) to integrate multiple systems in a reusable, performant and safe manner.


• Self-organize and take ownership of projects throughout their full lifecycle.


• Maintain high quality standards while iterating on features with live production traffic.


• Mentor interns.

Please note the Company may not be able to employ candidates who have United States work authorization related to certain U.S. visa categories, or support future H-1B sponsorship at this time. You may redact age, date of birth, and dates of attendance/graduation from your resume if you prefer.