Software Engineer, User Co-Experience

Roblox • San Mateo, CA

5d

About The Position

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.

Requirements

• 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.

Responsibilities

• 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.

What This Job Offers

• Job Type: Full-time
• Career Level: Entry Level