Senior Software Engineer - Engine Systems

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 Senior Software Engineer on the Engine Systems team, you will help build the core diagnostic and reliability frameworks that power Roblox’s engine. In this role, you will design and build the systems that allow us to monitor, analyze, and improve the Roblox experience across millions of concurrent users.

You will contribute to platform-level systems that help Roblox understand hangs, crashes, performance regressions, and session health across our supported clients. This work requires navigating platform-specific limitations across vendors such as Apple, Microsoft, Google, Sony, and others, while building reliable systems that help engineering teams safely ship changes to Roblox at global scale.

You Will

• Build and maintain systems that report detailed stability, reliability, and performance signals across Roblox clients.
• Write well-instrumented systems-level code across supported devices, including mobile, desktop, and major console platforms.
• Ensure internal engineers have the tools and signals they need to detect, understand, and resolve disruptions to the user experience.
• Design highly reliable systems that must operate reliably at Roblox’s massive scale, where even small regressions can have significant impact.

You Have

• 5+ years of professional software engineering experience, with strong ownership of complex technical systems.
• Strong proficiency in native C++ or Objective C code
• Familiarity with at least one non-desktop platform (e.g. mobile or console)
• Comfort debugging difficult technical problems across first-party, operating system, and tooling boundaries.
• A collaborative approach to engineering, with strong communication skills and a focus on team outcomes.

Additional Considerations

• Experience building observability systems, crash reporting, hang detection, application performance monitoring, or related diagnostic tooling.
• Experience working cross-functionally with Data Science, Infra, and similar stakeholders to guide technical decisions.
• Multi-platform expertise involving several mobile or console ecosystems.
• Interest in mentoring other engineers and raising the engineering quality of the broader team.
• Experience with game engines, large client applications, or performance-critical runtime systems.