Senior Software Engineer (Frontend/Engine), Messaging

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. Text chat is one of the most visible and widely used features on Roblox, with over 2 billion messages processed daily.

Every day, tens of millions of players rely on it to coordinate, connect, and express themselves across thousands of games. It is also one of our highest-leverage engine services: our core text communication APIs are deeply embedded in the Roblox game engine, empowering tens of thousands of creators to build customized communication experiences in their games. As a Senior Software Engineer , you'll own the full frontend and engine-layer architecture of this system — from the React-based UI that players interact with daily, to the Lua/C++ service APIs that power creator integrations.

You'll be the person who makes text communication feel immersive, seamless in both 2D and 3D, safe, and expressive across mobile, PC, console and VR — at a scale few engineers ever get to work at. While our scope is vast, our teams remain intentionally lean to ensure impact. This gives you significant ownership, allowing you to lead cross-functional workstreams and shape our long-term roadmap from your first day.

You will: Design and deploy a cross-platform chat user interface, developing innovative solutions to optimize and scale systems that serve tens of millions of daily active users across mobile, PC, Mac, and console platforms. Design and evolve the TextChatService engine APIs that creators use to build custom communication features — one of the most widely used services in the Roblox game engine Lead the platformization of chat: standardizing and centralizing core components so other teams can build reliably on top of a shared communication foundation Drive innovation on upcoming products — cross-server communication, rich text, emotes, replies — and give developers the primitives to build deeply integrated social experiences in their games. Build and improve moderation and intervention systems in partnership with Trust Safety, helping uphold global and regional policy compliance across developer-customized experiences Enforce high quality standards while we iterate on feature development.

Collaborate with other engineering and product teams (Game engine, Creator, Trust Safety to name a few) at the company to push the boundary of what is possible. Own projects end-to-end: architecture, cross-functional alignment, implementation, launch, and long-term reliability Raise the bar on code quality, performance, and engineering practices across the team; mentor engineers and help grow future talent You have: 5+ years of experience as a front-end or client apps engineer working on complex user interfaces. Strong experience with React and/or React Native (or similar frameworks — Vue, Angular, Svelte) — fluent in component architecture, state management, and performance optimization Hold a Bachelor’s degree or equivalent experience in Computer Science, Computer Engineering, or a similar technical field.