Senior Software Engineer, Frontend (App Foundations)

Overview

Senior Frontend Engineering role shaping the architecture and technical direction of Roblox's application surfaces, building the frontend foundation on which many engineers build new features.

What you'll do

• Develop the architecture and technical direction of the frontend stack for consumer-facing surfaces, working across teams and technology platforms to ensure solutions are universal and scalable.
• Define how frontend pieces fit together, how data flows through the client, and how to build features faster and more reliably.
• Work with modern frameworks and bridge best ideas from the web ecosystem into Roblox's Luau-based environment.
• Design and implement robust, extensible systems powering Roblox's core surfaces (Home, Avatar, Search, etc.) to serve millions of users efficiently.
• Create reusable frontend abstractions using React paradigms and modern tech to enable fast, consistent UI development across teams and devices.
• Maintain and evolve Roblox's internal React-inspired Luau UI libraries, promoting modular design, state management patterns, and performance.
• Define architecture standards to ensure frontend code is scalable, testable, and aligned with proven patterns like Flux, MVC, and MVVM.
• Partner with engineering, product, and design teams to integrate shared solutions and deliver cohesive, high-quality user experiences.
• Address cross-surface issues like memory, responsiveness, and load times to ensure a reliable, fast UI at scale.
• Provide architectural leadership, review designs and code, and mentor engineers in best practices and effective use of platform tools.

What you'll need

• Bachelor's degree in Computer Science or a related field, or equivalent practical experience.
• 8+ years of software development experience, including substantial experience building user-facing frontend applications.
• Proven track record in implementing or architecting complex frontend systems for large-scale applications.
• Deep expertise in modern mobile/web/frontend technologies, including proficiency in HTML5, CSS3, and JavaScript/TypeScript or mobile equivalents, and hands-on experience with frameworks such as React.
• Comfortable with component-based architecture and state management patterns (Redux/Flux or similar) for building maintainable UIs.
• Strong programming skills in one or more scripting languages relevant to frontend and tooling such as TypeScript, Swift or Kotlin, or the ability to quickly learn them.
• Solid understanding of software design principles and architectural patterns as they apply to frontend development.
• Able to design clean APIs and module boundaries, and experienced in creating maintainable and testable code bases with proper unit/integration testing practices.
• Demonstrated ability to optimize frontend performance and diagnose issues, with knowledge of performance debugging, profiling, and benchmarking techniques on the client side.
• Passion for ensuring fast, fluid user experiences on all devices.
• Excellent communication skills and a team-oriented mindset.
• Ability to work effectively with cross-functional teams, gather requirements, and drive consensus on technical solutions.
• Comfortable sharing ideas, documenting designs, and collaboratively solving problems in a large engineering organization.
• Experience developing applications or libraries across multiple platforms (web, mobile, desktop).

Nice to have

• Experience with large-scale or high-traffic applications.
• Familiarity with building applications that serve users on Web, iOS, Android, Windows, etc.
• Familiarity with C++ or other low-level languages.

Details

• Location: San Mateo, CA, United States (headquarters).
• Roles based in an office are onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday (unless otherwise noted).
• Annual base salary range: $242,100 to $312,970 USD. Eligible for equity compensation and benefits.
• For US based roles only: 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.