Senior Software Engineer, Frontend (App Foundations)

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.What You’ll Do:In this Senior Frontend Engineering role, you will be a key contributor in shaping the future of Roblox’s application surfaces. You will develop the architecture and technical direction of our frontend stack for consumer-facing surfaces, working across teams and technology platforms to ensure our solutions are universal and scalable​. This role would require defining how all our frontend pieces fit together, how data flows through the client, and how we can build features faster and more reliably. You will have the opportunity to work with modern frameworks and also dive into our custom Luau-based tech, bridging the best ideas from the web ecosystem into Roblox’s unique environment. If you are excited by the idea of creating the foundation on which dozens of engineers will build new features – and doing it in a way that delights our end-users with speed and stability – then this role will be perfect for you.Join us and help build the frontend platform that underpins the metaverse! Together, we’ll enable incredible new experiences for our users and a productive, joyful development experience for our engineers.You Have: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​ (experience with large-scale or high-traffic applications is a plus​).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​, is highly desirable.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. 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). Familiarity with building applications that serve users on Web, iOS, Android, Windows, etc. is desirable for ensuring a seamless cross-platform experience​.Familiarity with C++ or other low-level languages is a nice to have but not mandatory.You will: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/code, and mentor engineers in best practices and effective use of platform tools.For roles that are based at our headquarters in San Mateo, CA: The starting base pay for this position is as shown below. The actual base pay is dependent upon a variety of job-related factors such as professional background, training, work experience, location, business needs and market demand. Therefore, in some circumstances, the actual salary could fall outside of this expected range. This pay range is subject to change and may be modified in the future. All full-time employees are also eligible for equity compensation and for benefits as described on this page.Annual Salary Range$242,100—$312,970 USDRoles that are based in an office are onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday (unless otherwise noted).Roblox provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. Roblox also provides reasonable accommodations to candidates with qualifying disabilities or religious beliefs during the recruiting process.For US based roles only, please note the Company may not be able to employ candidates for this role who have United States work authorization related to certain U.S. visa categories, or support future H-1B sponsorship at this time.