Senior Software Engineer, Foundation & Luau Platform

Roblox; San Mateo (CA); On-site; USD 197,000 - 243,000; Full time

Benefits offered by this job

Equity compensation

Benefits package

Onsite in San Mateo

Job summary

Roblox in San Mateo, CA is seeking a Senior Software Engineer to design and build frameworks and APIs for Roblox's UI, including layout, navigation, and a shared component library. You will optimize core client systems and drive fast, reliable UI across devices.

Join a collaborative team focused on performance, platform adoption across product groups, and disciplined code quality with robust testing and documentation; mentorship is encouraged across engineers.

Qualifications

• 4+ years of professional experience building and shipping client applications, ideally on mobile (iOS, Android) or desktop and with client architecture.
• Strong hands-on experience with React and understanding of its component model, state management, and rendering behavior, ideally in a mobile app context.
• Experience designing shared frameworks, UI platforms, or core libraries that other engineers build on.
• Solid understanding of client rendering and layout performance across screen sizes and orientations.
• Strong debugging and profiling skills with experience diagnosing performance issues like slow startup, visual stutter, and memory pressure.
• Experience with feature flagging, staged rollouts, and experiment-driven launches.
• Strong written and verbal communication skills and ability to align multiple teams around a technical plan.

Responsibilities

• Design and build the frameworks and APIs that Roblox's UI is built on, including layout and navigation systems, server-driven UI, and a shared component library.
• Build and evolve the core systems beneath the UI, such as navigation, routing, state management, and data flow, so features load quickly and behave consistently.
• Drive startup performance, transition smoothness, and layout stability across the client on phones, tablets, and desktop, using traces and telemetry to set measurable quality bars.
• Roll out platform changes safely at scale, using feature flags, staged rollouts, and side-by-side validation with fast rollback when needed.
• Drive adoption of the platform across Roblox by partnering with product, design, and feature engineering teams to guide them onto our frameworks and components.
• Raise the quality bar through thoughtful code review, strong test coverage, and clear documentation, and mentor other engineers.

Skills

React

Mobile development

UI framework design

Performance optimization

Cross-team collaboration

Code review & testing

Tools

React Navigation

Lua/Luau scripting

Server-driven UI

Job description

Roblox in San Mateo, CA is seeking a Senior Software Engineer to design and build frameworks and APIs for Roblox's UI, including layout, navigation, and a shared component library. You will optimize core client systems and drive fast, reliable UI across devices.

Join a collaborative team focused on performance, platform adoption across product groups, and disciplined code quality with robust testing and documentation; mentorship is encouraged across engineers.