Senior UI Platform Engineer — Luau & Foundations

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

Job summary

Roblox Corporation is seeking a Senior Software Engineer for the Foundation & Luau Platform to shape the UI framework and shared component library that power Roblox’s UI across devices. You will design and evolve core systems beneath the UI, including navigation, routing, and data flow, to ensure fast, consistent experiences for users on mobile and desktop.

The role emphasizes hands-on React work, Luau/Lua familiarity, performance tuning, and collaboration with product and design teams.

Qualifications

• 4+ years of professional experience building and shipping client applications, ideally on mobile or desktop
• Strong hands-on experience with React and a solid understanding of its component model, state management, and rendering behavior
• Experience designing shared frameworks, UI platforms, or core libraries that other engineers build on
• Solid understanding of client rendering and layout performance across multiple screen sizes
• Strong debugging and profiling skills with performance issue diagnosis
• Experience with feature flagging, staged rollouts, and experiment-driven launches
• Strong written and verbal communication skills to align multiple teams around a technical plan
• Comfort working in a large, evolving codebase and migrating legacy code incrementally

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
• Drive startup performance, transition smoothness, and layout stability across devices using traces and telemetry
• Roll out platform changes safely at scale with feature flags, staged rollouts, and safe rollbacks
• Drive adoption of the platform across Roblox by partnering with product, design, and feature engineering teams
• Raise the quality bar through code review, test coverage, and documentation, and mentor other engineers

Skills

React

Luau/Lua

Cross-platform

Performance optimization

Debugging

Feature flags

Communication

Tools

React Native

Job description

Roblox Corporation is seeking a Senior Software Engineer for the Foundation & Luau Platform to shape the UI framework and shared component library that power Roblox’s UI across devices. You will design and evolve core systems beneath the UI, including navigation, routing, and data flow, to ensure fast, consistent experiences for users on mobile and desktop.

The role emphasizes hands-on React work, Luau/Lua familiarity, performance tuning, and collaboration with product and design teams.