Senior Software Engineer (Full Stack), Global Actions

San Mateo, CA · San Mateo · USD 196,750-243,290 / year · 3+ years experience · Full-time · Onsite · Posted Sep 25, 2026

At a glance

As a full stack Senior Software Engineer you'll help build Global Actions: the systems that make core actions work consistently across every surface and platform on Roblox.
Your first focus will be the Affinity System, which powers how people save and organize the things they care about on Roblox: a unified affinity system covering Saves, Collections, and Wishlists, replacing today's fragmented Favorites experience.
You'll work across the stack, from backend APIs and data models to cross-platform React based UI solutions.

Design and build the backend APIs and services, covering collections, items, pagination, and batching, that power Saves, Collections, and Wishlists
Lead the migration from Favorites to Saved without losing user data, across web, mobile, desktop, console, and VR
Build user facing surfaces, including the Saved Library and Collections pages, in partnership with Product and Design
Design for privacy and safety, so users only see content and Collections they're allowed to view
Extend the system to new entity types as the platform grows

3+ years of experience building full-stack systems, including backend, APIs, and frontend applications at scale.
Experience with React, TypeScript/JavaScript or similar
Experience with data modeling for systems with complex relationships, such as privacy and visibility rules

Roles that are based in an office are onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday (unless otherwise noted).