Senior Software Engineer (Backend), Co-Experience
Roblox · San Mateo, CA, United States
About this role
**Senior Software Engineer (Backend) — Co-Experience (Roblox)** Roblox is building the tools and platform that empower our community to bring any experience they can imagine to life—reimagining how people come together from anywhere in the world, on any device. As a **Senior Software Engineer (Backend)** on the **Co-Experience** team, you’ll work on high-visibility initiatives that define the future of age-appropriate communication. You’ll build and maintain the services behind a social ecosystem that keeps interactions **safe, civil, and meaningful** across diverse age groups. --- ### You Will - Collaborate within a cross-functional team (product, design, UXR, frontend, and backend engineering). - Take end-to-end ownership: drive initiatives from technical plans and architecture through launch, iteration, and measurable impact. - Maintain, improve, and scale the **Roblox Party System** to support millions of concurrent users with a **safety-first** mindset. - Partner with other engineering teams (matchmaking, recommendations, voice, economy) to integrate systems in a reusable, performant, and safe manner. - Uphold high quality standards while iterating on features with live production traffic and resolve escalations. - Raise the team’s technical bar and accelerate the productivity of junior engineers. --- ### You Have - **5+ years** experience working on **microservice architectures**, with a proven track record addressing scalability and reliability challenges (or **4+ years** with a graduate degree in CS or related field). - **3+ years** building systems behind consumer-facing APIs handling large numbers of concurrent users. - Strong server-side development and design principles; proficiency in at least one compiled language such as **C#, C++, Java, Go**, or similar. - Experience leveraging **AI-assisted development tools** to maximize engineering velocity and move efficiently from idea to production-ready code. - Ability to author clear, actionable technical design documents that align stakeholders and hold up in architectural review. --- ### You Are - **All-round:** generalist, open to learning new languages/technologies, and curious about parts of the system you haven’t worked on yet. - **Kind and generous:** respectful, assumes good intent, and helps others succeed—technical excellence without kindness isn’t enough. - **Product-opinionated:** shapes the roadmap and pushes for the right product outcomes. - **An AI advocate:** actively pushes AI-assisted development for yourself and your team. - **Continuously growing:** takes pride in craft and holds a higher standard each quarter. --- ### Pay & Location Notes - **San Mateo, CA (HQ):** Starting base pay range **$196,750–$243,290 USD** (actual base pay depends on job-related factors). Equity and benefits are also available. - Office roles are **onsite Tuesday, Wednesday, and Thursday** (optional Monday/Friday unless otherwise noted). --- Roblox is an equal opportunity employer and provides reasonable accommodations during the recruiting process. For US-based roles only: the company may not be able to employ candidates for certain US work authorization categories and may not support future **H-1B sponsorship** at this time.
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