Hiring: Senior Software Engineer- User Behavior Company: Roblox Location: San Mateo, CA Job Posted Time: 2026-09-10 12:09:30 Employment Type: Full-time Target Skills & Keywords : Data Pipeline, Feature Store, LLM, Systems Design, gRPC About the job Experience: •5+ years of experience building and operating production backend systems at scale, ideally in Go or a comparable statically-typed backend language. Required Skills: •Build the backend systems that fundamentally shift how Roblox responds to unsafe behavior - from reactive, stateless punishment to a personalized, adaptive system that reflects who a user actually is. •Own core backend infrastructure for a new capability at Roblox: a low-latency behavioral data layer, a centralized rules-and-inference engine, and a unified intervention-delivery framework that together let us treat users based on their real risk profile instead of a single point total. •Feel a deep sense of responsibility building systems that directly affect millions of users, especially minors, on one of the world's largest platforms. Qualifications: •Strong experience designing distributed systems: service APIs (RPC/gRPC), data modeling for high-throughput event ingestion, caching, and low-latency read paths. •Solid production operations fundamentals: monitoring, alerting, oncall, capacity planning, and incident response for systems with real user-facing impact. •A Systems Thinker: capable of designing infrastructure that other teams (ML, feature teams, policy) build on top of, not just point solutions. •A Pragmatic Builder: scrappy and impact-oriented, comfortable turning scattered, undocumented signals and legacy code paths into clean, well-owned services. •Comfortable with Ambiguity: this space is actively being redefined — you'll help set the standard, not just implement one handed to you. •A Reliability-Minded Engineer: you treat testing, migrations, and oncall as first-class parts of the job, not afterthoughts. •Committed to Ethical, Responsible Engineering: dedicated to building systems that are fair, auditable, and operate with the utmost responsibility toward user safety. Compensation: •$196,750 - $243,290 / year Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!