Senior Software Engineer, Build Platform
Core
Build cloud infrastructure powering AI-driven creation tools (Build) on Roblox, enabling creators to generate playable experiences from text descriptions via long-running agent workflows.
Role type
Senior IC backend/distributed systems engineer (AI/LLM infrastructure)
Builds
Cloud-hosted agent harness, workflow orchestration, model routing, sandboxed game sessions, and evaluation frameworks for millions of creators.
Domain
Cloud infrastructure + AI/LLM agentic systems
Deliverable
production ML models
Required skills
Backend/distributed systems design, cloud infrastructure, containerized services, workflow/job orchestration, observability, incident response, code review, technical spec writing, mentoring
Preferred skills
LLM APIs, agent frameworks, eval pipelines
Technologies
C#, Java, Go, Temporal, Kubernetes
Responsibilities
Design and operate agent platform services (orchestration, session management, tool execution); improve reliability/latency/cost of multi-step agent workflows; build evaluation infrastructure; partner with product/ML/Safety teams; participate in on-call rotation.
Seniority
Senior, hands-on IC
