Roblox
Principal Software Engineer, GenAI Platform
$329K–$362K
San Mateo, CA, United States · Principal · Full-time · Posted Oct 27, 2026
- Experience
- 8+ years.
- Education
- Undergraduate/graduate degree in computer science or a related technical field, or equivalent practical experience.
- Visa sponsorship
- For US-based roles, the company may not be able to employ candidates with work authorization related to certain U.S. visa categories or support future H-1B sponsorship at this time.
About the job
Sets technical strategy and owns the architecture and operation of platforms and services powering machine learning, generative AI, and agentic experiences across Roblox.
What you'll do
- Define the multi-year technical vision and architecture for AI platforms and services, and drive complex platform problems from framing through production.
- Establish self-service platform standards, including usage metering and spend controls; own reliability practices such as SLOs, capacity planning, on-call, and incident response.
- Build alignment across teams and leadership, and mentor engineers through technical guidance, design reviews, and code reviews.
What they ask for
- 8+ years building and operating large-scale production software, distributed systems, cloud services, or related infrastructure.
- Track record of designing and owning foundational systems or platforms with organization- or company-wide impact.
- Deep expertise in one or more of machine learning, generative AI, distributed systems, data infrastructure, or developer platforms.
- Expert proficiency in one or more of Go, Python, or Rust.
Nice to have
- Experience with LLM gateways, inference serving, or model routing.
- Experience with vector databases, similarity search, knowledge graphs, RAG, or agentic systems.
Pay
$328,610 — $362,280 USD (base salary)
Tools
Go, Python, Rust, LLM, vector databases, RAG
AI focus
Builds platforms and infrastructure for machine learning, generative AI, model training and inference, LLM services, agent infrastructure, and agentic experiences.
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