Principal AI Build Platform Architect

Roblox Corporation

San Mateo (CA)

On-site

USD 345,000 - 399,000

Full time

11 hours ago

Be an early applicant

A complete application in a minute

Tailored resume and cover letter, ready to send.

Get past ATS filters

Job summary

Roblox Corporation seeks a Principal Software Engineer for the Build Platform to set the technical direction of the infrastructure behind AI-powered creation on Roblox. You will own the Build agent platform architecture and drive reliability, cost efficiency, and scalable evaluation.

This role blends hands-on engineering with strategic leadership across teams. You will work with product, ML infrastructure, and Safety to ship new capabilities quickly and safely, mentoring engineers and raising

Qualifications

8+ years building and operating large-scale distributed systems with technical leadership across teams
Experience designing backend platforms used by multiple engineering teams
Hands-on with production AI/ML: model serving, orchestration, LLM integration, or agentic execution loops
Strong understanding of tool and skill design and evaluation for AI systems
The judgment to weigh tradeoffs and make pragmatic calls under ambiguity
BS in Computer Science or a related field, or equivalent professional experience

Responsibilities

Own the technical architecture and long-term roadmap for the Build agent platform
Design for reliability, safety, observability, and cost efficiency in production AI workloads
Define how we measure agent quality and build the evaluation infrastructure
Partner with Build product teams, ML infrastructure, and Safety to ship new capabilities quickly and safely
Raise the engineering bar through design reviews, mentorship, and hands-on technical leadership