Principal AI Build Platform Architect (Equity Eligible)

Game Companies

San Mateo (CA)

On-site

USD 345,000 - 399,000

Full time

17 hours ago

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Benefits offered by this job

Equity compensation

Benefits program

Job summary

Roblox is seeking a Principal Software Engineer for the Build Platform to shape the architectural direction of the AI-powered creation infrastructure used by millions of developers and creators worldwide.

You will own the technical roadmap for the Build agent platform, design for reliability, safety, and cost efficiency in production AI workloads, and collaborate with product teams, ML infrastructure, and Safety to ship capabilities quickly and safely.

Qualifications

8+ years of experience building and operating large-scale distributed systems.
Deep experience designing backend platforms used by other engineering teams.
Hands-on experience with production AI/ML systems, such as model serving, orchestration, LLM integration, or agentic execution loops.

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, including usage metering and model-routing strategy.
Define how we measure agent quality and build the evaluation infrastructure that drives model, prompt, and skill decisions.
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.