Principal Software Engineer, Build (AI)

Location: San Mateo, California, United States; office-based roles are onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday.

Salary: $295,250–$345,040 USD annual base pay, plus eligible equity compensation and benefits.

Company

Roblox builds a platform and tools for creating, publishing, and experiencing 3D digital games and social experiences.

What you will do

• Develop Build and Studio Assistant surfaces used by Roblox creators.
• Ship end-to-end features for AI-assisted iteration, direct editing, monetization, analytics, and onboarding.
• Own projects from technical specification through execution and launch.
• Contribute to tools spanning the full game-creation lifecycle, including generation, iteration, playtesting, publishing, and discovery.
• Mentor engineers through formal mentoring and leadership by example.
• Collaborate with product, design, and cross-functional partners to maintain execution quality and velocity.

Requirements

• 8+ years of hands-on software engineering experience and a bachelor's degree in Computer Science or equivalent professional experience.
• Experience with C++, Luau, JavaScript, or TypeScript.
• Experience navigating complex codebases and designing system architecture.
• Experience driving cross-functional projects for consumer-facing products.
• Ability to work from the San Mateo office onsite Tuesday through Thursday.
• For US-based roles, future H-1B sponsorship is not currently supported and certain US visa categories may not be accepted.

Nice to have

• Experience building agentic tools.
• Familiarity with A/B testing.
• TypeScript and web expertise as a proxy for the team's technology stack.

Culture & Benefits

• Work on tools that help millions of creators build, grow, and monetize games.
• Shape safer and more civil shared digital experiences.
• Full-time employees are eligible for equity compensation and company benefits.
• Work with React, Luau, C++, and evolving technologies.