Senior Software Engineer, Systems

Roblox Corporation; San Mateo (CA); On-site; USD 197,000 - 243,000; Full time

Job summary

Roblox Corporation in San Mateo, CA is seeking a Senior Software Engineer to build AI agent tooling for Roblox’s engine development workflows. You will own productivity tools spanning from problem identification to shipping solutions, with a focus on C and Rust integrations within Roblox’s C++ game engine codebase.

The role emphasizes turning ambiguous engineering needs into practical tools, collaborating with Engine and Infrastructure leaders, and delivering reliable developer experiences.

Qualifications

• 5+ years of software engineering experience working on projects from 0 to 1.
• Experience owning substantial parts of a developer tool or system through design, launch, and ongoing operation.
• Systems programming experience in C, C++, or Rust.
• Interest in AI-powered developer tools such as Claude Code, Codex, and Pi.
• The ability to turn ambiguous developer needs into practical solutions, work independently, and learn unfamiliar tools and systems.
• A bachelor’s degree in Computer Science, Computer Engineering, or a related technical field, or equivalent practical experience.

Responsibilities

• Own improvements to developer workflows, from identifying problems with engineers to designing and shipping productivity tools and measuring their impact.
• Build AI agent sandboxes and harnesses written in C and Rust, along with the integrations and context agents needed to work effectively in Roblox’s C++ game engine codebase.
• Partner with technical leaders across Roblox’s Engine and Infrastructure groups to deliver reliable tools and improve the daily experience of engineering at Roblox.

Skills

5+ years dev exp

Tool ownership

Systems programming

AI dev tools interest

Self-motivation

Independent learner

Education

Bachelor's degree in CS/CE or related field

Job description

San Mateo, CA, United States Early Career ID: 42193

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators.

At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there.

A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone.

Portal, part of Roblox’s Engine Productivity team, builds productivity tools for the hundreds of engineers developing Roblox’s game engine, desktop clients, apps, and Roblox Studio. As a Senior Software Engineer, you will build the systems that bring AI agents into engine development workflows. On a small team with broad reach, you will help decide where AI can meaningfully improve engineering productivity and take solutions from early experiments to reliable tools engineers use every day.

You will:

• Own improvements to developer workflows, from identifying problems with engineers to designing and shipping productivity tools and measuring their impact.
• Build AI agent sandboxes and harnesses written in C and Rust, along with the integrations and context agents needed to work effectively in Roblox’s C++ game engine codebase.
• Partner with technical leaders across Roblox’s Engine and Infrastructure groups to deliver reliable tools and improve the daily experience of engineering at Roblox.

You have:

• 5+ years of software engineering experience working on projects from 0 to 1.
• Experience owning substantial parts of a developer tool or system through design, launch, and ongoing operation.
• Systems programming experience in C, C++, or Rust.
• Interest in AI-powered developer tools such as Claude Code, Codex, and Pi.
• The ability to turn ambiguous developer needs into practical solutions, work independently, and learn unfamiliar tools and systems.
• A bachelor’s degree in Computer Science, Computer Engineering, or a related technical field, or equivalent practical experience.

Annual Salary Range

$196,750 — $243,290 USD

Roles that are based in an office are onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday (unless otherwise noted).

Roblox provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. Roblox also provides reasonable accommodations to candidates with qualifying disabilities or religious beliefs during the recruiting process.

For US based roles only, please note the Company may not be able to employ candidates for this role who have United States work authorization related to certain U.S. visa categories, or support future H-1B sponsorship at this time.