Senior Software Engineer (Backend), Co-Experience

Collaborate within a cross-functional team that includes product, design, UXR, frontend and backend engineering.

Take end-to-end ownership of projects. Drive initiatives from the creation of comprehensive technical plans and architecture through to successful launch, iteration, and measurable impact.

Maintain, improve and scale the Roblox party system to support millions of concurrent users, with a safety-first mindset.

Partner with other engineering teams (matchmaking, recommendations, voice, economy) to integrate multiple systems in a reusable, performant and safe manner, working through alignment challenges autonomously.

Uphold high quality standards while iterating on features with live production traffic, and resolve escalations within your team.

Raise the team's technical bar and accelerate the productivity of junior engineers.

5+ years of experience working on microservice architectures, with a proven track record in addressing scalability and reliability challenges (4+ years with a graduate degree in computer science or a related field).

3+ years of experience building systems behind consumer-facing APIs that handle large numbers of concurrent users.

Strong understanding of server-side development and design principles, with proficiency in at least one compiled language such as C#, C++, Java, Golang, or other.

A track record of leveraging AI-assisted development tools to maximize engineering velocity, allowing you to navigate large codebases, iterate on complex logic, and move from idea to production-ready code with high efficiency.

The ability to author a clear, actionable technical design document that aligns stakeholders and holds up in architectural review.

All-round: You're a generalist, open to learning new languages and technologies, and drawn to the parts of the system you haven't worked on yet.

Kind and generous: You treat colleagues with respect, assume good intent, and go out of your way to help others succeed. You believe technical excellence without kindness is not enough.

Product-opinionated: You don't just execute plans, you proactively shape our roadmap, and push for the right product outcomes.

An AI advocate: You actively push the boundaries of AI-assisted development, for yourself and for your team.

Continuously growing: You take pride in your craft and hold yourself to a higher standard each quarter.

For roles that are based at our headquarters in San Mateo, CA: The starting base pay for this position is as shown below. The actual base pay is dependent upon a variety of job-related factors such as professional background, training, work experience, location, business needs and market demand. Therefore, in some circumstances, the actual salary could fall outside of this expected range. This pay range is subject to change and may be modified in the future. All full-time employees are also eligible for equity compensation and for benefits as described on this page.

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.