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.

As a Principal Software Engineer on our Marketplace engineering team, you will build applications that power Roblox's Marketplace. Your work will directly impact more than ~70M daily active users on the platform as they craft their identity on Roblox and will drive growth for our UGC community of developers. This role is unique, where you will develop high scale distributed virtual commerce and shopping systems . If you are an expert at building user facing systems and are passionate about scale, reliability and looking to join a team creating impactful products with our community, you will be right at home with us!

You Will:

  • Focus on personalized search and recommendation systems for Marketplace (

  • Build the backend systems for new shopping and commerce applications

  • Improve the discoverability and relevance of Marketplace inventory to match the best content being created by our community of developers

  • Support our search and recommendation infrastructure in production, sharing the on-call rotation with your team colleagues

  • Write high-quality, performant code, as well as refactor and improve our existing codebase

  • Improve system reliability, performance, and test coverage

You Have:

  • Experience with search and recommendation systems

  • Led cross functional engineering efforts to scale up backend systems that handle millions of transactions daily

  • Experience in designing and building backend applications using microservices architecture and API development

  • Experience with SQL and NoSQL database scalability and optimization

  • 8+ years of work experience with backend systems

  • B.S/M.S degree in Computer Science or have equivalent work experience in a production environment

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.

Annual Salary Range

$283,780—$331,640 USD

Roles that are based in our San Mateo, CA Headquarters are in-office Tuesday, Wednesday, and Thursday, with optional in-office on Monday and Friday (unless otherwise noted).

You’ll Love:

  • Industry-leading compensation package

  • Excellent medical, dental, and vision coverage

  • A rewarding 401k program

  • Flexible vacation policy

  • Roflex - Flexible and supportive work policy

  • Roblox Admin badge for your avatar

  • At Roblox HQ:

    • Free catered lunches five times a week and several fully stocked kitchens with unlimited snacks

    • Onsite fitness center and fitness program credit

    • Annual CalTrain Go Pass

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. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training.