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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 Senior Backend Engineer on the Avatar Marketplace team, you will be building an international marketplace for millions of virtual items that users acquire to customize their avatars and identities on the Roblox platform. You will design, implement, and operate the frameworks and services you and the team build that help control the supply and demand of the Roblox economy.

The team is responsible for building systems that will help content creators become more successful sellers. With over 90 million daily active users (and growing), we are looking for an experienced engineer who is passionate about designing and building scalable systems for both sides of the marketplace. The Marketplace Foundation team's focus is to provide reliable and scalable solutions for critical systems supporting both Avatar Marketplace creators and users.

We aim to invent new and evolve existing core concepts to support new and future use cases in a holistic manner, such as Bundles, Limiteds, and Price Optimization. We help the creators to improve their earning while scaling Roblox's economy. The team is also responsible for ensuring 10x scalability headroom on critical Marketplace systems, improving the efficiency, enhancing fault tolerance and decreasing the number and time to resolution of production customer support tickets related to these systems.

You will:

Design and architect scalable, reliable, and fault-tolerant distributed systems, including microservices, message queuing systems, distributed databases, and cloud-based solutions.
Implement high-quality and dependable code with thorough unit and integration tests.
Develop backend systems to ensure the seamless and efficient operation of our services.
Troubleshoot and resolve intricate technical issues within distributed systems.
Optimize system performance, minimize latency, and maximize throughput.
Collaborate effectively with cross-functional teams, including product managers, research scientists, and other engineering teams.
Mentor and guide junior engineers, fostering continuous learning and professional development.
Actively participate in code reviews, architectural discussions, and technical design sessions.
Establish and advocate for best practices throughout the software development lifecycle.

You Have:

3+ years of professional experience in software development, with a significant focus on distributed systems.
A deep understanding of core distributed systems concepts, including the CAP theorem, consistency models, concurrency control, fault tolerance, and consensus algorithms (Paxos, Raft, PBFT).
Proficiency in one or more systems programming languages such as C#, Go, Rust, Java, C++, or Python.
Strong practical experience with containerization (Docker) and orchestration tools (Kubernetes, Terraform, Helm).
Experience with big data technologies such as Hadoop, Spark, and Kafka, and distributed databases like Cassandra and MongoDB.
Familiarity with monitoring and observability tools such as Grafana, Datadog, Prometheus, and the ELK stack.
Strong analytical and problem-solving abilities, with a proactive approach to identifying and resolving complex challenges.
Experience defining technical vision and providing technical leadership.
A willingness to embrace new technologies and a passion for continuous learning.

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$192,890—$238,520 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 (varies by exemption status)
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. Roblox also provides reasonable accommodations for all candidates during the interview process.