Senior Software Engineer, Core Services

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.

The Core Services team manages the core infrastructure and API stack and builds high throughput microservices that powers Roblox. These services need to be fast, reliable and highly scalable as they have a huge impact on the day-to-day experience of every Roblox user. In addition, the team owns shared libraries, infrastructure microservices, and the web infrastructure used by all other Roblox full-stack feature teams. We ship with testable and configurable features that allow for rapid experimentation, data collection, and optimize for performance and user engagement. From serving basic user information to populating content into in-experience. Core Services is integral to the Roblox experience.

As a Senior Software Engineer within the team, you will own and drive the development and management of core infrastructure, API stack, and microservices. These components are essential for supporting a range of services and platforms within Roblox, including our studio environment. Additionally, you will contribute to the development of tooling and frameworks for full-stack teams. You will get the chance to take ownership of high RPS (requests per second) services, contribute to the re-architecture of systems to accommodate our company's growth, and collaborate with a diverse set of teams including Infra and the product teams within Roblox, leading initiatives, and making a significant impact across the company.

Here are a few quick highlights of how we power Roblox:

Microservices - we manage 50+ microservices, the most of any Roblox full-stack engineering team. These services are crucial to run Roblox. They sit right at the heart of the connection between product and infrastructure. Our services peak at over 10M RPS, the highest load of any Roblox full-stack engineering team. Scalability and reliability of these services is important to keep the product alive.

Orchestration at Planetary Scale - Core Services is building Roblox's next-generation, in-house multi-cluster orchestration platform that spans global regions and manages hundreds of thousands of containers. This system operates across DCs, cloud regions, and edge sites. If you've ever wanted to design the control plane at globe scale where every millisecond matters, and where rollouts, autoscaling, and failover need to work flawlessly across continents, this is that challenge.

Content Delivery - Be part of the team responsible for serving millions of assets per second that makes the on-demand experiences of millions of players possible as Roblox continues to break world player count records. Authentication, encryption, compression, global delivery with low millisecond response times serving over 10's of millions of deliveries per second at peak is what the platform demands. Join us while we prepare for the next magnitude of growth.
You will:

• Report into the Core Services Organization.
• Build, maintain, and scale systems to support our goal of 1 billion active users.
• Design backend features for and mobile apps on iOS, Android, and Amazon platforms.
• Collaboratively build new microservices using Docker, .NET Core, Rust, Go and container orchestration.
• Build and establish core infrastructure accessible to all Roblox teams.
• Enforce high code quality standards, architectural designs, and long-term approaches as a gatekeeper.

You have:

• Experience in Rust, Go, C#, Java or any other object-oriented programming/systems level language
• 6+ Years of Experience building web applications in frameworks such as ASP.NET, SpringMVC, Express, Rails, or Flask.
• Experience designing high traffic REST APIs, using Containers and microservices.
• Experience building large scale distributed systems with focus on scalability, reliability, and availability.
• Experience in debugging, mitigating, and root causing problems in the production environment in a timely and systematic manner.
• Experience leading cross team greenfield projects.
• Bachelor's degree in Computer Science or a related field, or equivalent experience.

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 .

Annual Salary Range

$242,100-$293,800 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.