Senior Software Engineer, Core Services. San Mateo LilyLifestyle

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.

• 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.

• Experience in Rust, Go, C#, Java or any other object‑oriented…