R
Roblox
Senior Software Engineer (Application Gateway)
Skills
RustGolangMicroservicesKubernetesCertificate Management
21 days ago
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Important information
Contract type:
Permanent
Salary:
$196,750 – $243,290 / year
Location:
United States
Work mode:
Onsite
Published on:
30 September 2026
What they need
- Roblox is reimagining the way people come together to connect, create, and express themselves
- To support our massive scale, we are powered by thousands of microservices
- The Application Networking team connects and secures these services, building ingress gateways, managing the service mesh, and enabling seamless communication across Roblox’s hybrid on-prem and cloud infrastructure
- We are executing on Cloud Bursting, a strategic initiative to enable Roblox’s core services to transparently burst from on-prem data centers to the cloud, allowing us to handle historical peak concurrent players and survive regional failures
- You will join our Application Gateway team to build the networking infrastructure that makes this possible
- Design, build, and operate Roblox’s Envoy-based application gateway fleet — the front door for billions of daily requests — owning L7 routing, authentication, rate limiting, and traffic policy end to end
- Own the reliability and scale characteristics of the gateway: capacity and headroom modeling, failure isolation and blast-radius reduction, progressive delivery of config and code changes, and measurable reduction in edge-caused incidents
- Partner with the internal networking and service teams to deliver one coherent traffic story from client to service, abstracting cluster and regional boundaries away from application developers
- Serve as a primary escalation point for complex edge and gateway issues, debugging across Envoy configuration and internals, xDS control plane behavior, TLS termination, and the underlying network and load-balancing stack
- Act as a senior voice on the team, mentoring junior engineers and promoting best practices in testing, deployment, and reliability engineering- Comfortable working with Envoy proxy internals, xDS APIs, and control plane architectures
- Fluent in Go, C/C++, or Rust
- Experienced with on-call rotations and approach infrastructure with a “reliability-first” mindset
- Deeply knowledgeable of L7 networking concepts: routing and request transformation, TLS termination and certificate management, authentication and authorization, rate limiting, and load-balancing
- Experienced running Kubernetes in production and familiar with the K8s networking model
- Excellent at designing large-scale distributed systems that span multiple clusters, regions, and runtime environments
- A professional with 3+ years of experience in distributed systems, with strong expertise in networking architecture and technologies (Envoy, Kubernetes). You understand the tradeoffs of sidecar-based microservice architectures at scale
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