Senior Software Development Engineer

What you'll do

• Design and operate custom Kubernetes-native networking control planes to translate declarative APIs into dynamic data plane configurations.
• Build and maintain control-plane integrations using Envoy xDS APIs to configure listeners, routes, clusters, and traffic policies.
• Develop and manage Kubernetes networking capabilities including CNI, network policy, service routing, load balancing, and DNS.
• Deploy and optimize Cilium-based networking for Kubernetes, including network policy and observability.
• Develop Envoy filters, extensions, and authentication mechanisms to provide L4/L7 proxy capabilities.
• Design and manage cloud networking services across AWS and Azure, including VPCs, load balancers, and private connectivity.
• Build network observability and telemetry using tools like Hubble, OpenTelemetry, Prometheus, and Grafana.
• Participate in an on-call rotation to support production infrastructure, resolve incidents, and perform root-cause analysis.

What we're looking for

• 4+ years of experience developing production software, infrastructure platforms, networking systems, or distributed systems.
• Strong proficiency in Go and experience with one or more languages such as Python or Rust.
• Experience building, extending, or maintaining networking control-plane implementations similar to Istio, Contour, or Envoy Gateway.
• Strong understanding of Kubernetes networking including CNI, Services, NetworkPolicy, Ingress, Gateway API, DNS, and load balancing.
• Knowledge of networking fundamentals including TCP/IP, UDP, DNS, HTTP/1.1, HTTP/2, HTTP/3/QUIC, gRPC, TLS/mTLS, NAT, and routing.
• Direct involvement using Envoy Proxy, Contour, Istio, NGINX, HAProxy, or similar L4/L7 proxy technologies.
• Experience with Linux networking including namespaces, routing tables, iptables/nftables, sockets, conntrack, and packet-level traffic flows.
• Experience with networking in at least one major cloud platform such as AWS or Azure.
• Experience with infrastructure automation using GitOps, Argo CD, Helm, and CI/CD automation.
• Experience designing or contributing to a custom Envoy-based control plane (preferred).
• Experience with Envoy xDS APIs and dynamic configuration management (preferred).
• Experience with Contour, Istio, Envoy Gateway, Gateway API, or similar application-networking platforms (preferred).
• Experience developing Kubernetes CRDs, controllers, operators, admission webhooks, or API extensions (preferred).
• Hands-on experience with Cilium-based networking (preferred).
• Experience operating networking infrastructure across large multi-cluster and multi-region Kubernetes environments (preferred).
• Experience with Hubble, OpenTelemetry, Prometheus, Grafana, distributed tracing, or network-flow analytics (preferred).