Senior On-Prem Kubernetes Platform Engineer

WebstaurantStore; United States; Remote; USD 130,000 - 190,000; Full time

Job summary

WebstaurantStore is seeking a Senior Platform Engineer focused on on-prem Kubernetes to own our on-prem Kubernetes platform end to end, including bare-metal clusters, networking, storage, deployment pipelines, and observability.

You will write and maintain Helm charts, run GitOps-driven deployments with Argo CD or Flux/GitLab CD, and diagnose issues across pods, nodes, and the network. This role emphasizes hands-on understanding of Kubernetes behavior, not just commands.

Qualifications

• Extensive experience with on-prem Kubernetes, clusters, storage and networking.
• Strong knowledge of Helm and GitOps workflows.
• Experience with Argo CD, Flux, or GitLab CD.
• Proficiency with observability tools such as Grafana and Loki.
• Ability to diagnose performance issues and incidents across distributed systems.

Responsibilities

• Build, operate, and upgrade on-prem Kubernetes clusters and the infrastructure underneath them.
• Write and maintain Helm charts that are clean, reusable, and follow best practices.
• Run GitOps-driven deployments with Argo CD or similar tools.
• Diagnose issues across pods, nodes, workloads, and the network including ingress and firewall paths.
• Manage cluster networking with Cilium and configure ingress controllers (HAProxy, NGINX, Traefik) including WebSockets.
• Help application teams set resource requests, limits, and health probes; select workload types.
• Investigate performance regressions and resource saturation using metrics and logs.
• Build dashboards, alerts, and log queries in Grafana and Loki; expand OpenTelemetry instrumentation.
• Manage secrets with HashiCorp Vault; research new platforms and guide tech decisions.
• Respond to production incidents and participate in post-incident reviews and on-call rotations.

Skills

On-prem Kubernetes

Helm charts

GitOps tooling

Kubernetes networking

Observability

Troubleshooting

Cluster administration

Tools

Argo CD

Flux

GitLab CD

Cilium

NGINX

HAProxy

Traefik

Grafana

Loki

OpenTelemetry

HashiCorp Vault

Kubernetes

Job description

WebstaurantStore is seeking a Senior Platform Engineer focused on on-prem Kubernetes to own our on-prem Kubernetes platform end to end, including bare-metal clusters, networking, storage, deployment pipelines, and observability.

You will write and maintain Helm charts, run GitOps-driven deployments with Argo CD or Flux/GitLab CD, and diagnose issues across pods, nodes, and the network. This role emphasizes hands-on understanding of Kubernetes behavior, not just commands.