Sr. Platform Engineer—Compute Kubernetes (Remote)

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

Job Summary

As the largest online distributor of restaurant supplies and equipment, WebstaurantStore offers a catalog of more than 430,000 products backed by fast, dependable shipping. Unlike most e-commerce companies, we handle nearly all of our technology design, development, and systems management in-house. This lets us build custom solutions for a fast-changing market. That steady, organic growth has created an opening for a Senior Platform Engineer focused on on-premises Kubernetes who wants to take the next step in their career.

You’ll help own our on‑prem Kubernetes platform end to end: bare‑metal clusters, networking, storage, deployment pipelines, and observability. We’re looking for someone who understands why Kubernetes behaves the way it does, not just which command to run.

If your expertise is mainly in cloud technologies or managed services, we encourage you to explore other opportunities in our organization that may be a better fit.

Responsibilities

• Build, operate, and upgrade on-premises 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 such as Flux or GitLab CD.
• Diagnose issues across pods, nodes, workloads, and the network. This includes tracing traffic from the client through firewalls, load balancers, and ingress; and between services inside the cluster.
• Manage cluster networking with Cilium. Configure ingress controllers such as HAProxy, NGINX, or Traefik, including support for long‑lived connections like WebSockets.
• Help application teams set appropriate resource requests, limits, and health probes; and choose the right workload type for the job.
• Investigate performance regressions and resource saturation using metrics, logs, and profiling before reaching for a rollback.
• Build and refine dashboards, alerts, and log queries in Grafana and Loki while helping expand our OpenTelemetry instrumentation.
• Manage secrets withHashiCorp Vault.
• Research new platforms and tools and help guide the team’s technology decisions.
• Respond to production incidents, contribute to post‑incident reviews, and take part in the on‑call rotation.