Platform SRE: Own & Automate Scalable Infra

PostHog, Inc.; San Francisco (CA); Remote; USD 150,000 - 210,000; Full time

Job summary

PostHog is seeking a Senior SRE to own and evolve a scalable, stateful platform hosted on AWS and Kubernetes. You will lead provisioning, scaling, recovery, and automation to reduce operational load while delivering reliable services.

You will tackle multi-region, multi-account environments with GitOps (ArgoCD), Terraform/Terragrunt, and modern tooling. Join a remote-first team that ships quickly and thinks deeply about reliability.

Qualifications

• Deep hands-on experience with Kubernetes in production (EKS preferred).
• Strong experience operating production infrastructure on AWS with multiple accounts.
• Experience automating infrastructure using Terraform or Terragrunt at scale.
• Solid understanding of Linux systems (disk, memory, networking, failure modes).
• Experience supporting stateful systems (databases, queues, storage systems).
• Ability to debug and reason about performance and reliability issues in production.
• You're comfortable owning systems end-to-end, including on-call responsibilities.

Responsibilities

• Turn a fast-growing, stateful system into a predictable, well-automated platform (provisioning, scaling, rebalancing, recovery).
• Reduce operational stress by designing safe automation for traffic-heavy workloads and building tooling for scale.
• Work on problems at large scale (petabytes of data, thousands of cores) across a multi-region AWS platform running Kubernetes.
• Operate EKS clusters across environments with Karpenter autoscaling and ArgoCD-driven GitOps deployments.
• Manage and evolve a multi-AWS account organization including networking and cross-account connectivity.
• Maintain the Terraform/Terragrunt IaC platform and safe patterns for shared infrastructure.
• Improve operational tooling around deployments, schema changes, backups, restores, and incident response.
• Identify repeat pain points and eliminate them through code and self-healing automation.
• Help optimize cloud spend as you go.
• Participate in on-call and incident response with a focus on reducing incidents over time.

Skills

Kubernetes in prod

AWS expertise

On-call experience

Incident response

Linux administration

Troubleshooting at scale

Tools

Terraform

Terragrunt

Karpenter

ArgoCD

GitHub Actions

IAM & Networking (AWS)

Job description

PostHog is seeking a Senior SRE to own and evolve a scalable, stateful platform hosted on AWS and Kubernetes. You will lead provisioning, scaling, recovery, and automation to reduce operational load while delivering reliable services.

You will tackle multi-region, multi-account environments with GitOps (ArgoCD), Terraform/Terragrunt, and modern tooling. Join a remote-first team that ships quickly and thinks deeply about reliability.