Site Reliability Engineer

About the Company

PostHog is a product-led platform that acts as a co-pilot for product development, offering tools like AI devtools, built-in data warehouses, and AI-powered analytics. They are a well-funded, remote-first company focused on autonomy, transparency, and shipping fast.

Responsibilities

• Turn a fast-growing, stateful system into a predictable, well-automated platform
• Operate EKS clusters across several environments using Karpenter, Cilium, and ArgoCD
• Manage and evolve a multi-AWS account organization, including networking and access control
• Maintain the Terraform/Terragrunt IaC platform and automated pipelines
• Improve operational tooling for deploys, schema changes, backups, and incident response
• Reduce operational load through code and self-healing automation
• Optimize cloud spend and participate in on-call/incident response

Requirements

• Deep hands-on experience with Kubernetes in production (EKS preferred)
• Strong experience operating production infrastructure on AWS at scale
• Experience automating infrastructure using Terraform or Terragrunt
• Solid understanding of Linux systems (disk, memory, networking)
• Experience supporting stateful systems like databases and queues
• Ability to debug performance and reliability issues in production
• Comfort with end-to-end system ownership and on-call responsibilities

Preferred Qualifications

• Experience with GitOps workflows (ArgoCD) and CI/CD pipelines (GitHub Actions)
• Experience building AI agent-enabled base-level infra services
• Familiarity with multi-region infrastructure and consistency/availability tradeoffs