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Site Reliability Engineer (Pacific timezone)

PostHog
Backend Developer • Remote • Full-time • 📍 Remote (US)
📄 View original listing (EN)

Site Reliability Engineer role at PostHog, an open-source product analytics and developer platform company (Y Combinator W20, $180m+ raised, all-remote). This is not a typical keep-the-lights-on SRE role: the work is about turning a fast-growing, stateful system into a predictable, well-automated platform through provisioning, scaling, rebalancing, and recovery. You work on problems that only show up at large scale (petabytes of data, thousands of cores, constant ingestion) across a multi-region, multi-account AWS platform running many services on Kubernetes. Open to candidates in Pacific timezones.

Stack

AWSGitHubhtmlKubernetesLinuxSQLTerraform

Responsibilities

  • ▹Operate EKS clusters across several environments with Karpenter autoscaling, Cilium networking, and ArgoCD-driven GitOps deployments
  • ▹Manage and evolve a multi-AWS-account organization, including provisioning, networking, access control, and cross-account connectivity
  • ▹Maintain the Terraform/Terragrunt IaC platform, including modules, automated plan-on-PR / apply-on-merge pipelines, and safe patterns for shared infrastructure
  • ▹Improve operational tooling around deploys, schema changes, backups, restores, and incident response
  • ▹Reduce operational load by identifying repeat pain points and eliminating them through code and self-healing automation
  • ▹Optimize cloud spend as you go
  • ▹Participate in on-call and incident response, with a strong focus on making incidents rarer over time

Requirements

  • ▹Deep hands-on experience with Kubernetes in production (EKS preferred), having debugged node pressure, networking issues, and deployment failures at scale (thousands of nodes)
  • ▹Strong experience operating production infrastructure on AWS, understanding organizational boundaries, IAM, and networking between many accounts
  • ▹Experience automating infrastructure using Terraform or Terragrunt at scale, including module design and state management
  • ▹Solid understanding of Linux systems (disk, memory, networking, failure modes)
  • ▹Experience supporting stateful systems (databases, queues, storage systems, etc.)
  • ▹Ability to debug and reason about performance and reliability issues in production
  • ▹Comfort owning systems end-to-end, including on-call responsibilities
  • ▹Based in the Pacific timezone

Nice to have

  • ▹Experience with GitOps workflows (ArgoCD) and CI/CD pipelines (GitHub Actions)
  • ▹Experience building AI agent-enabled base-level infra services for teams that move fast
  • ▹Familiarity with multi-region infrastructure and the consistency/availability tradeoffs that come with it

Soft skills

Enthusiastic, proactive ownership of projectsOptimistic problem solving and resilienceLow-ego, kind, considerate, and professional collaborationGenuine passion for building