Operate and evolve our EKS-based Kubernetes platform
Design and develop CI/CD systems supporting websites, services, and Thunderbird desktop releases
Write and maintain infrastructure in Pulumi and/or Terraform/OpenTofu across multiple AWS accounts
Operate and evolve our observability stack and partner with engineering teams to incorporate instrumentation and monitoring into service design
Apply security-conscious infrastructure practices
Diagnose and debug production incidents and drive root-cause analysis
Participate in on-call rotation and collaborate with SDEs and fellow SREs
Contribute to runbooks, architecture documentation, and team processes

7+ years of experience in infrastructure, platform engineering, or site reliability roles
Hands-on production Kubernetes experience in workload operations, troubleshooting, and cluster management
Hands-on experience with infrastructure-as-code on AWS using Terraform, OpenTofu, or Pulumi
Security awareness in day-to-day infrastructure work: identity, least privilege, secrets hygiene, and network controls
Demonstrated ownership mindset with the ability to proactively identify issues, drive work to completion, and communicate risks early
Excellent async written communication skills
Ability to collaborate effectively with software engineers and non-engineering stakeholders to improve platform reliability and operational efficiency
Ability to learn, evaluate, and responsibly use emerging technologies

Senior Site Reliability Engineer

Key skills