Senior Site Reliability Engineer, Wikimedia Enterprise

The Wikimedia Foundation is seeking a Senior Site Reliability Engineer to join our team and help maintain the infrastructure powering Wikipedia’s data feeds. You will play a critical role in designing, developing, and scaling reliable API services that support the global knowledge ecosystem.

Key responsibilities

• Define, track, and improve Service Level Objectives (SLOs) and error budgets to ensure high availability.
• Build and enhance observability systems, including metrics, logs, and distributed tracing.
• Design and optimize CI/CD and GitOps workflows to enable automated, reliable deployments.
• Partner with engineering teams to embed reliability best practices throughout the development lifecycle.
• Participate in incident response and on-call rotations to maintain system health.

Requirements

• Proven experience operating highly available, large-scale distributed systems.
• Proficiency in at least one programming language such as Python or Go.
• Strong experience with Infrastructure as Code tools like Terraform or Ansible.
• Deep understanding of cloud infrastructure (AWS, Azure, or GCP) and scalability principles.
• Excellent communication skills and the ability to work effectively in a distributed, cross-functional team.

What we offer

• The opportunity to work on high-impact projects that serve billions of users worldwide.
• A collaborative, remote-first environment with a diverse and global team of engineers.
• A culture that values continuous improvement, blameless postmortems, and technical innovation.
• The chance to contribute to a mission-driven organization dedicated to free knowledge.