Senior Site Reliability Engineer: Facts, Skills, and Next Paths

A Senior Site Reliability Engineer (SRE) ensures that large-scale software systems are reliable, scalable, and secure. Day-to-day work involves automating operational tasks, responding to incidents, and improving system observability — not writing application features.

Core responsibilities include designing and maintaining CI/CD pipelines, managing Kubernetes clusters, automating infrastructure with Ansible, and handling Linux and network administration. At companies like SpaceX, SREs support satellite communication systems; at Fiserv, they keep payment platforms running for millions of transactions. The role typically sits on a platform or infrastructure team and collaborates closely with software engineers.

The median salary for this role is approximately $200,000. The skills most frequently requested in current job postings are Scripting, CI/CD, and Automation (each in 80% of listings), followed by Python or R, Linux Administration, and Kubernetes (70% each).