Jobs → Engineering → Site Reliability Engineer

About the Role We are looking for a Site Reliability Engineer to join T-Mobile's team. This role focuses on maintaining stability, observability, and resilience of hybrid billing test environments. Key Responsibilities • Manage and maintain multiple non-production test environments for hybrid billing systems • Design and document environment topologies, dependencies, and provisioning specs • Install, configure, patch, and upgrade OS, middleware, and applications • Manage routing, firewalls, DNS, load balancers, VPNs, and secure connectivity • Build observability with Prometheus, Grafana, ELK, Splunk, or Datadog • Automate with Python, Bash, Ansible, and Terraform • Design alerting, escalation, and auto-remediation for critical systems • Uphold data protection, access control, and compliance standards • Partner with QA, Dev, and Ops to keep test environments ready and available Requirements • Bachelor's degree in CS, Information Systems, or equivalent experience • 5+ years in sysadmin or SRE work in enterprise systems • Strong Linux/Unix administration and scripting skills • Solid network engineering: routing, VLANs, load balancing, VPNs, SSL, DNS • Cloud experience (AWS, Azure, or Oracle Cloud) and containers (Docker, Kubernetes) • Hands-on with observability tools (Prometheus, Grafana, Datadog, ELK, or Splunk) • Automation experience with Python, Bash, Ansible, or Terraform • Familiarity with CI/CD and infrastructure-as-code pipelines