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Senior Platform Engineer (SRE / DevOps)

T-Mobile USA, Inc.
Washington, United Statesfull_timeVerifiedPosted 27 Mar 2026
💰 $193,500/yr($107,300/yr$193,500/yr)

About the role

At T-Mobile, we invest in YOU!  Our Total Rewards Package ensures that employees get the same big love we give our customers.  All team members receive a competitive base salary and compensation package - this is Total Rewards. Employees enjoy multiple wealth-building opportunities through our annual stock grant, employee stock purchase plan, 401(k), and access to free, year-round money coaches. That’s how we’re UNSTOPPABLE for our employees!

Job Overview
We are seeking a foundational Site Reliability Engineer to join our Device Insurance Technology team as we build a new internal engineering capability. This role is a unique opportunity to help establish our DevOps and SRE practices from the ground up within a modern, cloud-native environment.

As the first dedicated SRE on the team, you will play a critical role in designing, building, and owning CI/CD pipelines, deployment processes, and production observability systems. You will work closely with development teams, architects, and external partners to transition operational ownership from legacy systems and enable scalable, reliable service delivery.

This is a hands-on, high-impact engineering role where you will balance building foundational systems with supporting live production environments. You will help shape the future operating model, drive automation, and influence how reliability is implemented across the platform.

Job Responsibilities

DevOps

  • Develop, configure, and support CI/CD pipelines.
  • Automate build, test, and deployment workflows to enable safe and repeatable releases.
  • Integrate automated quality checks, code scanning, and deployment validations into pipelines.
  • Support containerized deployments using Docker and Kubernetes.
  • Use Infrastructure-as-Code (IaC) tools like Helm to manage cloud infrastructure.
  • Participate in automated provisioning of environments and system configurations.
  • Embed monitoring and alerting into delivery pipelines.
  • Support debugging of build, deployment, and environment issues across Dev/Test/Prod systems.

Site Reliability

  • Automate processes to enhance system reliability and resilience.
  • Minimize operational incidents through proactive monitoring and maintenance.
  • Develop scripts, tools and automation to reduce manual efforts in operational tasks.
  • Manage incident response to ensure rapid recovery and minimal disruption.
  • Help build and maintain dashboards, alerts, and logs that provide visibility into system health and application behavior.
  • Use tools such as Prometheus, Grafana, Splunk, or OpenTelemetry to monitor services and infrastructure.
  • Analyze system performance data to guide optimizations and proactively detect issues.
  • Adapt to new technologies to maintain and enhance system robustness.
  • Contribute to documentation, runbooks, playbooks, and operational readiness reviews.

 

Required Qualifications

  • 4+ years of experience in DevOps and SRE role. Experience in developing and maintaining CI/CD pipelines for software deployment. Experience with Gitlab pipelines and helm.
  • 4+ years - Implementing and managing cloud-native platforms and solutions. Hands-on experience with containerization (Docker, Kubernetes).
  • 4+ years Hands-on experience with monitoring/logging tools such as Splunk, Grafana, OpenTelemetry and incident management.
  • 4+ years - Guiding and mentoring teams in reliability engineering practices.
  • Understanding of web protocols, how full stack applications operate and data flows
  • Basic knowledge of at least one major cloud platform (AWS preferred).
  • Strong communication skills and ability to work under pressure.

 

Preferred Qualifications

  • Experience integrating DevSecOps tools like code scanning, policy enforcement or container image validation.
  • Understanding of blue/green, canary or rolling deployment strategies.
  • Exposure to artifact management, secrets management or GitOps workflows.
  • Exposure to incident management frameworks including alerting, escalation and postmortem practices.

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Company

T-Mobile USA, Inc.

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