Senior Engineer, Site Reliability – Retail Mobility Engineering

T-Mobile

Senior Site Reliability Engineer ensuring the reliability and resilience of digital infrastructure at T-Mobile. Focusing on automating processes and enhancing operational efficiency across complex technology environments.

Posted 6/24/2026full-timeBellevue • Texas, Washington • 🇺🇸 United StatesSenior💰 $107,300 - $193,500 per yearWebsite

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Hard Skills

PythonBashCI/CD pipelinesautomation solutionstroubleshootingincident responseconfiguration managementcloud platformsinfrastructure automationobservability

Soft Skills

problem-solvinganalytical skillscollaborationcommunicationadaptabilityoperational efficiencycustomer relationship managementinnovationoperational stabilityroot cause analysis

Tools & Technologies

GitLabCyberArkHashiCorp VaultJamf Promobile device management platformsenterprise security platformsdeployment automationmonitoring solutionsoperational reporting solutionsendpoint management workflows

Industry Keywords

Site Reliability EngineeringDevOpsplatform engineeringsoftware developmentoperational workflowssecrets managementcredential lifecycle automationapplication deploymentpolicy managementmigration initiatives

Tech Stack

Tools & technologies

CloudCyber SecurityJamfPythonVault

About the role

Key responsibilities & impact

Automate processes to accelerate software development and deployment while minimizing manual interventions, including CI/CD pipelines, deployment automation, and endpoint management workflows where appropriate
Design, build, and enhance automation solutions that improve operational efficiency, deployment consistency, and service reliability across complex enterprise environments
Enhance system reliability and resilience by identifying issues and implementing preventive measures to reduce downtime and improve operational stability
Conduct root cause analysis and collaborate with problem management teams to prevent incident recurrence and improve system operations
Leverage programming, scripting, and incident response expertise to improve system robustness, deployment quality, and operational efficiency
Implement and support secure automation practices, including secrets management, credential lifecycle automation, and integration with approved enterprise security platforms
Partner with product, engineering, cybersecurity, and operations teams to design and implement scalable deployment and automation solutions
Support modernization initiatives involving mobile device management platforms, application deployment automation, platform migrations, and operational process improvements
Improve deployment visibility, monitoring, operational reporting, and observability capabilities to enhance traceability and operational awareness
Apply problem-solving and analytical skills to prevent operational incidents and maintain system stability
Continuously learn new skills and technologies to adapt to changing environments and drive innovation
Perform other duties and projects as assigned

Requirements

What you’ll need

Bachelor's degree plus 3 years of related work experience, advanced degree with 1 year of related work experience, or a combination of education and experience deemed equivalent
Degree in Computer Science, Engineering, or a related technical field
4 - 7 years working in operations or develops environments
4 - 7 years troubleshooting customer related issues and managing customer relationships
4 - 7 years developing software solutions using Python or similar programming languages
Preferred: Experience working in Site Reliability Engineering, DevOps, platform engineering, operations, or software development environments
Experience troubleshooting production issues and supporting business-critical systems
Experience developing automation solutions using Python, Bash, or similar programming languages
Experience designing and implementing CI/CD pipelines using GitLab or similar platforms
Experience automating deployment, configuration management, and operational workflows
Experience integrating and automating CyberArk, HashiCorp Vault, or similar enterprise secrets-management platforms
Experience administering Jamf Pro and/or supporting enterprise mobile device management environments
Experience supporting mobile device lifecycle management, application deployment, policy management, and migration initiatives
Experience applying cybersecurity best practices across software delivery and operational environments
Experience contributing to technical design decisions and collaborating across multiple engineering teams
Experience with cloud platforms, infrastructure automation, and containerized environments
Experience with observability, monitoring, and operational reporting solutions

Benefits

Comp & perks

medical, dental and vision insurance
flexible spending account
401(k)
employee stock grants
employee stock purchase plan
paid time off and up to 12 paid holidays
paid parental and family leave
family building benefits
back-up care
enhanced family support
childcare subsidy
tuition assistance
college coaching
short- and long-term disability
voluntary AD&D coverage
voluntary accident coverage
voluntary life insurance
voluntary disability insurance
voluntary long-term care insurance
mobile service & home internet discounts
pet insurance
access to commuter and transit programs