Senior Software Engineer

T-Mobile US • Bellevue, WA

225d • $113,600 - $205,000

About The Position

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 Are you ready to join the Un-carrier movement? We are seeking a Senior Ansible Engineer to lead the design, validation, and deployment of scalable, secure, and reliable automation solutions to support T-Mobile's vast network and internal infrastructure. This role is critical to managing over 35,000+ RHEL, Windows, and AIX servers in our private cloud environment. You'll leverage cutting-edge tools such as Ansible Automation Platform, Puppet, and Python to drive automation, infrastructure-as-code (IaC), and configuration management initiatives. We pride ourselves on encouraging a culture of innovation, advocating for agile methodologies, and promoting transparency in all that we do. Join us in embodying the spirit of the 'Un-carrier' and make a tangible impact! Our team is dynamic where no day is the same, and we are diverse and inclusive passionate about growth and transformation. If you're up to the challenge, apply today!

Requirements

• Bachelor's degree in Computer Science, Engineering, or equivalent work experience.
• 5+ years of hands-on experience designing, building, and maintaining automation with Ansible.
• Deep knowledge of Ansible Automation Platform, Puppet, SCCM, and infrastructure-as-code principles.
• Proficient in Python, Jinja2, Bash, and PowerShell scripting.
• Hands-on experience with Ansible facts, modules, functions, and infrastructure upgrades.
• Experience with GitHub Actions, GitLab CI/CD, and modern DevOps practices.
• Strong understanding of Linux/Unix and Windows systems administration.
• Proven ability to solve complex problems and communicate effectively across technical domains.

Nice To Haves

• Experience integrating with ServiceNow, WSUS, and middleware databases via APIs.
• Background in large-scale systems (10K+ servers) and enterprise infrastructure.
• Familiarity with monitoring and reporting tools in cloud environments.
• Exposure to security and compliance standards in infrastructure automation.

Responsibilities

• Design, develop, and maintain Ansible playbooks, roles, and modules to support internal cloud-hosted physical and virtual infrastructure.
• Lead the migration from Puppet to Ansible; manage cross-platform infrastructure automation (RHEL, Windows, AIX).
• Develop and maintain API integrations with systems like ServiceNow, WSUS, and other middleware and DB services.
• Implement automation for patch management (Linux/AIX via Ansible + SNOW; Windows via WSUS).
• Ensure system reliability, performance, and scalability through proactive automation design and monitoring.
• Identify and implement new automation strategies to improve operational efficiency and reduce time-to-deployment.
• Contribute to the evolution of tools and processes that support performance optimization and capacity management.
• Partner with system engineers and cross-functional teams to define technical requirements and automation needs.
• Mentor junior engineers and actively contribute to knowledge-sharing initiatives across teams.
• Create clear, thorough technical documentation including designs, processes, code explanations, and deployment procedures.
• Present solutions and automation strategies to both technical and non-technical stakeholders.

Benefits

• Medical, dental and vision insurance.
• Flexible spending account.
• 401(k) plan.
• 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 and enhanced family support.
• Childcare subsidy.
• Tuition assistance and college coaching.
• Short- and long-term disability.
• Voluntary AD&D coverage, accident coverage, life insurance, disability insurance, and long-term care insurance.
• Mobile service & home internet discounts.
• Pet insurance.
• Access to commuter and transit programs.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Industry: Telecommunications
• Education Level: Bachelor's degree