Sr Manager, Systems Reliability Engineering

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!

T-Mobile is transforming from a traditional Telco to a next-generation TechCo—and our Billing organization is leading the charge. We are rebuilding our foundational systems to enable world-class experiences not only for today’s wireless services, but also for tomorrow’s technologies like 6G, IoT, and beyond. The Senior Manager, Systems Reliability Engineer provides strategic and technical leadership for multiple software engineering teams focused on building and maintaining high-performance, carrier-grade telecom billing systems. This role is responsible for driving the operations of platforms that support complex billing operations—both real-time and batch—while enabling efficient monetization across prepaid, postpaid, broadband, and wholesale services. In this position, you will lead a high-performing team focused on ensuring the scalability, availability, performance, and reliability of mission-critical systems and services. You’ll drive proactive reliability strategies, foster a culture of automation and operational excellence, and partner across technology and business units to support T-Mobile’s Un-carrier vision. You will collaborate closely with product, architecture, and infrastructure teams to shape short- and long-term technology strategies that align with enterprise digital transformation goals.

As a senior leader, you will manage cross-functional delivery, drive engineering excellence, and mentor managers and technical leads. You will play a key role in ensuring that all platform capabilities meet performance, security, and compliance standards while remaining adaptable to evolving business needs and regulatory requirements. Your leadership will also help guide modernization of legacy systems, adoption of cloud-native technologies, and the implementation of DevSecOps practices across teams.

*** This position will sit in Bellevue, WA; Overland Park, KS; Atlanta, GA OR Frisco, TX. This is not a remote role - this is a hybrid environment requiring 3 days a week in office.

Job Responsibilities:

• Provide strategic and technical leadership across multiple software engineering teams delivering telecom billing solutions, including real-time rating, invoicing, and customer account lifecycle management. Ensure delivery aligns with organizational priorities and service-level expectations.
• Drive operational excellence by implementing best practices in code quality, automated testing, and scalable design. Oversee Agile execution at a program or portfolio level, including sprint planning, velocity tracking, and release coordination across multiple initiatives. 
• Lead organizational growth and workforce strategy, including talent acquisition, career development, and succession planning. Partner with recruiting and HR to build high-performing, scalable teams.
• Coach and mentor engineering leaders and senior technical staff, promoting technical ownership, innovation, and team health across the organization.
• Be responsible for the stability and operability of production billing systems, working with operations teams to ensure monitoring, incident response, and postmortems are embedded in the development lifecycle.

Qualifications:

Domain Expertise

• Deep subject-matter expertise in telecommunications billing systems, including high-volume rating engines, real-time and batch charging frameworks, invoicing pipelines, provisioning flows, and catalog-driven monetization. Strong command of subscription lifecycle management and revenue models spanning prepaid, postpaid, converged, and wholesale customer segments.  Proven ability to lead operations and delivery across complex billing ecosystems, ensuring business continuity and revenue assurance.

Technical Leadership

• Extensive experience working across both monolithic billing platforms (e.g., CDR-based batch processing) and modern distributed architectures (e.g., microservices, containers, cloud-native apps). Skilled in integrating legacy billing systems with modern API-driven services using REST, JSON, message queues, and API gateways, while ensuring backward compatibility and system interoperability. Demonstrated success in leading platform scalability, high transaction throughput, and data integrity across hybrid and multi-cloud environments.

Operational Excellence

• Own end-to-end reliability strategy for core platforms, with KPIs tied to uptime, latency, and performance SLAs tied to critical billing functions such as usage mediation, revenue accuracy, provisioning timeliness, and overall system availability.  Leads root cause investigations, systemic fixes, and performance optimization initiatives to ensure system reliability and automate operational resilience at scale. 

Organizational Leadership & Collaboration

• Provides high-level coaching and career development across multi-team organizations. Builds a culture of accountability, technical ownership, and delivery excellence. Facilitates alignment across multi-functional groups—engineering, QA, DevOps, product, architecture—to ensure consistent execution and inter-team collaboration in complex delivery environments (e.g., SAFe or hybrid Agile models). Foster a learning environment focused on innovation, accountability, and agility.

Strategic Vision

• Oversee development of automated tools for system reliability, monitoring, alerting, and deployment.  Promote CI/CD, observability, and AIOps practices.  Influence architecture and design decisions with a focus on fault tolerance and service recovery.

Required Education and Work Experience:

• Bachelor's Degree Computer Science or in a computer programming related field, or degree equivalent or expereince.
• 4- 7 years in infrastructure, DevOps, or reliability engineering roles
• 4-7 years sands-on expertise in cloud-native ecosystems (AWS, Azure, or GCP).
• 4-7 years proficiency with monitoring/logging tools (e.g., Prometheus, AppD, Grafana, Splunk, Datadog, New Relic).
• 2-4 years experience with Kubernetes, Terraform, Jenkins, or equivalent.
• 2-4 years Management experience with programming staff including leadership, planning, and coordination of development work for 4 large projects.
• 10 + years Overall IT experience.

Knowledge, Skills and Abilities:

• Microsoft Office, Microsoft SharePoint
• Splunk, Grafana, Kubernetes, Jenkins
• Software Development Life Cycle (SDLC)

We pride ourselves on encouraging a culture of innovation, advocating for agile methodologies, and promoting clarity 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 a diverse and inclusive team passionate about growth and innovation! If you're up to the challenge, apply today!

• At least 18 years of age
• Legally authorized to work in the United States

Travel:
Travel Required (Yes/No): Yes

DOT Regulated:
DOT Regulated Position (Yes/No): No
Safety Sensitive Position (Yes/No): No

Base Pay Range: $137,700 - $248,400

Corporate Bonus Target: 20%

The pay range above is the general base pay range for a successful candidate in the role. The successful candidate’s actual pay will be based on various factors, such as work location, qualifications, and experience, so the actual starting pay will vary within this range.

At T-Mobile, employees in regular, non-temporary roles are eligible for an annual bonus or periodic sales incentive or bonus, based on their role. Most Corporate employees are eligible for a year-end bonus based on company and/or individual performance and which is set at a percentage of the employee’s eligible earnings in the prior year. Certain positions in Customer Care are eligible for monthly bonuses based on individual and/or team performance. To find the pay range for this role based on hiring location, click here.

At T-Mobile, our benefits exemplify the spirit of One Team, Together! A big part of how we care for one another is working to ensure our benefits evolve to meet the needs of our team members. Full and part-time employees have access to the same benefits when eligible. We cover all of the bases, offering medical, dental and vision insurance, a flexible spending account, 401(k), employee stock grants, employee stock purchase plan, paid time off and up to 12 paid holidays - which total about 4 weeks for new full-time employees and about 2.5 weeks for new part-time employees annually - 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, and voluntary long-term care insurance. We don't stop there - eligible employees can also receive mobile service & home internet discounts, pet insurance, and access to commuter and transit programs! To learn about T-Mobile’s amazing benefits, check out www.t-mobilebenefits.com.

Never stop growing!
As part of the T-Mobile team, you know the Un-carrier doesn’t have a corporate ladder–it’s more like a jungle gym of possibilities! We love helping our employees grow in their careers, because it’s that shared drive to aim high that drives our business and our culture forward. By applying for this career opportunity, you’re living our values while investing in your career growth–and we applaud it. You’re unstoppable!

T-Mobile USA, Inc. is an Equal Opportunity Employer. All decisions concerning the employment relationship will be made without regard to age, race, ethnicity, color, religion, creed, sex, sexual orientation, gender identity or expression, national origin, religious affiliation, marital status, citizenship status, veteran status, the presence of any physical or mental disability, or any other status or characteristic protected by federal, state, or local law. Discrimination, retaliation or harassment based upon any of these factors is wholly inconsistent with how we do business and will not be tolerated.

Talent comes in all forms at the Un-carrier. If you are an individual with a disability and need reasonable accommodation at any point in the application or interview process, please let us know by emailing ApplicantAccommodation@t-mobile.com or calling 1-844-873-9500. Please note, this contact channel is not a means to apply for or inquire about a position and we are unable to respond to non-accommodation related requests.