Principal Technical Architect- Billing Platform

Principal Architect 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: This Principal Architect partners closely with engineering teams to design and deliver end-to-end solutions for Metro Billing platforms. The role combines strategic architectural leadership with hands-on technical engagement, including reviewing application code, translating business requirements into scalable technical solutions, and guiding engineering teams through implementation decisions. Success requires balancing modernization opportunities with the realities of legacy platforms, proprietary integrations, and operational constraints. Job Responsibilities: Lead architectural design decisions and provide technical leadership to ensure scalable and maintainable end-to-end solutions across multiple systems and Metro Billing capabilities. Develop and maintain solution designs from concept through deployment, ensuring alignment with architecture standards, engineering best practices, and business requirements. Partner closely with engineering teams to review application code, validate implementation approaches, and provide technical guidance throughout the software development lifecycle. Translate business initiatives and requirements into scalable technical solutions while identifying implementation risks, dependencies, and opportunities for modernization. Balance innovation with platform stability by recommending where new technologies and approaches should be adopted and where existing solutions should be maintained. Own overall architecture for multiple capabilities, collaborating on frameworks, standards, and reusable components to support enterprise technology consistency. Engage with business stakeholders during project ideation to define solution options and support business case development prior to project initiation. Communicate solution designs through architecture diagrams, technical documentation, and design reviews using tools such as Lucid and Confluence. Collaborate with Agile delivery teams using Jira to support planning, execution, and solution governance. Coach and mentor engineers through architecture discussions, design reviews, and technical decision-making while promoting engineering best practices. Evaluate and leverage AI-assisted engineering tools, such as Claude, to improve engineering productivity where appropriate. Also responsible for other duties/projects as assigned by business management as needed. Education and Work Experience: Bachelor's Degree plus 7 years of related work experience OR Advanced degree with 5 years of related experience (Required) Acceptable areas of study include Computer Science, Engineering or a related field. (Required) 7-10 years Progressive experience in software engineering/enterprise architecture/technology leadership across multiple products, systems and/or platforms coupled with strong business acumen and executive presence. (Required) 7-10 years Experience working in solutions design and enterprise architecture delivering IT solutions. (Required) 7-10 years Experience in Enterprise applications, PLM, middle-tier services, database, storage, distributed computing, virtualization and/or application technology. (Required) Knowledge, Skills and Abilities: Required: Strong understanding of enterprise software development Experience designing and supporting complex billing, transaction processing, or telecommunications platforms. Ability to analyze and understand complex legacy codebases and proprietary application components. Strong ability to translate business requirements into scalable technical solutions. Experience creating architecture diagrams and technical documentation using Lucid or similar tools. Experience using Jira and Confluence in Agile software development environments. Experience coaching software engineers through architecture, design, and code review activities. Familiarity with AI-assisted software development tools, such as Claude or similar coding assistants. Preferred: Experience supporting Billing or other telecommunications billing platforms. Experience architecting high-volume transaction processing or enterprise billing solutions. Hands-on experience with C and C++ application development. Experience modernizing legacy enterprise applications while maintaining operational stability. Experience leveraging AI-assisted development tools to improve engineering productivity. Additional Job Description: 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: $123,900 - $223,600 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, visit 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 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 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.