Sr Software Engineer - Tax Technology

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!

• Drive engineering projects by developing software solutions, conducting tests and inspections, and preparing reports.
• Understands system protocols, how systems operate and data flows.
• Aware of current technology benefits.
• Expected to independently develop a full software stack. Understands the building blocks, interactions, dependencies, and tools required to complete software and automation work.
• Independent study of current technology is expected.
• Interact with system engineers to define system requirement and/or vital requirements for automation.
  Design, build, and support backend services using .NET (Core/6/7) and frontend UI components in Angular.
• Develop and maintain SQL Server (AWS RDS) databases supporting tax applications.
• Build orchestration layers for tax workflows to handle integration across billing systems, ERP, exemption services and tax engines.
• Implement and handle cloud-native and hybrid deployments across on-premise environments, AWS, Azure, and Oracle Cloud using Kubernetes/Conductor, Docker, and GitLab CI/CD pipelines with a strong focus on scalability and resilience.

• Contribute to designs that apply new frameworks to improve systems and processes.
• Evaluate current-state tax technology ecosystem and help define target-state tax architecture in partnership with architects and product managers.
• Explore opportunities to apply AI/ML techniques to optimize tax workflow orchestration, anomaly detection, and process automation.

• Collaborate with technical teams and utilize system expertise to deliver technical solutions.
• Continuously learn and teach others existing and new technologies.
• Act as a founding engineer for Tax Technology, setting coding standards and engineering practices for future hires.

• Contribute to new and existing technology options that support business goals.
• Understands current technology that supports business goals.
• Ensure tax platform design aligns with enterprise multi-cloud strategy, DevOps practices, security standards, and long-term scalability.

• Write basic documentation on how technology works. Create clear documentation for new code and systems.
• Document systems designs, presentations, and business requirements for consumption and consideration at the manager level.
• Create technical documentation for tax workflow orchestration, APIs, and custom enhancements to support maintainability and audit compliance.

Education and Work Experience:

• Bachelor's Degree Computer Science or Engineering (Required)
• 4-7 years Technical engineering experience. Required

Preferred Qualifications:

• Familiarity with Vertex O-Series or Vertex Edge indirect tax engines.
• Background in the telecommunications industry, especially billing systems and telecom taxation.
• Experience designing and implementing orchestration layers for complex business workflows.
• Familiarity with rules engines or policy-driven logic frameworks.
• Experience in applying AI/ML to enhance workflow automation, monitoring, and performance optimization.
• Prior experience in small, high-impact teams or as an early hire in a new function a strong plus.
• 7+ years Technical engineering experience (Required)
• 7+ years of professional software development experience (Required)
• Experience with SQL Server (AWS RDS), database design, and integration.
• Hands-on experience with cloud-native and hybrid deployments across AWS, Azure, Oracle Cloud, and on-premise environments.
• Experience with container orchestration using Kubernetes/Conductor and CI/CD pipelines in GitLab.

Knowledge, Skills and Abilities:

• Strong proficiency with .NET Core/6/7 backend development and Angular front-end frameworks.
• Exceptional communication skills, with the ability to clearly explain technical concepts to non-technical partners.
• Strong ownership and accountability, with a track record of driving projects independently to completion.
• Ability to thrive in ambiguous environments, creating clarity and structure where none exists.
• Experience mentoring engineers, setting coding practices, or establishing scalable processes preferred.

Licenses and Certifications:

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

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, 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.