Sr Engineer, Software - Billing

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 Software Engineer collaborates with cross-functional teams to architect, develop, and optimize software solutions that drive core billing and operational processes in mission-critical telecom environments. In this role, you will take technical ownership of complex backend components, ensure scalability and reliability of high-volume billing systems, and contribute to continuous improvement efforts across the platform. You will work with a blend of legacy systems and modern technologies—including C/C++, Java, Oracle PL/SQL, and Unix/Linux scripting—while mentoring junior developers and implementing engineering best practices. Ideal candidates bring deep experience in transactional telecom systems, strong analytical thinking, and a proactive approach to solving large-scale challenges that directly affect revenue generation and customer satisfaction.

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

Technical Engineering Services

• Drives engineering projects by developing software solutions; conducting tests and inspections; preparing reports and calculations. Encouraged to supervise base and associate level engineers as needed.

• Lead the design, development, and enhancement of core modules within a high-volume, telecom-grade billing and operational system.

• Translate sophisticated business requirements into robust technical implementations across invoicing, rating, and customer account lifecycle processes.

• Develop performant and maintainable code using C/C++, Java, and Unix/Linux shell scripting, ensuring standard processes are followed.

• Optimize and handle sophisticated PL/SQL queries and stored procedures for large-scale Oracle databases.

• Guide integration efforts with batch processes, schedulers, and other OSS/BSS components, ensuring operational efficiency.

• Conduct advanced root cause analysis of production issues and proactively implement preventative solutions.

• Drive modernization of legacy components by implementing abstraction layers, APIs, or refactoring initiatives.

• Lead code reviews and performance evaluations, mentoring junior developers and promoting engineering excellence.

• Author and implement high-quality documentation standards across technical, deployment, and fixing domains.

Innovation

• Contributes to designs to implement new ideas which use new frameworks to improve an existing or new system/process/service.

• Review existing designs and processes to highlight more efficient ways to complete existing workload more effectively through industry perspectives.

• Understands the creation of company IPR.

Technical Leadership

• Collaborates with technical teams and applies system expertise to deliver technical solutions.

• Continuously learns and guides others existing and new technologies.

• Contributes to the development of others through mentoring or in house workshops and learning sessions.

Technology Strategy

• Contributes to new and existing technology options that support business goals.

• Understands current technology that supports business goals. Understands system protocols, how systems operate and data flows. Aware of current technology benefits. Encouraged 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.
   

Technical Writing

• Writes basic documentation on how technology works. Creates clear documentation for new code and systems used.

• Documenting systems designs, presentations, and business requirements for consumption and consideration at the manager level.

Education and Work Experience:

• Bachelor's Degree Computer Science or Engineering

• 4-7 years Technical engineering experience.

• Extensive experience with telecom billing systems or large-scale enterprise platforms, with a strong focus on rating, charging, and revenue assurance processes.

• Advanced proficiency in C/C++, Java, and Unix/Linux scripting, with a shown ability to develop maintainable, production-ready code.

• Deep expertise in Oracle SQL and PL/SQL development, including query optimization and troubleshooting in high-volume environments.

• Strong background in designing and maintaining batch-oriented, high-throughput transaction processing systems.

• Proven understanding of telecom-specific concepts such as CDR processing, roaming data handling, taxation logic, accounts receivable (AR), and RFS/provisioning integration.

• Experience working with mixed technology stacks that include legacy systems, proprietary tools, and modern interfaces.

• In-depth knowledge of telecom BSS/OSS domains, including mediation, billing cycles, and configuration-driven rule engines.

• Ability to mentor team members on system configuration, best practices, and complex logic interpretation.

• Experience with Amdocs billing systems is preferred.

Knowledge, Skills and Abilities:

• Communication (Required)

• Customer Service (Required)

• Analytics (Required)

• Technical Writing (Required)

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 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: $113,600 - $205,000

Corporate Bonus Target: 15%

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.