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Job Overview
Are you ready to join the Un-carrier movement?
This Software Engineer role supports the design, implementation, and deployment of scalable software solutions for a fintech platform that powers digital banking, payments, account management, transaction processing, and financial services capabilities. The engineer will collaborate with senior engineers, product, QA, operations, and partner teams to develop backend services, APIs, and integrations that meet customer requirements and support reliable, secure, and high-availability environments.

This is a hands-on software development role for an engineer with strong software engineering fundamentals and interest in backend development, APIs, cloud-based services, and financial technology. Direct fintech experience is preferred but not required. Experience working with critical data, sensitive information, or systems with compliance expectations is relevant to the role.

Success is measured by the ability to deliver quality software solutions, write maintainable code, produce clear documentation, collaborate optimally with technical teams, and contribute to systems that support business goals and customer needs.
We are a team that encourages innovation and advocates an agile and open approach, truly working and playing in the Un-carrier way!

Job Responsibilities

• Develop software solutions that support engineering projects and meet customer requirements.
• Develop, enhance, and maintain backend services and APIs supporting financial products such as payments, accounts, transactions, and digital banking capabilities.
• Collaborate with senior engineers and technical teams to implement scalable, secure, and maintainable software components within established architecture and design patterns.
• Build and support integrations with internal platforms and external partners, including banking APIs, payment processors, and financial services providers.
• Write clean, maintainable, and well-tested code following software engineering standard processes.
• Participate in code reviews, unit testing, integration testing, debugging, and defect resolution.
• Assist with application monitoring, log review, solving, and resolution of production or production-like issues in accordance with team processes.
• Support CI/CD, deployment, and release processes as needed for assigned features and services.
• Work closely with product, QA, operations, and partner teams to deliver features aligned with business and customer needs.
• Create clear documentation for software code, APIs, workflows, system behavior, technical designs, and business requirements.
• Apply secure development practices when working with customer data, financial transactions, and critical systems.
• Continuously learn new technologies, tools, and financial services concepts to support platform growth and reliability.
• Contribute to technology strategy by understanding current technologies and supporting business goals.
• Present innovative ideas to improve systems, processes, or services based on industry research.
• Also responsible for other duties/projects as assigned by business management as needed.

Education and Work Experience

• Bachelor's Degree plus 3 years of related work experience OR advanced degree with 1 year of related work experience OR combination of education and experience deemed equivalent (Required). Acceptable areas of study include Computer Science or Engineering (Required)
• 2-4 years Technical engineering experience. (Required)

Required Qualifications

• Experience developing backend applications, APIs, services, or web-based software systems.
• Proficiency in at least one modern programming language such as Java, Kotlin, Python, Go, JavaScript, or Node.js.
• Basic understanding of REST APIs, web services, and backend application development.
• Familiarity with relational or NoSQL databases, including basic querying, data modeling, or persistence concepts.
• Understanding of software development fundamentals, including data structures, algorithms, debugging, object-oriented or modular programming, and clean code practices.
• Experience using Git or similar version control tools in a team-based development environment.
• Ability to write maintainable code and participate in unit testing, code reviews, debugging, and defect resolution.
• Ability to create or maintain technical documentation for code, APIs, workflows, or system behavior.
• Basic understanding of secure coding practices when working with customer, account, transaction, or sensitive data.

Preferred Qualifications

• Experience with cloud platforms such as AWS, GCP, or Azure.
• Familiarity with microservices architecture or distributed systems concepts.
• Exposure to event-driven systems, Kafka, messaging queues, or asynchronous processing.
• Knowledge of containerization using Docker or basic Kubernetes concepts.
• Exposure to CI/CD pipelines, deployment automation, or release processes.
• Familiarity with monitoring, logging, or observability tools such as Splunk, Datadog, CloudWatch, Grafana, or similar platforms.
• Understanding of security concepts such as authentication, authorization, encryption, secrets management, or secure API design.
• Experience working in regulated, compliance-driven, or sensitive-data environments such as healthcare, banking, credit card payments, insurance, telecom billing, or financial services.
• Exposure to fintech, payments, digital banking, cards, transaction processing, or banking partner integrations.
• Basic understanding of PCI, data security principles, auditability, or compliance-related software practices.

Knowledge, Skills, and Abilities

• Communication (Required)

• Customer Service (Required)

• Analytics (Required)

• Technical Writing (Required)

• Backend software development

• API development and integration

• Database fundamentals

• Debugging and problem solving

• Secure coding fundamentals

• Technical documentation

• Collaboration with engineering, product, QA, operations, and partner teams

• Attention to detail when working with customer, account, transaction, or financial data

• Customer-focused engineering attitude

• Ability to learn new technologies quickly

• Ownership of assigned features and work within established team standards and guidance

• Interest in financial systems, digital banking, and scalable platform development

• 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: $92,500 - $166,800

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.

Are you ready to kickstart your career with one of the most dynamic and innovative companies in the telecommunications industry? At T-Mobile, we believe in challenging the status quo and driving change. As an intern, you’ll have the opportunity to work on real projects that impact millions of customers, collaborate with talented professionals, and gain hands-on experience in a fast-paced environment.

Our internship program is designed to provide you with the skills and knowledge you need to succeed. You’ll be part of a team that values creativity, diversity, and a passion for technology. Join us and be part of a company that’s not just changing wireless, but changing the world.