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(NASDAQ: TMUS), headquartered in Bellevue, Washington, is America’s supercharged Un-carrier, connecting millions through its strong nationwide network and flagship brands, T-Mobile and Metro by T-Mobile. Customers benefit from an unmatched combination of value, quality, and exceptional service experience.</p><p><strong>TMUS Global Solutions:</strong></p><p>TMUS Global Solutions is a world-class technology powerhouse accelerating the company’s global digital transformation. With a culture built on growth, inclusivity, and global collaboration, the teams here drive innovation at scale, powered by bold thinking.</p><p><strong>About the Role:</strong></p><p>As a Senior Engineer – Telecom Billing, you will design, build, and support scalable, highly available software systems that power T-Mobile’s billing and customer service platforms. You will work hands-on with core telecom billing applications, contributing to system modernization, performance, and reliability, while exercising strong engineering judgment to diagnose and solve complex, often ambiguous technical problems.</p><p>In this role, you are expected to operate with a high degree of autonomy—working through unclear requirements and evolving problem spaces without reliance on step-by-step direction. You will make thoughtful design choices across distributed systems, balancing performance, reliability, maintainability, and scalability trade-offs in mission-critical environments.</p><p>You will collaborate closely with cross-functional engineering teams to deliver well-integrated solutions that align with business objectives and technical standards, while also influencing system design, production stability, and long-term architectural direction of T-Mobile’s billing platforms.</p><p><strong>What You’ll Do:</strong></p><ul><li>Design, develop, test, and deploy software solutions supporting large-scale telecom billing and customer service platforms.</li><li>Diagnose and resolve complex, systemic, and unclear production issues across distributed components, APIs, databases, and middleware layers.</li><li>Work effectively in ambiguous problem spaces, independently breaking down problems and driving solutions without prescriptive guidance.</li><li>Design and improve systems built on distributed architectures, APIs, and microservices, with an understanding of failure modes and resilience patterns.</li><li>Make informed engineering trade-offs (e.g., performance vs. maintainability, consistency vs. availability) aligned with business and operational needs.</li><li>Contribute to system and design improvements using modern engineering frameworks, tools, and industry best practices.</li><li>Collaborate with engineers, architects, and technical stakeholders to deliver scalable, reliable, and well-integrated solutions.</li><li>Support technology strategy by evaluating current and emerging technologies in alignment with platform and business goals.</li><li>Create and maintain technical documentation, including system designs, APIs, operational runbooks, and solution specifications.</li><li>Provide production support, lead root cause analysis, and drive long-term fixes rather than short-term patches.</li><li>Mentor team members through technical guidance, design discussions, and knowledge sharing.</li><li>Perform other duties and projects assigned by business management.</li></ul><p><strong>What You’ll Bring:</strong></p><ul><li>4+ years of hands-on software engineering experience in enterprise or telecom environments.</li><li>Strong proficiency in federated GraphQL and Java Springboot, with experience in large, business critical production systems.</li><li>Experience working with Oracle, mySQL, and Mongo databases and SQL in high-volume, high-reliability systems.</li><li>Solid understanding of distributed systems concepts, including APIs, microservices, concurrency, fault tolerance, and data consistency.</li><li>Demonstrated ability to analyze and diagnose complex technical issues that span multiple systems or components.</li><li>Proven experience working through ambiguity, independently defining problems, assumptions, and solutions.</li><li>Understanding of architectural and operational trade-offs, including latency, throughput, availability, consistency, and maintainability.</li><li>Experience with telecom billing platforms, customer service systems, or related domains (preferred).</li><li>Familiarity with middleware and transaction-based systems such as Tuxedo (preferred).</li><li>Strong analytical, problem-solving, and critical-thinking skills.</li><li>Ability to communicate effectively and collaborate across engineering and technical stakeholder teams.</li><li>Adaptability and resilience in fast-changing, high-impact environments.</li><li>Customer-focused mindset with a commitment to delivering reliable, high-quality solutions.</li></ul><p><strong>Must Have Skills:</strong></p><ul><li>GraphQL and Java Spring boot Software Development</li><li>Oracle Database, MySQL, Mongo and SQL</li><li>DevOps: GitLab CI, Docker, Kubernetes, AWS</li><li>Practical use of AI-assisted development tools to improve code quality, productivity, and reliability- Claud Ai</li><li>Problem Solving and Debugging.</li></ul><p><strong>Good to Have Skills:</strong></p><ul><li>Tuxedo Working Knowledge.</li></ul><p>&nbsp;</p><p><strong>TMUS India Private Limited, operating as TMUS Global Solutions, has engaged ANSR, Inc. 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