Principal Platform Engineer

About T-Mobile T-Mobile US, Inc. (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. About TMUS Global Solutions 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. TMUS India Private Limited operates as TMUS Global Solutions. About the Role The Senior Platform Engineer is a key technical leader responsible for designing, developing, deploying, and optimizing platform services that support critical data workloads. This role blends platform architecture with hands-on engineering — focusing on performance, security, automation, cost-efficiency, and a stellar developer experience. Working within agile teams, this engineer collaborates cross-functionally with engineering, data, and product stakeholders to advance platform capabilities and align infrastructure with business strategy. This position plays a crucial role in enabling operational excellence, innovation, and strategic growth through robust platform solutions. What You’ll Do Design, develop, and deploy platform services to improve performance, security, and cost optimization Enhance and maintain infrastructure to efficiently handle core data workloads Collaborate across engineering, data, and product teams to expand platform capabilities Build automation pipelines to support deployment and developer experience at scale Ensure the security and resilience of platform architecture and implementation Work within Agile frameworks to streamline platform engineering and delivery Contribute to cross-functional projects and support strategic technology initiatives Participate in platform lifecycle planning, observability, and cost management Perform other responsibilities and projects as assigned by leadership What You’ll Bring Bachelor’s degree in Computer Science, Software Engineering, or a related technical field (Master’s preferred) 4–7 years of experience in platform engineering, cloud infrastructure, or DevOps Strong background in cloud computing (AWS, GCP, Azure) and infrastructure automation Proven ability to lead and implement scalable platform solutions in enterprise settings Hands-on experience in Kubernetes, CI/CD, scripting, and infrastructure-as-code Proficiency in Agile development and cross-functional collaboration Deep understanding of platform security, performance tuning, and operational optimization Certifications (preferred): CKA, AWS Solutions Architect, CISSP Must Have Skills Experience in Platform Engineering Proficiency in programming languages such as TypeScript, Java (Spring Boot), or Python Experience with monitoring tools (Splunk preferred, but others are acceptable) Solid understanding of both SQL and NoSQL database systems Hands-on experience with Kubernetes , Docker , and CI/CD pipelines. Proficiency in Helm Deployment Strategy and Distributed Caches (Redis/Hazelcast) and Entra Integration, OAUTH/RBAC Nice To Have Experience with developer platforms and internal platform-as-a-service models Familiarity with platform telemetry tools (e.G., Grafana, OTEL, Splunk) Proficiency in languages like Go Knowledge of service mesh, container orchestration, and GitOps practices Exposure to FinOps or platform cost governance strategies