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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sr Engineer, Software - **Company:** T-Mobile Us, Inc. - **Location:** Bellevue, WA, United States - **Experience:** Expert - **Salary:** $114,400.0 - $156,000.0 - **Contract:** Permanent contract - **Skills:** Clean Code Principles, Java (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Architectural Patterns, Confluence, Automation of Tests, Microsoft Azure, Clinical Data Repository, Cloud Engineering, Configuration Management, Code Generation, Program Optimization, Software Quality, Code Review, Continuous Integration, Relational Databases, Software Debugging, Software Design Documents, Programming Tools, MongoDB, NoSQL, OAuth, Pair Programming, Software Tools, Session Management, Data Streaming, Systems Integration, Datadog, GitHub Copilot, Backend, Event Driven Architecture, Build Management, Kubernetes, Information Technology, Cassandra, Apache Kafka, Tools for Reporting, Api Design, Restful APIs, Splunk, Code Restructuring, Api Management, Docker, Microservices - **Published:** July 11, 2026 - **Apply:** https://www.careerjet.com/job/us38e8a07efb4b0ed2f81ca86108e1bed6/eaa ## About the Role The ideal candidate brings strong Java expertise, deep knowledge of cloud-native engineering practices, and experience deploying resilient services in production. We are also seeking engineers who actively leverage AI-assisted development tools to accelerate delivery, improve code quality, and drive engineering efficiency., * Bachelor's degree in Computer Science, Engineering, or related technical field (or equivalent practical experience), * 7+ years in backend or platform engineering, primarily using Java (8+) * Proven experience building and scaling RESTful APIs * Strong understanding of microservice architecture, event-driven systems, and distributed service orchestration * Experience with cloud platforms (AWS, Azure, or equivalent) * Hands-on experience with CI/CD pipelines, automated testing, and API monitoring * Proficiency with NoSQL (MongoDB, Cassandra) and relational databases * Strong knowledge of security best practices (OAuth, HTTPS, token lifecycle management) * Ability to debug production issues, create monitoring/alerting, and own services end-to-end * Demonstrated experience using AI-based engineering tools (e.g., GitHub Copilot, code assistants, automated testing frameworks, AI-driven debugging or triage) to enhance developer productivity Preferred Skills * Experience building APIs used by mobile clients * Familiarity with Kafka or event-streaming platforms * Knowledge of Docker, Kubernetes, and container orchestration * Experience with geolocation, personalization, or session management systems * Exposure to analytics tools, observability platforms (Splunk, Datadog), or APM technologies * Experience developing or integrating AI/ML-powered features or developer workflows Licenses and Certifications: * At least 18 years of age * Legally authorized to work in the United States ## Description We are looking for a highly skilled Senior Software Engineer to join the T-Life Backend Engineering team. This team builds and scales the core backend systems that power T-Mobile's customer-facing mobile experiences, including the T-Life app. In this role, you will develop Java-based microservices and APIs that support millions of users-enabling scalable, secure, AI-enhanced, and high-performance experiences across T-Mobile's digital ecosystem., Technical Engineering * Lead the design and development of scalable Java microservices supporting mobile feature delivery at high scale. * Build secure, reliable APIs consumed by iOS, Android, and web/internal systems. * Write clean, maintainable code backed by comprehensive unit, integration, and contract tests. * Ensure code meets high standards for performance, reliability, observability, and security. * Collaborate with system engineers to align backend data flows, service contracts, and integration patterns. * Provide mentorship and conduct regular code reviews to promote technical excellence. * Use AI-based development tools (e.g., AI pair programming, automated refactoring, intelligent code generation) to speed up development cycles, enhance code quality, and reduce manual effort. Innovation & Platform Maturity * Drive platform-level improvements in event streaming, configuration management, and service health visibility. * Explore and adopt emerging technologies, including AI-driven developer tooling, that reduce latency, simplify deployments, or enhance resilience. * Identify opportunities for refactoring or architecture modernization aligned with API-first, mobile-first principles. * Champion the use of AI for tasks such as documentation generation, test creation, triage automation, and code optimization. Cross-Functional Collaboration * Partner with mobile engineers to define backend contracts and troubleshoot client-service interactions. * Work closely with Product, QA, and UX teams to ensure backend APIs meet functionality and experience requirements. * Participate in PI planning, sprint ceremonies, and cross-functional release activities across the T-Life ecosystem. * Collaborate with teams to identify high-impact use cases for AI that improve delivery velocity and operational efficiency. Technical Documentation & Communication * Create clear, comprehensive technical documentation for backend services, API contracts, and architectural patterns. * Contribute to internal design documents, Confluence resources, and onboarding guides. * Leverage AI tools to assist in generating and maintaining high-quality documentation., A Senior Full Stack Engineer is needed to design and build the backend services and patient-facing applications that power an EHR-integrated care platform. This role involves worki… + 10 days ago, As a Software Engineer specializing in Clinical Data, you will play a crucial role in developing integration services that facilitate the movement of clinical data between electron… + 10 days ago + ## Related Videos - [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect) - [Leveraging Real time data in FSIs](https://www.wearedevelopers.com/videos/806-leveraging-real-time-data-in-fsis) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Unlocking the potential of Digital & IT at Vodafone](https://www.wearedevelopers.com/videos/602-unlocking-the-potential-of-digital-it-at-vodafone) - [Delay the AI Overlords: How OAuth and OpenFGA Can Keep Your AI Agents from Going Rogue](https://www.wearedevelopers.com/videos/1637-delay-the-ai-overlords-how-oauth-and-openfga-can-keep-your-ai-agents-from-going-rogue) - [Remote Driving on Plant Grounds with State-of-the-Art Cloud Technologies](https://www.wearedevelopers.com/videos/251-remote-driving-on-plant-grounds-with-state-of-the-art-cloud-technologies) ## Related Articles - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Best Countries for Software Engineers](https://www.wearedevelopers.com/magazine/267-best-countries-for-software-engineers) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs)