As America's Un-carrier, T-Mobile US, Inc. (NASDAQ: TMUS) is redefining the way consumers and businesses buy wireless services through leading product and service innovation. The company's advanced nationwide 4G and 4G LTE network delivers outstanding wireless experiences for customers who are unwilling to compromise on quality and value. Based in Bellevue, Washington, T-Mobile US provides services through its subsidiaries and operates its flagship brands, T-Mobile and MetroPCS. For more information, please visit http://w.t-mobile.comPrincipal Developer, Pipeline OnboardingSeeking a senior full-stack technologist with the initiative to strive for the best solution to challenging problems. Has the ability to work on complex challenges in a true team-oriented environment to lead and create enterprise applications. Enthusiastic about exciting opportunities to build sustainable products using agile and continuous delivery best practices. Well versed in techniques such as continuous delivery to establish faster feedback cycles.Minimum 10 Years Application Development Experience.Has had technical leadership experience large scale projects, providing leadership to junior developers on each project, with projects impacting multiple business units and with development timelines greater than 4 months each.Has experience mentoring other members of technical/development staff.Minimum 5 year experience in designing and developing applications on relational databases (MySQL, MS-SQL etc) as well as No-SQL (MongoDB, Cassandra etc).Minimum 5 years professional experience designing and developing applications on Linux / Windows and designing complex multi-tiered applications.Has experience working with business applications/systems and has also provided tier 4 production support.The following technologies are not all mandatory, but the more coverage the more desirable the candidate.Programming Languages: Java (mandatory), Objective-C, C# JavaScript (Angular.js, React.js, ReactNative.js, Node.js, JQuery, etc), Ruby, XML, HTML5/CSS, Ansible, Platforms: Rails, Spring, J2EE, Axon (CQRS), DockerDatabases: MySQL, Oracle, JDBC, MongoDB, PostgresTesting tools: Cucumber, RSpec, IWebDriver, Appium, Frank, CalabashBuild tools: IntelliJ, Eclipse, JUnit, Jenkins SonarQube, Artifactory, Subversion, Git, Mockito, Selenium, Rake, Ant, Maven, GradleServers: Play Framework, Apache Tomcat, Websphere, DropwizardMethodologies: Continuous Delivery, Continuous Integration, DevOps, Agile, XP, Test-driven development, Micro-services cloud native software development, REST APIsEducation -Minimum RequiredB.S. Computer Science or Management Information Systems. Equivalent experience may be considered in lieu of a degree.Excellent verbal and written communication skillsAttention to detail, ability to multi-task, reliability, perseverance, patience, and flexibility are a mustMust enjoy working in a high pressure and fast paced environmentMaintain a high degree of self-motivation and independent decision-makingExperience in writing applications in both waterfall and agile methodology.Ability to read and understand a variety of code, recognize behavioral and coding patterns, integration points, and help software scrum teams of all maturity levels get on board on the continuous delivery pipeline. Excellent soft skills around communications, empathy, cross-functional collaboration and seeking a win-win partnership with all stakeholders.Goal-oriented: Thrives and enjoys in accomplishing set mission and objectives. Takes pride in creating elegant software solutions.Experience in writing API-based microservices applications designed for cloud native platforms (containers, PaaS, cloud foundry)Practices security best practices in programming such as rugged programming principles, writing secure code.Experiencec in replatforming code, code refactoring and ideally in tranforming monolith applications to micro-services based applications.Micro-services software design, using REST APIs, clear contracts, Belief that test code is as important as functional code.Well versed in CI/CD methodology and employs and evangelizes continuous delivery best practices.Experience working in a true DevOps team, owning and supporting the code he/she writes. Not afraid to hold the pager during rotationLoves to learn and keep up to date with the latest SW development methodlogy, tools, technologies and principlesWe Take Equal Opportunity Seriously - By Choice T-Mobile USA, Inc. is an Equal Opportunity Employer. All decisions concerning the employment relationship will be made without regard to age, race, color, religion, creed, sex, sexual orientation, gender identity or expression, national origin, marital 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 or harassment based upon any of these factors is wholly inconsistent with our Company values and will not be tolerated. Furthermore, such discrimination or harassment may violate federal, state, or local law.

Apply For This Job