At T-Mobile, we invest in YOU! Our Total Rewards Package ensures that employees get the same big love we give our customers. All team members receive a competitive base salary and compensation package - this is Total Rewards. Employees enjoy multiple wealth-building opportunities through our annual stock grant, employee stock purchase plan, 401(k), and access to free, year-round money coaches. That's how we're UNSTOPPABLE for our employees! We are looking for a Principal Engineer to help T-Mobile deliver the next generation of the T-Mobile mobile application. We want you to work with business partners and deliver exciting mobile experiences to our customers. We value skills delivering and working with Open-Source tools and infrastructure. You are resolved, work well in a team, have extraordinary communication skills, and bring groundbreaking skills on mobile technology to T-Mobile. The Principal Engineer is responsible for designing/coding creative and scalable systems and software solutions that address business/technical needs in a constantly evolving market. You will define and maintain architecture and technology standard processes for mobile apps. In addition, you will provide guidance and direction to project teams to ensure compliance with standards and evaluate and recommend technologies and techniques for applicability to T-Mobile systems. We pride ourselves on encouraging a culture of innovation, advocating for agile methodologies, and promoting transparency in all that we do. Join us in embodying the spirit of the 'Un-carrier' and make a tangible impact! Our team is dynamic where no day is the same, and we are diverse and inclusive passionate about growth and transformation. If you're up to the challenge, apply today!