Principal Engineers, Software located in Bellevue, WA will understand system protocols, how systems operate and data flows.

• Independently develop a full mobile app software stack with test automation.
• Conduct independent research into new technologies and software stacks.
• Drive engineering projects by developing software solutions, conducting tests and inspections, prepare reports and calculations.
• Contribute to designs to implement new ideas which improve an existing and new system, process and service.
• Review existing designs and processes to highlight more efficient ways to complete existing workload more effectively through industry perspectives.
• Write basic documentation on how technology works.
• Document systems designs, presentations, and business requirements for consumption and consideration at the manager level.
• Collaborate with technical teams and utilize system expertise to deliver technical solutions.
• Contribute to the development of others through mentoring or in house workshops and learning sessions, growing mid-level and associate engineers.
• Contribute to new and existing technology options that support business goals.
• Telecommuting is permitted, but applicant must work from the worksite location at least 3-4 days per week.
• No additional national or international travel is anticipated.

Skill requirements:

• (1) Working in Android App Development projects with a strong focus on architecture and design;
• (2) Using Kotlin, Jetpack libraries, and Compose for building modern, efficient, and scalable Android applications;
• (3) Working with IoT protocols, SignalR technologies, and integrating IoT devices with mobile applications;
• (4) Leading a development team, providing technical guidance, and ensuring adherence to best practices in Android development and IoT integration;
• (5) Leading Android development, overseeing and guiding iOS development efforts, ensuring seamless integration and consistent user experiences across platforms; and
• (6) Understanding of mobile app security best practices, including data encryption, secure communication protocols, and threat mitigation strategies to protect user data and ensure app integrity.

Experience and education requirements:

PRIMARY REQUIREMENTS: Master's Degree in Computer Science, Software Development, Information Systems or its foreign equivalent, and 5 years of relevant work experience.

ALTERNATIVE REQUIREMENTS: Bachelor's Degree in Computer Science, Software Development, Information Systems or its foreign equivalent, and 7 years of relevant work experience.

• At least 18 years of age
• Legally authorized to work in the United States

Travel:
Travel Required (Yes/No): No

DOT Regulated:
DOT Regulated Position (Yes/No): No
Safety Sensitive Position (Yes/No): No

Candidate's pay will be based on various factors, such as work location, qualifications, and experience. At T-Mobile, employees in regular, non-temporary roles are eligible for an annual bonus or periodic sales incentive or bonus, based on their role. Most Corporate employees are eligible for a year-end bonus based on company and/or individual performance and which is set at a percentage of the employee's eligible earnings in the prior year. Certain positions in Customer Care are eligible for monthly bonuses based on individual and/or team performance.

At T-Mobile, our benefits exemplify the spirit of One Team, Together! A big part of how we care for one another is working to ensure our benefits evolve to meet the needs of our team members. Full and part-time employees have access to the same benefits when eligible. We cover all of the bases, offering medical, dental and vision insurance, a flexible spending account, 401(k), employee stock grants, employee stock purchase plan, paid time off and up to 12 paid holidays - which total about 4 weeks for new full-time employees and about 2.5 weeks for new part-time employees annually - paid parental and family leave, family building benefits, back-up care, enhanced family support, childcare subsidy, tuition assistance, college coaching, short- and long-term disability, voluntary AD&D coverage, voluntary accident coverage, voluntary life insurance, voluntary disability insurance, and voluntary long-term care insurance. We don't stop there - eligible employees can also receive mobile service & home internet discounts, pet insurance, and access to commuter and transit programs! To learn about T-Mobile's amazing benefits, check out www.t-mobilebenefits.com.

Never stop growing!
As part of the T-Mobile team, you know the Un-carrier doesn't have a corporate ladder-it's more like a jungle gym of possibilities! We love helping our employees grow in their careers, because it's that shared drive to aim high that drives our business and our culture forward. By applying for this career opportunity, you're living our values while investing in your career growth-and we applaud it. You're unstoppable!