Principal Engineer, Cybersecurity - Data Loss Prevention

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!This role is critical to protecting T-Mobile’s digital assets by designing, implementing, and strengthening data protection capabilities across software, systems, cloud platforms, endpoints, and infrastructure. The role requires a strong understanding of how data is created, classified, managed, stored, accessed, transmitted, and retained across the enterprise, as well as the ability to identify risk and recommend practical remediation strategies. The individual will conduct security assessments, evaluate data protection gaps, and partner with engineering, technology, and business teams to implement scalable controls across mobile devices, cloud services, networks, and enterprise applications. Experience with Microsoft Purview is required, along with broader knowledge of leading data loss prevention, data security, and cybersecurity technologies. The ideal candidate will also bring insight into emerging AI security practices, including risks associated with sensitive data used by generative AI and machine learning applications, and provide informed recommendations on tools, controls, and operating practices that support T-Mobile’s evolving security journey. Success will be measured by the effectiveness of security controls, reduction of data exposure and vulnerabilities, and the ability to drive timely, sustainable remediation of data protection risks.Job ResponsibilitiesConducts security assessments and testing to identify and mitigate risks within current security tools, current AI, and emerging AI Architects proactive security measures and strategies to enhance the security posture across various technologies including Microsoft Purview, Zscaler, and Island Browser Collaborates with engineering teams to integrate security practices into data posture, data security, and implementation guidelines Serves as an authority in cybersecurity, providing guidance and leadership to various business units Drives strategic security initiatives to protect against cyber threats and ensure compliance with security standardsEvaluates new technologies and processes for potential security vulnerabilities and recommends corrective actionsAlso responsible for other duties/projects as assigned by business management as neededEducation and Work ExperienceBachelor's Degree plus 7 years of related work experience OR Advanced degree with 5 years of related experience (Required)Acceptable areas of study include Computer Science or Information Technology. (Required)7-10 years Conducting security assessments and vulnerability testing to identify and mitigate risks in digital environments (Preferred)7-10 years Developing and implementing cybersecurity measures across various technologies including mobile and IoT devices, cloud services, and network technologies (Preferred)7-10 years Leading and collaborating with engineering teams to enhance security postures and strategic cybersecurity initiatives (Preferred)Required Knowledge, Skills and AbilitiesArtificial Intelligence (AI)CybersecurityEscalation ManagementSecurity AutomationSecurity EngineeringSecurity Incident ManagementStakeholder ManagementThreat ModelingLicenses and CertificationsCertified Information Systems Security Professional (CISSP) (Preferred)Certified Information Security Manager (CISM) (Preferred)Certified in Risk & Informational Systems Control (CRISC) (Preferred)At least 18 years of ageLegally authorized to work in the United StatesT-Mobile requires U.S. citizenship for certain roles within the organization. This role requires U.S. citizenship. Individuals hired into this role will be required to submit documentation proving U.S. citizenship within the first 7 days of hire - failure to do so will result in termination.Travel:Travel Required (Yes/No): NoDOT Regulated:DOT Regulated Position (Yes/No): NoSafety Sensitive Position (Yes/No): No***The base pay range below is the National Pay Range - to find out the range for the location listed, please click on the link in the second paragraph below.*****Base Pay Range: $127,800 - $230,700Corporate Bonus Target: 20%The pay range above is the general base pay range for a successful candidate in the role. The successful candidate’s actual pay will be based on various factors, such as work location, qualifications, and experience, so the actual starting pay will vary within this range.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. To find the pay range for this role based on hiring location, 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 .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!T-Mobile USA, Inc. is an Equal Opportunity Employer. All decisions concerning the employment relationship will be made without regard to age, race, ethnicity, color, religion, creed, sex, sexual orientation, gender identity or expression, national origin, religious affiliation, marital status, citizenship 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, retaliation or harassment based upon any of these factors is wholly inconsistent with how we do business and will not be tolerated.Talent comes in all forms at the Un-carrier. If you are an individual with a disability and need reasonable accommodation at any point in the application or interview process, please let us know by emailing View email address on click.appcast.io or calling View phone number on click.appcast.io. Please note, this contact channel is not a means to apply for or inquire about a position and we are unable to respond to non-accommodation related requests.SummaryLocation: Frisco, Texas; Overland Park, Kansas; Bellevue, WashingtonType: Full timePosted: 2026-08-03Country: United States of AmericaRequisition: REQ364052Posting ID: 70353304ce67102109f5033b8eb70000