Principal Full Stack Cybersecurity Engineer

Company: T-Mobile USA, Inc.
Location: Bellevue
Posted on: May 1, 2025

Job Description:

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!

Advertising, meet the Un-carrier. We are standing up for Consumers and Advertisers to redefine an industry. Again. Ever feel like relevant, engaging, and safe advertising is an impossible ask? We are working to change that by building an advertising platform that allows brands and advertising agencies to engage real audiences with a customer-centric, privacy first approach.

This is not a product internal to T-Mobile; but one that is used by all the major advertising agencies in the United States and many of the top consumer product brands. Our team builds the enabling technology behind this revolution. We are a fast-moving team that builds, runs, and operates the T-Mobile Advertising Solutions platforms, including our audience building, rideshare, and retail media network solutions.

If you enjoy working with teams to enhance the security of their applications one day, writing full stack code the next, and wrapping up your week writing infrastructure as code to deploy changes to the cloud we want to talk to you. We are looking for team members who can critically analyze a problem, collaborate with software and security teams to find a solution, and own the delivery of that solution.

The Principal Full Stack DevSecOps Engineer will work with software engineers and teams to design, implement, and deploy complete systems, ensuring they meet cybersecurity requirements and best practices. The engineer will bring a security first focus to the creation, maintenance, and enhancement of full stack software products that typically include front end web frameworks, back-end services, micro services, databases, and all associated cloud infrastructure required to deploy and maintain the solution. This engineer will help ensure that our software, systems and infrastructure are designed and implemented to the highest security standards. By serving as a point of contact to Cybersecurity teams, performing technical security assessments, code reviews and vulnerability testing, they will highlight risk and remediate associated findings while helping T-Mobile teams and partners improve security.

Job Responsibilities:

• Interface with groups including Cybersecurity, application support, engineering ops, privacy.
• Perform security analysis of existing and new technologies and form recommendations on their use.
• Lead the identification of security needs & recommends plans/resolutions.
• Leads information security reviews of Engineering projects and proposals.
• Executes security projects driven by groups both internal and external to Engineering teams.
• Mentor peers and junior team members on security technologies, solution design, and customer interaction.
  
  Education:
  
  • Bachelor's Degree Computer Science or Engineering (Required)
    
    Work Experience:
    
    • 7-10 years working with databases from design to production
    • 3+ years DevOps experience with infrastructure as code (Required)
    • 4-7 years using cloud services from AWS, Azure or GCP (Required)
    • 7-10 years technical engineering experience (Required)
    • 1+ years coaching and mentoring team members (Preferred)
    • 7-10 years in full stack development, including front end and back end technologies (bonus)
      
      Knowledge, Skills and Abilities:
      
      • Proficiency in setting up full-stack environments from scratch, including build steps and backend infrastructure.
      • Deep knowledge of at least one structured and one scripting language Comprehensive understanding of infrastructure parameters, configurations, and security.
        
        --- At least 18 years of age
        --- Legally authorized to work in the United States
        
        Travel:
        Travel Required (Yes/No):Yes
        
        DOT Regulated:
        DOT Regulated Position (Yes/No):No
        Safety Sensitive Position (Yes/No):No
        
        Base Pay Range: $129,400 - $233,400
        
        Corporate 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, click here .
        
        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!
        
        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 ApplicantAccommodation@t-mobile.com or calling 1-844-873-9500 . 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.

Keywords: T-Mobile USA, Inc., Bellevue , Principal Full Stack Cybersecurity Engineer, Education / Teaching , Bellevue, Washington