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T-Mobile Logo

Principal Engineer, Full Stack Cybersecurity

T-Mobile

$129,400 - $233,400
Sep 17, 2025
Bellevue, WA, US
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T-Mobile is building an advertising platform that allows brands and advertising agencies to engage real audiences with a customer-centric, privacy-first approach. The Senior Full Stack Cybersecurity Engineer will work with software engineers and teams to design, implement, and deploy complete systems, ensuring they meet cybersecurity requirements and best practices.

Requirements

  • 5+ years full stack web development experience including front and back end.
  • Experience in security and risk assessments, threat modeling, and compliance.
  • Experience in incident response and vulnerability remediation.
  • 5+ years designing database schemas, writing SQL.
  • 2+ year DevOps experience with infrastructure as code.
  • 3+ years using cloud services from AWS, Azure or GCP.
  • 4+ years software engineering experience.

Responsibilities

  • Design new infrastructure and monitor existing systems to ensure security compliance.
  • Work with engineers to develop full-stack web solutions with a focus on security.
  • Advise engineering teams on security, compliance, and risk assessments.
  • Interface with groups including Cybersecurity, application support, engineering ops, privacy.
  • Perform security analysis of existing and new technologies and form recommendations on their use.
  • Propose and implement improvements to enhance existing systems and processes.
  • Implements, tests & monitors info security improvements.

Other

  • Bachelor's Degree Computer Science or Engineering (Required)
  • At least 18 years of age
  • Mentor peers and junior team members in security technologies, enterprise solution design and facilitation and effective customer interaction.
  • Participate in design reviews, architecture discussions, and code reviews.