Principal Cybersecurity Engineer, Telco

T-Mobile; Bellevue (WA); On-site; USD 127,800 - 230,700; Full time

Benefits offered by this job

Medical, dental, and vision insurance

401(k) plan

Employee stock grants and purchase plan

Paid Time Off (PTO)

Job summary

T-Mobile is looking for a cybersecurity expert to secure telecommunications technologies such as 3GPP, IMS, and 5G networks while implementing robust security practices. The role involves collaborating with cross-functional teams to assess and mitigate risks, ensuring a secure environment for mission-critical applications.

Candidates should have a Bachelor's degree in Computer Science or a related field with substantial experience in cybersecurity measures and security assessments. This position offers competitive compensation and a comprehensive benefits package.

Qualifications

• Bachelor's degree with 7 years of related work experience OR an advanced degree with 5 years of work experience.
• Experience in conducting security assessments and implementing cybersecurity measures.
• Proven expertise in security automation and incident management.

Responsibilities

• Conduct security assessments and vulnerability testing.
• Develop proactive security measures across various technologies.
• Collaborate with engineering teams to integrate security practices.

Skills

3GPP standards

5G architecture

Cybersecurity

Security Engineering

Threat Modeling

Education

Bachelor's Degree in Computer Science or Information Technology

Tools

CISSP

CISM

CRISC

Job description

Overview

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 involves securing critical telecommunications technologies, including 3GPP standards, IMS, packet core, messaging, e911, and 5G networks, while leveraging modern practices like zero-trust architecture, containerization, and advanced threat detection. The engineer collaborates with cross-functional teams to assess and mitigate risks, ensuring a secure environment for enterprise applications, IoT, mobile devices, and next-generation networks. The role works with engineering teams to implement security measures for technologies including mobile devices, cloud services, and networks. Success is measured by the effectiveness of security controls and the reduction of vulnerabilities. The work enhances organizational resilience against cyber threats and safeguards critical business operations and customer data.

Job Responsibilities

• Conducts security assessments, code reviews, and vulnerability testing to identify and mitigate risks
• Develops proactive security measures and strategies to enhance the security posture across various technologies
• Collaborates with engineering teams to integrate security practices into software development and deployment processes
• Serves as a subject matter expert in cybersecurity, providing guidance and leadership to various business units
• Ensures the security of 3GPP-compliant systems, including LTE, 5G, and IMS core networks
• Evaluates new technologies and processes for potential security vulnerabilities and recommends corrective actions
• Develops and implements cybersecurity solutions for packet core infrastructure, including EPC, UPF, and related network elements
• Drives strategic security initiatives to protect against cyber threats and ensure compliance with security standards
• Leads security design and implementation for critical services like e911, VoLTE, RCS messaging, and SMS/MMS platforms
• Secures signaling protocols (e.g., Diameter, SIP, HTTP/2) and mitigate risks such as signaling fraud, DoS attacks, and SS7 vulnerabilities
• Also responsible for other duties/projects as assigned by business management as needed

Education and Work Experience

• Bachelor\'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, e911, VoLTE, IMS Core and RAN. (Preferred)
• 7-10 years Leading and collaborating with engineering teams to enhance security postures and strategic cybersecurity initiatives (Preferred)

Knowledge, Skills and Abilities

• Proven expertise in 3GPP standards, 5G architecture, IMS core, and packet core security.
• AI (Required)
• Cybersecurity (Required)
• Escalation Management (Required)
• Security Automation (Required)
• Security Engineering (Required)
• Security Incident Management (Required)
• Stakeholder Management (Required)
• Threat Modeling (Required)

Licenses and Certifications

• CISSP (Preferred)
• CISM (Preferred)
• CRISC (Preferred)
• 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

Safety Sensitive Position (Yes/No): No

Compensation

Base Pay Range: $127,800 - $230,700

Corporate Bonus Target: 20%

Pay ranges vary by location: Bellevue, WA: $166,300 to $224,900; Frisco, TX: $147,700 to $199,900; Overland Park, KS: $139,200 to $188,400

The pay range above is the general base pay range for a successful candidate in the role. The actual starting pay will be based on location, qualifications, and experience. Eligible employees may receive an annual bonus or other incentives based on company or individual performance, as described in company policy.

Benefits

Full and part-time employees have access to benefits including medical, dental, and vision insurance, flexible spending, 401(k), employee stock grants and purchase plan, PTO, holidays, parental and family leave, family-building benefits, and other protections. Additional programs include mobile service and home internet discounts, pet insurance, and commuter benefits. For details, visit www.t-mobilebenefits.com.

Never stop growing! By applying for this career opportunity, you’re living our values while investing in your career growth. You’re unstoppable!

T-Mobile USA, Inc. is an Equal Opportunity Employer. All decisions concerning the employment relationship will be made without regard to protected characteristics as defined by law. If you need reasonable accommodation at any point in the application or interview process, please email [e-mail] or call 1-844-873-9500.