Senior Penetration Tester

General information

Requisition # R66494 Locations USA-AZ-Chandler Posting Date 03/10/2026 Security Clearance Required Secret Remote Type Onsite Time Type Full time

Description & Requirements

Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we’ve been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now—unleash your potential with MANTECH!

***This is for a future opportunity***

MANTECH seeks a motivated, career, and team-oriented Senior Penetration Tester to support a DHS customer in Chandler, AZ OR the National Capital Region.

As part of this mission, you will help the organization maintain its prestigious designation as a Cybersecurity Service Provider (CSP) and Center of Excellence (COE). Our team provides comprehensive, 24/7/365 security services supporting an expansive network across LANs, WANs, and advanced Cloud-based infrastructures. This is a unique opportunity to utilize a "kill chain" process to thwart Advanced Persistent Threats (APT) and implement cutting-edge technologies like Zero Trust Architecture, AI/ML risk mitigation, and Post-Quantum Computing readiness.

Responsibilities include but are not limited to:

• Conduct continuous penetration testing on ICE FISMA systems, mobile devices, and IoT.

• Perform Red Team engagements and support Purple Team remediation verification.

• Execute High Value Asset (HVA) Assessments and social engineering tests.

• Develop and follow security testing Rules of Engagement (ROE).

• Support the organization's status as a Cybersecurity Service Provider (CSP) through active testing.

Minimum Qualifications:

• Bachelor's Degree.

• 5+ years of penetration testing experience.

• Must have GPEN or GXPN AND one of: GRTP, CRTL, OSCP, CMWAPT, CEPT, CPT, or LPT

• Ability to obtain CISA AES HVA Assessment Lead or Technical Lead certification.

Preferred Qualifications:

• Experience with Cloud technology (IaaS/SaaS/PaaS) and NSA Red Team certification.

• Experience with post-quantum computing assessment/implementation  

Clearance Requirements

• Must be a U.S. Citizen.

• Active Secret clearance.

• Must be able to obtain and maintain an ICE Entry on Duty (EOD) Suitability.

Physical Requirements:

• Must be able to remain in a stationary position 50% of the time.

• Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers and customers.

MANTECH consid