Principal Cybersecurity Engineer

*MANTECH* seeks a motivated, career, and team-oriented *Principal Cybersecurity Engineer* to support a major federal homeland security program in *Washington, DC* or *Chandler, AZ*. As part of this mission, you will serve as a senior technical authority driving enterprise-wide threat defense, operational resilience, and advanced security analytics. This is a unique opportunity to mature security operations for a large-scale federal SOC, leveraging continuous threat exposure models, zero trust principles, and next-generation security automation. *Key Responsibilities:* * Implement, optimize, and tune comprehensive offensive and defensive security capabilities across complex, enterprise-scale environments. * Lead end-to-end incident handling, including scoping, timeline reconstruction, root cause analysis, and impact assessment across cloud, network, endpoint, and mobile infrastructures. * Perform static and dynamic malware reverse engineering (sandboxing, code analysis) to extract Indicators of Compromise (IOCs) and analyze C2 infrastructure. * Align security architecture, detection tools, and incident telemetry with MITRE ATT&CK and D3FEND frameworks. * Correlate digital forensics findings with threat intelligence, SOC alerts, and adversary Tactics, Techniques, and Procedures (TTPs). * Provide expert guidance on network security architecture, operating system hardening, and multi-cloud security posture management. *Minimum Qualifications:* * Bachelor’s Degree in Cybersecurity, Computer Science, Information Technology, or a related field. * Minimum of 5 years of specialized cybersecurity experience in enterprise or federal SOC environments. * Must hold at least *ONE* primary certification: CISSP (or Associate), CCSP, SSCP, GMON, GCIH, GCIA, CEH, or CASP+. * Must hold at least *ONE* secondary certification from the DoD 8140 CSSP Analyst, Infrastructure Support, or Incident Responder list. * Demonstrated hands-on experience with security event correlation tools, digital forensics, and binary analysis. *Preferred Qualifications:* * Master’s Degree in a technical discipline. * Direct experience supporting federal cyber defense operations (DHS, DoD, or IC). * Practical knowledge of Zero Trust Architecture (ZTA) implementation and cloud-native security controls. *Clearance Requirements:* * Active Secret Clearance required; must be eligible to obtain and maintain a Top Secret/SCI Clearance. * Must be a U.S. Citizen and able to obtain and maintain agency suitability/EOD prior to starting. *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.