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Featured Employers

Penetration Tester - TS/SCI with Polygraph

Company: General Dynamics IT
Location: Bethesda, MD
Employment Type: Full Time
Date Posted: 08/29/2026
Job Categories: Engineering, Information Technology

Job Description

Penetration Tester - TS/SCI with Polygraph
OWN YOUR OPPORTUNITYExplore a career in cyber at GDIT and youll find endless opportunities to grow alongside colleagues who share your focus on defending and protecting what matters. Advance how our customers operate while you advance your career. Join GDIT as an Ethical Hacker/Penetration Tester Sr Principal and build an impactful career in enterprise IT, collaborating with people who are driven and resourceful like you.MEANINGFUL WORK AND PERSONAL IMPACTConduct internal penetration testing and vulnerability assessment of servers, web applications, web services, and databasesManually exploit and compromise operating systems, web applications, and databasesExamine results of web/OS scanners, scans and static source code analysisIdentify vulnerabilities, misconfigurations, and compliance issuesWrite final reports, defend all findings to include the risk or vulnerability, mitigation strategies, and referencesAbility to meet and coordinate with various audiences to include developers, system administrators, project managers, and senior government stakeholdersProvide security recommendations for developers, system administrators, project managers, and senior government stakeholdersReport vulnerabilities identified during security assessmentsWrite penetration testing Rules of Engagements (RoE), Test Plans, and Standard Operating Procedures (SOP)Conduct security reviews, technical research, and provided reporting to increase security defense mechanismsMake recommendations to the IC CISO or designee for improving TTPS for better cyber threat protection. WHAT YOULL NEED TO SUCCEEDBring your technology expertise and drive for innovation to GDIT. The Ethical Hacker/Penetration Tester Sr Principal must have:Education: Bachelors degree in computer engineering, Computer Science, Electrical Engineering, Information systems, Information Technology, Cybersecurity, or a closely related discipline.A Masters degree in an applicable discipline be substituted for three years of demonstrated work experienceExperience: 8+ years of related experienceSecurity clearance level: TS/SCI with PolygraphUS citizenship required DESIRED SKILLSCertifications: CEH Certified Ethical Hacker Certification, CPT Certified Penetration TesterStrong writing skillsExperience with NIST 800-53 and Risk Management FrameworkKnowledge of system and application security threats and vulnerabilitiesKnowledge of network access, identity, and access management e.g. public key infrastructure (PKI).Knowledge of network protocols such as Transition Control Protocol/Internet Protocol (TCP/IP), Dynamic Host Configuration, Domain Name System (DNS), and directory Services.Ability to assess the robustness of security systems and designs.Knowledge of cybersecurity principles and organizational requirements (relevant to confidentiality, integrity, availability, authentication, non-repudiation).Write final reports and defend all findings, including risk or vulnerability, mitigation strategies, and references.Report vulnerabilities identified during security assessments.Conducted security reviews, technical research and provided reporting to increase security defense mechanisms.Travel Domestic 0-25%. GDIT IS YOUR PLACEAt GDIT, the mission is our purpose, and our people are at the center of everything we do.Growth: AI-powered career tool that identifies career steps and learning opportunitiesSupport: An internal mobility team focused on helping you achieve your career goalsRewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time offCommunity: Award-winning culture of innovation and a military-friendly workplace #WeAreGDIT#JET#VA_2026Alumni