NewSenior Reverse Engineer GliaCell TechnologiesSenior Reverse EngineerLaurel, MD$200,000–$280,000 / yearWe also provide customer solutions in the areas of CND, CNE, and CNO by providing our customers with assessments and solutions in Threat Mitigation, Vulnerability Exposure, Penetration Testing, Threat Hunting, and Preventing Advanced Persistent Threat. Further, you have skill or background in being able to perform analyst related tasks to support your own: RE efforts, development tasks and helping the teams you support better analyze their own projects.
NewInformation Systems Security Engineer System OneInformation Systems Security EngineerClarksburg, MD$180,000 / yearYou’ll be hands-on with the Risk Management Framework (RMF), Assessment & Authorization (A&A), ATO sustainment, control validation, continuous monitoring, and vulnerability/stig compliance efforts—partnering closely with security and technical teams. In this role, you’ll help build, secure, and maintain systems by applying cybersecurity engineering best practices across design, implementation, authorization, and ongoing compliance.
Penetration Tester - Cyber Engineer CACI International Inc.Penetration Tester - Cyber EngineerAberdeen Proving Ground, MD$90,300–$189,600 / yearDesired:- Active TS/SCI- Certifications such as OSCP, OSCE, GPEN, GWAPT, GXPN, CEH, or CISSP- Experience in malware analysis or digital computer forensics- Scripting skills in Bash, Python, Perl, or Ruby- Systems programming experience- Keen interest in emerging penetration testing technologies and techniques- Familiarity with Android operating systems- Knowledge of UAS/UXS technologies- Understanding of radios and radio protocols- Experience analyzing embedded devices. Pay Range: There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications.
Senior ISSE/Penetration Tester TS/SCI Polygraph LeidosSenior ISSE/Penetration Tester TS/SCI PolygraphAnnapolis Junction, MarylandThe selected candidate will have a range of day-to-day responsibilities across multiple activities, including the following: Validating and verifying system security requirements and establishing system security designs for large-scale systems, major system elements, and interfacing systems that are part of a large complex network environment with geographically distributed components. April 28, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
Penetration Tester - Cyber Engineer CACIPenetration Tester - Cyber EngineerAberdeen Proving Ground, MarylandPay Range : There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. - Expertise in exploitation techniques including buffer overflows, fuzzing, SQL injection, Man-in-the-Middle attacks, covert channels, secure tunneling, XSS, privilege escalation, and lateral movement.
Senior Isse/Penetration Tester Ts/Sci Polygraph Leidos Holdings Inc.Senior Isse/Penetration Tester Ts/Sci PolygraphAnnapolis Junction, MD$131,300–$237,350 / yearThe selected candidate will have a range of day-to-day responsibilities across multiple activities, including the following: Validating and verifying system security requirements and establishing system security designs for large-scale systems, major system elements, and interfacing systems that are part of a large complex network environment with geographically distributed components. Must have experience developing and implementing integrated security services management processes, such as assessing and auditing network penetration testing, anti-virus planning assistance, risk analysis, and incident response.
Senior ISSE/Penetration Tester TS/SCI Polygraph Leidos Holdings IncSenior ISSE/Penetration Tester TS/SCI PolygraphAnnapolis Junction, MD$131,300–$237,350 / yearThe selected candidate will have a range of day-to-day responsibilities across multiple activities, including the following: Validating and verifying system security requirements and establishing system security designs for large-scale systems, major system elements, and interfacing systems that are part of a large complex network environment with geographically distributed components. Must have experience developing and implementing integrated security services management processes, such as assessing and auditing network penetration testing, anti-virus planning assistance, risk analysis, and incident response.
Penetration Tester Booz Allen HamiltonPenetration TesterUsa, MarylandOffensive Security Certified Professional (OSCP), HTB Certified Penetration Tester Specialist (CPTS), eLearnSecurity Junior Penetration Tester (EJPT), GIAC Global Information Assurance Penetration Tester (GPEN), or GIAC Cloud Penetration Tester Certification. Onsite : If this position is listed as onsite, work will primarily be performed at a Booz Allen office or customer facility, where employees will collaborate directly with colleagues and customers as required by the role.
Senior Penetration Tester ClearFocus TechnologiesSenior Penetration TesterMarylandKey Responsibilities: Lead penetration testing engagements for web applications, external and internal networks, cloud environments, mobile applications, wireless networks, containers, and emerging technologies. This position performs advanced penetration testing, vulnerability assessments, security research, exploitation activities, and technical consulting across federal systems, applications, cloud environments, and networks.
Penetration Tester CymertekPenetration TesterAnnapolis Junction, MarylandCybersecurity, Computer Science, Information Technology, Information Security, Network Security, Systems Engineering, Computer Engineering, Digital Forensics, Ethical Hacking, Data Science, Electrical Engineering, Software Engineering, etc. Ethical Hacker, Vulnerability Analyst, Security Consultant, Red Team Specialist, Cybersecurity Analyst, Application Security Tester, Security Engineer, Offensive Security Engineer, Security Assessment Specialist, Cyber Threat Analyst, Exploit Developer, etc.
Penetration Tester / Ethical Hacker CyberLinx SolutionsPenetration Tester / Ethical HackerFort Meade, MarylandCyberLinx Solutions, LLC is seeking a Penetration Tester / Ethical Hacker to proactively identify security weaknesses through controlled and authorized simulated attacks on systems, networks, and applications. This role is critical in helping organizations understand their security posture by uncovering exploitable vulnerabilities and demonstrating real-world attack scenarios.
Junior Penetration Tester - Cyber Engineer CACI International IncJunior Penetration Tester - Cyber EngineerAberdeen Proving Ground, MD$76,000–$155,700 / yearPay Range: There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Expertise in exploitation techniques including buffer overflows, fuzzing, SQL injection, Man-in-the-Middle attacks, covert channels, secure tunneling, XSS, privilege escalation, and lateral movement.
NewPenetration Tester - TS/SCI with Polygraph General Dynamics Information TechnologyPenetration Tester - TS/SCI with PolygraphBethesda, MarylandThe Ethical Hacker/Penetration Tester Sr Principal must have: Education: Bachelor’s degree in computer engineering, Computer Science, Electrical Engineering, Information systems, Information Technology, Cybersecurity, or a closely related discipline. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available.
Penetration Tester with Splunk ManTech International CorpPenetration Tester with SplunkFort Meade, MD$141,500–$236,000 / yearThere are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. Minimum Qualifications: Bachelor of Science degree in Computer Science, Electrical Engineering, Computer Engineering, Physics or similar technical field and 10 years of penetration testing experience.
Junior Penetration Tester - Cyber Engineer CACIJunior Penetration Tester - Cyber EngineerAberdeen Proving Ground, MarylandPay Range : There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. - Expertise in exploitation techniques including buffer overflows, fuzzing, SQL injection, Man-in-the-Middle attacks, covert channels, secure tunneling, XSS, privilege escalation, and lateral movement.
Penetration Tester ManTechPenetration TesterFort Meade, MDBachelor of Science degree in Computer Science, Electrical Engineering, Computer Engineering, Physics or similar technical field and 10 years of penetration testing experience. + Lead the information assurance evaluation of target systems, including developing threat models, conducting security analysis and testing, demonstrating vulnerabilities and documenting the results.
Cyber Vulnerability Analyst - Penetration Tester Parsons CorpCyber Vulnerability Analyst - Penetration TesterAnnapolis Junction, MD$134,100–$241,400 / yearIn this role you will be responsible for simulating adversary tactics and working with other threat analyst team members to inform the proactive identification of cyber threats with the goal to prevent and eradicate threats to critical U.S. systems. We promote a culture of excellence and close-knit teams that take pride in delivering, protecting, and sustaining our nation''s most critical assets, from Earth to cyberspace.
Pentest Operator GuidehousePentest OperatorBeltsville, MarylandThe Pentest Operator will support and lead pentesting engagements on High Value Asset (HVA) systems and enterprise security assessments, helping clients understand real-world attack paths, validate defensive controls, and prioritize remediation activities based on mission risk. The role includes internal and external network testing, web application testing, Active Directory assessment, adversary emulation, red team and purple team activities, vulnerability validation and reporting, and developing and presenting executive-level out-briefs.
Pentest Operator Guidehouse IncPentest OperatorBeltsville, MD$113,000–$188,000 / yearWhat You Will Do: The Pentest Operator will support and lead pentesting engagements on High Value Asset (HVA) systems and enterprise security assessments, helping clients understand real-world attack paths, validate defensive controls, and prioritize remediation activities based on mission risk. The role includes internal and external network testing, web application testing, Active Directory assessment, adversary emulation, red team and purple team activities, vulnerability validation and reporting, and developing and presenting executive-level out-briefs.
Systems Security Specialist (Senior) ExpediteInfoTech, IncSystems Security Specialist (Senior)Rockville, MDOur clients include the US Department of Education, US Department of Transportation, US Department of Justice, US Department of Health & Human Services, Montgomery County government, Prince George's County Government, the governments of the State of Maryland and the District of Columbia. A minimum of five (5) years conducting network penetration testing, web application and API testing, internal and external vulnerability assessments and threat modeling and attack path analysis.