Senior Information Security Analyst Calibre SystemsSenior Information Security AnalystWashington, DC$105,000–$115,000 / yearCALIBRE Systems, Inc., an employee-owned mission focused solutions and digital transformation company, is looking for a highly qualified Senior Information Security Analyst to support a DoD client with enterprise cybersecurity for a large program serving military families. This candidate will lead and oversee cybersecurity compliance, security architecture, threat detection, vulnerability management, incident response, RMF/eMASS support, and ATO sustainment for DoD cloud infrastructure and information systems.
NewSenior Wireless Network Operator Oak Grove Technologies LLCSenior Wireless Network OperatorFort Belvoir, VAJob Description Description: Oak Grove Technologies, LLC, a dynamic and fast-growing federal contractor, is seeking a highly skilled and motivated Senior Wireless Network Operator to conduct advanced wireless-focused red team assessments and offensive cyber operations. Professional Certification(s) required for this position are as follows: Must hold an IAT Level III certification as defined and described in DoDD 8570.01, 8570.01-M, 8140.01-03, and as amended.
NewSecurity Engineer SteerBridgeSecurity EngineerVienna, VAExperience implementing and managing identity and access management controls, including role-based, attribute-based, and federated access models, ensuring least-privilege enforcement and secure authorization across architectures and access governance practices. We don’t simply hire exceptional talent; we cultivate it , creating meaningful career pathways for veterans, military spouses, and professionals who share our passion for advancing technology and strengthening the missions we serve.
NewSenior Security Engineer Evolver FederalSenior Security EngineerWashington, DCThe Senior Security Engineer will work closely with SOC teams, architects, and program managers to deliver robust security capabilities across cloud (AWS GovCloud, Azure Government), on-premises, and hybrid environments. This position requires deep technical expertise, hands-on experience with security tools, and the ability to lead engineering efforts for mission-critical systems in highly regulated environments.
NewDHS Sr. Operational Technology (OT) Security Engineer OneZero SolutionsDHS Sr. Operational Technology (OT) Security EngineerWashington, DCThe result of these efforts will be that the systems meet all the requirements for ATO approval before they are officially submitted to the Office of Chief Information Officer (OCIO).Job SummaryServe as the Cybersecurity Assessment Team's principal Operational Technology SME.Participate in the development and implementation of comprehensive Cybersecurity program strategies, including OT security engineering design review, vulnerability assessments, penetration testing, and incident response planning. Operational Technology (OT) Security EngineerLocation: NCRClearance: TS /SCIOneZero Solutions is on contract to provide division-wide support for Federal Information Security Modernization Act (FISMA) compliance, execution of the Risk Management Framework (RMF) process to achieve and maintain Authority to Operate (ATO) security authorizations, and deliver cyber security compliance for DHS operational mission systems.
NewSME Hardware Reverse Engineer Solutions³ LLCSME Hardware Reverse EngineerArlington, VASolutions³ LLC is seeking an experienced and technically proficient Subject Matter Expert (SME) Hardware Reverse Engineer to provide specialized expertise in hardware reverse engineering focused on operational technology (OT) and industrial control systems. This position requires deep technical knowledge of proprietary hardware systems, exploitation methodologies, and defensive strategies to support forensic investigations of compromised edge devices and systems where threat actors have embedded malware deeply within hardware components.
NewSubject Matter Expert - Hardware Reverse Engineer BCMCSubject Matter Expert - Hardware Reverse EngineerArlington, VAThis position requires deep technical knowledge of proprietary hardware systems, exploitation methodologies, and defensive strategies to support forensic investigations of compromised edge devices and systems where threat actors have embedded malware deeply within hardware components. Business Computers Management Consulting Group, LLC (BCMC) is a small business specializing in Information Technology (IT), Cybersecurity, Information Assurance (IA), SOA, Big Data Management, Program Management, and more for Federal, State, and Local agencies.
NewMid-Level Security Engineer HalvikMid-Level Security EngineerAlexandria, VAThis is a hybrid position based at the customer location in Alexandria, VA.Core ResponsibilitiesOperational Support: Configure and maintain data discovery and classification policies across assigned cloud, on-premises, SaaS, and developer repositories, supporting prioritized rollout to high-risk systems. Working under the direction of the Lead Senior Security Engineer and Program Manager, the Mid-Level Security Engineer helps operationalize policy controls, maintain compliance dashboards, and support remediation activities that protect sensitive agency and stakeholder information.
NewSecurity Engineer @OrchardSecurity EngineerBethesda, MD$75,000–$80,000 / yearBachelor’s degree in computer science, engineering, or a related field or an equivalent combination of education and experience and appropriate technical certifications, with at least twelve (12) years of experience in information technology and (4) years leading or performing systems engineering or related functions. Support a federal healthcare enterprise environment by collaborating with and providing support to other IT Operational Service Areas (Server/Storage, Network, Service Desk, Application Development) in the design, development, and testing of solutions, as well as diagnosing, troubleshooting, and remediation of issues.
NewSecurity Engineer Agile DefenseSecurity EngineerSpringfield, VAThese systems include threat emulation, custom big data analytics, open-source and COTS/Government of the Shelf (GOTS) tools as listed below: • Cyber Threat Detection Tools • Case Tracking Tool - CASPR (JIRA, Confluence) • Enterprise Tactical Operations Tool • eDiscovery and Forensics Tools - EnCase, FTK, Nuix • Hunting and Threat Emulation Tools - Analysts VM's • Focused Operations Networks - Palo Alto FW's, Dell Switches • Threat Detection Tools - McAfee ePO, DTEX • Other FO Development Projects (As Assigned) In support of EAS the SET will perform the following tasks: Implement automation and orchestration capabilities within the FO environment. Requisition #: 1289 Job Tittle: FO Security Engineer Clearance: Secret Location: Springfield, VA The Security Engineering Team (SET) is required to provide network maintenance and special projects engineering support.
NewSenior CANO Developer Oak Grove Technologies LLCSenior CANO DeveloperFort Belvoir, VASoftware vulnerability research and exploit development, including exploits, shellcode, and bypass techniques for mitigations such as NX (nonexecutable stack), ASLR, and advanced exploit protections. Host-based and network-based forensics, cyber incident response, cyber-criminal investigations, intrusion detection/analysis, and designing countermeasures and mitigations for programming language weaknesses and vulnerabilities.
NewSubject Matter Expert II ARSIEMSubject Matter Expert IIArlington, VAThis position requires deep technical knowledge of proprietary hardware systems, exploitation methodologies, and defensive strategies to support forensic investigations of compromised edge devices and systems where threat actors have embedded malware deeply within hardware components. ARSIEM is looking for a Subject Matter Expert Hardware Reverse Engineer to provide specialized expertise in hardware reverse engineering focused on operational technology (OT) and industrial control systems.
Penetration Tester OR Pen Tester Pyramid, IncPenetration Tester OR Pen TesterMcLean, VA$70–$80 / hourFull timeBy applying to our jobs you agree to receive calls, AI-generated calls, text messages, or emails from Pyramid Consulting, Inc. and its affiliates, and contracted partners. Working knowledge of networking, (routing, DNS, common ports, protocols, and firewalls).
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.
Lead Penetration Tester Revolutional, LLCLead Penetration TesterWashington, DC$110,000–$150,000 / yearGPEN (GIAC Penetration Tester), GXPN (GIAC Exploit Researcher and Advanced Penetration Tester), OSCP (Offensive Security Certified Professional), or equivalent offensive security credential. You develop test plans, lead technical execution, produce security assessment reports and criticality matrices, and deliver out-brief presentations directly to agency CIO and CISO-level audiences.
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.
Senior Penetration Tester Govcio LLCSenior Penetration TesterWashington, DC$124,540–$180,000 / yearFull timeThis role ensures mission‑critical security assurance across enterprise systems, applications, and cloud infrastructures by applying deep technical expertise, zero‑trust principles, and attacker‑focused methodologies. Conduct deep technical analysis of vulnerabilities including buffer overflows, SQL injection, CSRF, XSS, race conditions (TOCTOU), XXE, encryption weaknesses, authentication bypass, and similar issues.
Penetration Tester PeratonPenetration TesterArlington, Virginia$86,000–$138,000 / yearFull timePossess one of the following certifications, OR be able to obtain before start date: CCNA Cyber Ops, CCNA-Security, CEH, CFR, Cloud+, CySA+, GCIA, GCIH, GICSP, SCYBER, Security+ CE, SSCP. As the world’s leading mission capability integrator and transformative enterprise IT provider, we deliver trusted, highly differentiated solutions and technologies to protect our nation and allies.
Penetration Tester, Senior (TS/SCI Clearance) Praescient Analytics LLCPenetration Tester, Senior (TS/SCI Clearance)Arlington, VA$110,000–$160,000 / yearPosition Overview: Praescient Analytics is seeking a highly motivated Penetration Tester to join our cybersecurity team in Arlington, VA, supporting the Department of War (DoW) Chief Digital and Artificial Intelligence Office's (CDAO) War Data Platform (WDP)-formerly known as Advana. You will conduct comprehensive penetration tests across applications, networks, and hybrid-cloud systems hosting hundreds of curated analytics tools, actively identifying and exploiting vulnerabilities to validate and strengthen the platform's security posture against advanced threats.
Penetration Tester, Mid (TS/SCI Clearance) Praescient Analytics LLCPenetration Tester, Mid (TS/SCI Clearance)Arlington, VA$90,000–$130,000 / yearPosition Overview: Praescient Analytics is seeking a highly motivated Penetration Tester to join our cybersecurity team in Arlington, VA, supporting the Department of War (DoW) Chief Digital and Artificial Intelligence Office's (CDAO) War Data Platform (WDP)-formerly known as Advana. You will conduct comprehensive penetration tests across applications, networks, and hybrid-cloud systems hosting hundreds of curated analytics tools, actively identifying and exploiting vulnerabilities to validate and strengthen the platform's security posture against advanced threats.