• Zscaler (Washington, DC)
    …agility with a cloud-first strategy. We are looking for a Staff Information Security Engineer who will operate as a vulnerability management engineer inside ... systems, and adhering to one-way diode transfer protocols.** Reporting to the Senior Manager of Information Security Engineering, you will be responsible for: +… more
    DirectEmployers Association (11/22/25)
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  • Applied Research Solutions (Washington, DC)
    **Description** ARS is looking for a Senior Platform Engineer . As a Platform Engineer , you will play a crucial role in automating and optimizing our DevOps ... are motivated through our industry competitive benefits package, our awards and recognition program, and personalized attention from ARS Senior Managers.??… more
    DirectEmployers Association (12/10/25)
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  • Infinity Systems Engineering (Alexandria, VA)
    …be more with us! Job Summary: We are seeking a skilled Systems Administrator/Network Engineer to join our mission-driven team. This position offers a broad scope of ... industry standards, company policies, and regulatory requirements. + Conduct network vulnerability assessments and respond to security threats. + Support network… more
    DirectEmployers Association (12/03/25)
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  • Sr Vulnerability Engineer

    Datavant (Washington, DC)
    …to realize our bold vision for healthcare. **What We're Looking For** As a ** Sr Vulnerability Engineer ** , you will be responsible for identifying, ... The candidate will have a strong technical background in cybersecurity, vulnerability scanning tools in application, infrastructure space, and risk assessment… more
    Datavant (12/13/25)
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  • DevOps Engineer , Sr .

    William C Brown Inc (Springfield, VA)
    DevOps Engineer , Sr . EOE Statement We are an equal employment opportunity employer. All qualified applicants will receive consideration for employment without ... Deliver simple solutions to complex problems as a DevOps Engineer , Sr . Here, you'll tailor cutting-edge solutions...reliability, and drive security initiatives, like access control and vulnerability testing * Work with A&A Teams to maintain… more
    William C Brown Inc (12/01/25)
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  • Sr . DevOps Engineer

    Arena Technical Resources, LLC (Springfield, VA)
    Sr . DevOps Engineer Location: Springfield, VA, US Job ID: ATR 17260 Job Description Title: Sr . DevOps Engineer Location: Springfield, VA ... customer. As part of the GSS Team the DevOps Engineer 's expertise is needed to support a sophisticated enterprise...reliability, and drive security initiatives, like access control and vulnerability testing - Work with A&A Teams to maintain… more
    Arena Technical Resources, LLC (11/29/25)
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  • Azure Security Sr . Engineer

    Arena Technical Resources, LLC (Washington, DC)
    Azure Security Sr . Engineer Location: Washington, DC, US Job ID: ATR 17715 Job Description Job Title: Azure Security Sr . Engineer Location: Washington, ... for IL6) for continuous monitoring, logging, and incident response - Conduct vulnerability assessments and implement remediations aligned to NIST 800-53, DoD STIGs,… more
    Arena Technical Resources, LLC (11/29/25)
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  • Sr . System Admin, IT Engineer III

    TekSynap (Washington, DC)
    …a US Citizen + Must successfully obtain a Public Trust **Overview** We are seeking a Sr . Systems Admin, IT Engineer III to join our team supporting Joint Service ... **Responsibilities & Qualifications** **RESPONSIBILITIES** + Provide senior systems administrators and support to all incident escalation tickets that are unable to… more
    TekSynap (10/16/25)
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  • Sr Site Reliability Engineer

    SitusAMC (Washington, DC)
    …+ Standardize Monitoring and alerting environments + Participate in patching and vulnerability remediation + Manage IAM roles and conduct basic security audits + ... inventory accounts + Ability to administrate source code repositories + Work with Sr . Engineers on scoping out proposed Projects + Become member of Incident response… more
    SitusAMC (12/03/25)
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  • AI/ML Engineer with RE/VR proficiency and…

    Cipher Tech Solutions (Vienna, VA)
    …while maintaining strong proficiency in software development, reverse engineering, and vulnerability research. You will apply your foundational knowledge of RE, VR, ... have proficiency in reverse engineering with an aptitude for performing vulnerability research. + Must be possess strong verbal/written communications skills that… more
    Cipher Tech Solutions (11/19/25)
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  • Vulnerability Researcher: Senior

    Cipher Tech Solutions (Vienna, VA)
    …Vienna, VA Description: The candidate will be working independently as a Vulnerability Researcher to identify flaws in software. The candidate must be familiar ... with the latest techniques in vulnerability research and demonstrate their ability to follow best...of analyzing malicious code. The goal of a reverse engineer is to understand how the malicious code works… more
    Cipher Tech Solutions (11/21/25)
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  • Sr . Cyber Defense Architect

    DarkStar Intelligence LLC (Fort Meade, MD)
    Sr . Cyber Defense Architect Location: Fort Meade, MD | Type: Full-Time | Clearance: TS/SCI CI polygraph required Overview We are seeking a Sr . Cyber Defense ... behave differently in VM vs containerized environments. + Assess whether a vulnerability is meaningful based on system architecture and exposure. Policy Shaping &… more
    DarkStar Intelligence LLC (11/06/25)
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  • Sr . ISSE TS/SCI Poly

    Leidos (Annapolis Junction, MD)
    …Polygraph up front. Unfortunately, no exceptions. Leidos has an exciting opportunity for a Senior Security Engineer to join a high performing agile team using ... solid understanding of security practices and policies as well as hands-on vulnerability testing experience. You will have numerous responsibilities from day to day… more
    Leidos (12/15/25)
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  • Senior Computer Network Defense (CND)…

    V2X (Springfield, VA)
    …challenges with integrity, respect, responsibility, and professionalism. We are hiring for a Senior Computer Network Defense (CND) Engineer with an active TS/SCI ... our Springfield, VA location. Our positions are required to be onsite. The Senior Computer Network Defense (CND) Engineer tests, implements, deploys, maintains,… more
    V2X (12/12/25)
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  • Information Systems Security Engineer

    CGI Technologies and Solutions, Inc. (Arlington, VA)
    **Information Systems Security Engineer (ISSE) - Senior ** **Category:** Cyber Security **Main location:** United States, Virginia, Arlington **Position ID:** ... team to deliver state-of-the-art capabilities. The Information System Security Engineer (ISSE) designs, implements, and manages security solutions for information… more
    CGI Technologies and Solutions, Inc. (09/26/25)
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  • Senior Security Engineer

    Leidos (Arlington, VA)
    …+ Tackles large security projects, both of a technical and compliance nature. The senior engineer is expected to tackle difficult technical issues and changes ... **Description** Leidos has an immediate need for a Senior Security Engineer for a new...technical assessment and process improvement initiatives + Communicate security vulnerability reports and trends to ensure appropriate corrective action… more
    Leidos (12/12/25)
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  • Senior Cyber Engineer

    Nightwing (Washington, DC)
    …customers in the intelligence community, defense, civil, and commercial markets. ** Senior Cyber Engineer ** Nightwing provides technically advanced full-spectrum ... challenging, meaningful work that is vital to our national security, apply today! ** Senior Cyber Engineer ** Cyber Offense and Defense Experts (CODEX) is seeking… more
    Nightwing (12/04/25)
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  • Senior Offensive Security Engineer

    CoStar Realty Information, Inc. (Arlington, VA)
    Senior Offensive Security Engineer Job Description **Offensive Security Engineer ** **Overview** CoStar Group (NASDAQ: CSGP) is a leading global provider of ... the vulnerabilities. The ability to explain the exploit to senior level management is key to success in this...adversary emulation and the validation of detective, defensive, and vulnerability controls + Plan and oversee external red team… more
    CoStar Realty Information, Inc. (11/24/25)
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  • Senior Sales Engineer - Mid Market…

    Proofpoint (Washington, DC)
    …help to deliver People-Centric solutions that protect against today's cyber threats. The Senior Sales Engineer is the Technical Lead for the Proofpoint Pre-Sales ... a Sales/Systems Engineer , Technical Account Manager, Security Engineer or senior level product support, preferably...Cloud security and shadow IT monitoring + IT security, vulnerability or risk assessments, and policy enforcement + Data… more
    Proofpoint (10/28/25)
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  • Senior Principal Offensive Security…

    Oracle (Washington, DC)
    **Job Description** Job Description **Offensive Security Engineer ** Oracle Cloud Infrastructure Group The Oracle Cloud Infrastructure (OCI) Offensive Security team ... to customers. The Offensive Security group performs security assessments, vulnerability research, static and dynamic analysis research, penetration testing,… more
    Oracle (11/25/25)
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