• Information Systems Security

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

    TekSynap (Dahlgren, VA)
    **Responsibilities & Qualifications** TheTekSynap is seeking a **S** **enior S** **ystem** **s Security Engineer ** **.** The Senior Systems Security ... posture. **RESPONSIBILITIES** + Develop and implement cybersecurity engineering and system security plansin accordance withDoD and Navy policies. + Conduct … more
    TekSynap (10/31/25)
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  • Network Engineer Senior

    General Dynamics Information Technology (Fort Belvoir, VA)
    …years of related experience **US Citizenship Required:** Yes **Job Description:** **Network Engineer Senior ( Security ) - TS/SCI required** Transform ... technology into opportunity as a **Network Engineer Senior ( Security )** at GDIT. Shape what's next for mission-critical government projects while shaping… more
    General Dynamics Information Technology (12/09/25)
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  • Senior Security Engineer

    CoStar Realty Information, Inc. (Arlington, VA)
    Senior Security Engineer Job Description **Overview** CoStar Group (NASDAQ: CSGP) is a leading global provider of commercial and residential real estate ... As the security section grows, so will the tools and the ** Senior Security Engineer ** will be the person charged with implementing them. The successful… more
    CoStar Realty Information, Inc. (10/24/25)
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  • Senior Sales Engineer - Mid Market…

    Proofpoint (Washington, DC)
    …on technical experience, either as a Sales/Systems Engineer , Technical Account Manager, Security Engineer or senior level product support, preferably in ... 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… more
    Proofpoint (10/28/25)
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  • Senior SaaS Security Engineer

    CoStar Realty Information, Inc. (Arlington, VA)
    Senior SaaS Security Engineer Job Description **Overview** CoStar Group (NASDAQ: CSGP) is a leading global provider of commercial and residential real estate ... available, we provide an invaluable edge in real estate. We're hiring a ** Senior SaaS Security Engineer ** to help us evolve our corporate environment to… more
    CoStar Realty Information, Inc. (11/04/25)
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  • Senior Principal Security

    Oracle (Washington, DC)
    …**What are we looking for?** The OCI Core Services organization is looking for a Senior Principal Security Engineer that will be the technical security ... and libraries. **Preferred Qualifications** + Prior role as a Principal or Senior Principal Security Engineer at a major cloud provider (OCI, AWS, Azure,… more
    Oracle (11/25/25)
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  • Senior Offensive Security

    CoStar Realty Information, Inc. (Arlington, VA)
    Senior Offensive Security Engineer Job Description **Offensive Security Engineer ** **Overview** CoStar Group (NASDAQ: CSGP) is a leading global ... an invaluable edge in real estate. Evolve our offensive security capabilities to test our internal and external facing...the vulnerabilities. The ability to explain the exploit to senior level management is key to success in this… more
    CoStar Realty Information, Inc. (11/24/25)
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  • Senior Systems Security

    EPS Corporation (Dahlgren, VA)
    Senior Systems Security Engineer - (760) Share this job as a link in your status update to LinkedIn. Job Title Senior Systems Security Engineer ... EPS Corporation Company is seeking a highly skilledSenior Systems Security Engineerto provide expert-level cybersecurity and systems protection support within… more
    EPS Corporation (11/13/25)
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  • Information System Security Engineer

    TekSynap (Washington, DC)
    …:Services to support Information System Engineering performed by the Information System Security Engineer (ISSE) includes the following activities: + Lead, ... Oriented + Teamwork **Overview** We are seeking an Information System Security Engineer (ISSE) to join our team supporting a government customer. TekSynap… more
    TekSynap (11/30/25)
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  • Senior Security Systems…

    Cydecor, Inc. (Dahlgren, VA)
    …commitment to Excellence, what separates us. Job Description: Cydecor is seeking a Senior Security Systems Engineer to support cybersecurity and systems ... intelligence to enable decision-support and remain ahead of ever-evolving national security challenges. Our success rests squarely on three bedrock principles:… more
    Cydecor, Inc. (12/21/25)
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  • Security Engineer

    Arena Technical Resources, LLC (Alexandria, VA)
    …Remote Eligibility: Candidate must possess an MBI (T2) clearance Job Description: As a Network Security Engineer Senior , the work you'll do will be impactful ... TO SUCCEED Bring your cyber expertise and drive for innovation. The Network Security Engineer Senior must have: * Education: Bachelor of Science *… more
    Arena Technical Resources, LLC (11/29/25)
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  • Senior Security Engineer

    Quantexa (Washington, DC)
    …using platforms including Wiz, Zscaler, Sentinel, and complementary detection tooling. + Engineer , tune, and maintain detection logic and security policy ... of professional experience in cybersecurity, with at least 7 years in senior or lead security roles. + Master's degree in information security , Computer… more
    Quantexa (12/11/25)
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  • Senior Security Engineer

    SAIC (Washington, DC)
    **Description** We are seeking a skilled Security Engineer with extensive experience in vulnerability remediation at the operating system (OS) level to join our ... Washington, DC The ideal candidate will be responsible for ensuring the security and integrity of our cloud infrastructure by identifying, assessing, and mitigating… more
    SAIC (12/19/25)
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  • Senior Security Engineer

    Zoom (Washington, DC)
    What you can expect The Security Engineer is responsible for security design and reviews across our products and services, with a specific focus on Platform ... brings broad technical expertise and hands-on experience in end-to-end product security .In this role, you'll collaborate with engineering teams, primarily those… more
    Zoom (12/18/25)
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  • Senior Security Engineer

    Oracle (Washington, DC)
    …in threat hunting, analyzing indicators of compromise (IOCs), investigating security incidents, managing incident responses, and conducting digital forensics across ... this role, you will be part of a dedicated security operations team, leveraging data loss prevention, case management...tools, and developing automation to detect and respond to security threats in real time. Additionally, you will play… more
    Oracle (11/25/25)
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  • Senior Network Engineer

    Tactibit Technologies LLC (Suitland, MD)
    …refresh and modernization planning, network integrations, and security hardening. As a Senior Network Engineer , you will be expected to plan and lead ... testing, hardening, and assessments to meet strict compliance and operational security requirements Senior Network Engineer requirements are: + 10+ years of… more
    Tactibit Technologies LLC (09/25/25)
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  • Senior DevOps Engineer

    St. George Tanaq Corporation (Washington, DC)
    …plans. + Embed security in DevOps workflows in coordination with the Senior Security Engineer . + Document all processes, configuration management, and ... Senior DevOps Engineer WFH Flexible*Washington, DC...with infrastructure-as-code tools (Ansible, Terraform). + Knowledge of federal security and compliance frameworks (FedRAMP, NIST RMF, OMB M-Memos).… more
    St. George Tanaq Corporation (10/05/25)
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  • Cleared Senior Information Systems…

    Virtual Service Operations (Lorton, VA)
    Cleared Senior Information Systems Security Engineer (ISSE) L4 * Lorton, VA (http://maps.google.com/maps?q=Lorton+VA+USA) Description Are you looking to take ... the next steps in your career as an Information Systems Security Engineer (ISSE)? Let's chat and see if we are a good match! Opportunity: We are building a team… more
    Virtual Service Operations (11/09/25)
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  • Senior Information Systems Security

    GovCIO (Alexandria, VA)
    **Overview** GovCIO is currently hiring a ** Senior ** **Information Systems Security Engineer ** for a program with the US Coast Guard. This position will be ... $165,000.00 /Yr. Submit a referral to this job (https://careers-govcio.icims.com/jobs/7179/ senior -information-systems- security - engineer /job?mode=apply&apply=yes&in\_iframe=1&hashed=-1834385473) **Location** _US-VA-Alexandria_ **ID**… more
    GovCIO (11/26/25)
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