• Staff Security Research Engineer

    Proofpoint (Portland, OR)
    …we're a leader in next-generation cybersecurity. Protection Starts with People. **Staff Security Research Engineer ** **Your day-to-day** + Design and develop ... their data, and make their users more resilient against cyber -attacks. Leading organizations of all sizes, including more than...capabilities **What you bring to the team** As a Security Research Engineer on Proofpoint's Threat Research… more
    Proofpoint (12/18/25)
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  • Security Infrastructure Engineer

    Leidos (Alexandria, VA)
    **Description** As a Security Engineer on our team, you will operate and maintain network security infrastructure utilized by a team of cybersecurity ... procedures and tactics, techniques, and procedures (TTPs) + Maintain complete and current network and elevation diagrams for all managed security equipment +… more
    Leidos (11/15/25)
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  • Consulting Enterprise Security

    HCA Healthcare (Nashville, TN)
    …colleagues invested over 156,000 hours volunteering in our communities. As a(an) Consulting Enterprise Security Engineer with HCA Healthcare you can be a part of ... organization. We are looking for an enthusiastic Consulting Enterprise Security Engineer to help us reach our...drive the assessment/analysis of a broad range of applications, network , and security architectures for the enterprise… more
    HCA Healthcare (12/24/25)
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  • Security Engineer

    CACI International (College Park, MD)
    Security Engineer Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular ... We are looking for a proactive and experienced Technical Security Engineer to join our cybersecurity team....hands-on coding projects 2. Proficiency in Linux operating system, network security , including firewalls, VPNs, IDS/IPS, and… more
    CACI International (11/08/25)
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  • Senior Information System Security

    ManTech (Chantilly, VA)
    **MANTECH** seek a motivated, career and customer-oriented **Senior Information System Security Engineer ** to join our team in **Washington, DC, Quantico, ... IS and Network Environment. + Design, develop, and implement network security measures that provide confidentiality, integrity, availability, authentication,… more
    ManTech (01/01/26)
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  • Senior Network Engineer

    Fiserv (Omaha, NE)
    …on a global scale, come make a difference at Fiserv. **Job Title** Senior Network Engineer **About Your Role:** You will join an experienced Extranet ... customers. **What you'll do:** + Deliver a variety of network , security , cloud, virtualization, SDN, and automation...with Fiserv. Fraudulent job postings may be used by cyber criminals to target your personally identifiable information and/or… more
    Fiserv (12/20/25)
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  • Network Architect Engineer 5

    M. C. Dean (Springfield, VA)
    … performance tuning, troubleshooting, and root cause analysis. + Proficiency in network security principles, including segmentation and compliance standards. + ... and limitations + Working experiences of deploying and managing enterprise network security appliances. + Understand WAN/Internet transport and routing… more
    M. C. Dean (12/19/25)
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  • Cloud Security Engineer

    Koniag Government Services (Washington, DC)
    …Harbor Solutions, LLC a Koniag Government Services company, is seeking an experienced Cloud Security Engineer with a TS/SCI clearance to support EHS and our ... Solutions is seeking experienced, motivated, career and customer-oriented Cloud Security Engineer to join our team. The...automation tools. + Demonstrated proficiency in vast array of Cyber Security platforms: Cloud Security more
    Koniag Government Services (11/20/25)
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  • Staff Security Engineer (Detection…

    Intuit (Plano, TX)
    **Overview** We are seeking a talented Detection Engineer to join our Security Incident Response Team (SIRT) and help us protect our organization from cyber ... The ideal candidate will have a deep understanding of security detection techniques and be able to design, implement,...as SIEM (Splunk), EDR (Crowdstrike Falcon), CSPM (Wiz) and network traffic analysis + Engage with threat hunting, event… more
    Intuit (12/19/25)
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  • Lead, Information Systems Security

    L3Harris (Greenville, TX)
    …in the interest of national security . Job Title: Lead, Information Systems Security Engineer Job Code: 31728 Job Location: Greenville, Texas Schedule: 9/80 ... secret level. + Certified Information Security Manager (CISM), Certified Information Security Auditor (CISA), Certified Cyber Security Architect (CCSA),… more
    L3Harris (12/06/25)
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