• Senior Cyber Security

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated, career and customer-oriented ** Senior Cyber Security Engineer ** to join our team in **Chantilly, VA.** This role supports a ... systems, and virtualized systems. + Strong understanding of Windows and Linux systems, operating system security principles, TCP/IP networking, 802.1x,… more
    ManTech (12/13/25)
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  • Senior ​Information Security Systems…

    Leidos (Mountain View, CA)
    **Description** Leidos is seeking a qualified Senior Information Systems Security Engineer (ISSE) to serve as the cybersecurity contact responsible for ... ensuring that assigned federal information systems comply with applicable agency security policies, standards, and regulatory frameworks such as FISMA and the NIST… more
    Leidos (01/13/26)
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  • Senior Information Systems Security

    Applied Research Solutions (Bedford, MA)
    **Description** ARS is seeking a Senior Information Systems Security Engineer (ISSE) candidate located at Hanscom, AFB. Applied Research Solutions (ARS) is ... awards and recognition program, and personalized attention from ARS Senior Managers. **Responsibilities include:** + Support the system/application authorization and… more
    Applied Research Solutions (01/06/26)
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  • Senior Principal Cyber Security

    ManTech (Chantilly, VA)
    **MANTECH** seeks a motivated, career and customer-oriented ** Senior Principal Cyber Security Engineer ** to join our team in **Chantilly, VA.** This role ... network management systems, and virtual systems + Knowledge of Windows and Linux systems, general operating system security practices, TCP/IP networking, 802.1x,… more
    ManTech (12/13/25)
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  • Senior Software Engineer (Teradyne,…

    Teradyne (North Reading, MA)
    …The Software Engineering team in North Reading is looking for an experienced Linux Software Engineer III with passion for learning, developing high quality ... our process, and our team. + Configure and manage Linux OS environment in both physical computers and VMs...ld, gcc/g++) is a plus + basic knowledge of security concepts (public-private keys, certificates, ssl/tls, ssh, TPM, TPM2)… more
    Teradyne (01/06/26)
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  • Senior System Security

    Parsons Corporation (Boulder, CO)
    …your talent and redefine what's possible. **Job Description:** Parsons is seeking a talented ** Senior Cyber Security Engineer ** to join our growing team! ... including some or all of the following: + System Security Plans (SSPs) + Security Control Traceability...OSCP, CISM, CEH, GSEC + System administration experience with Linux + Network switch and router administration experience or… more
    Parsons Corporation (01/14/26)
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  • Senior Systems Security

    RTX Corporation (Marlborough, MA)
    …(including vulnerability scanning). The candidate will report to the Lead Systems Security Engineer and work collaboratively with cross-functional teams. **What ... challenging. The Protected Communication Systems (PCS) team is hiring ** Senior Systems Security Engineers** to support programs...etc. * Familiarity with penetration test tooling, eg Kali Linux **What We Offer** * Medical, dental, and vision… more
    RTX Corporation (01/08/26)
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  • Senior Associate, Info Security

    L3Harris (Broomfield, CO)
    …sea and cyber domains in the interest of national security . Job Title: Senior Associate, Information Security Systems Engineer Job Code: 31042 Job ... cloud including architecture, design, deployment, and management of cloud security technologies. + Familiarity with Linux . +...of cloud security technologies. + Familiarity with Linux . + Familiarity with security related tools… more
    L3Harris (11/12/25)
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  • Senior Specialist, Cyber Infrastructure…

    L3Harris (Broomfield, CO)
    …and cyber domains in the interest of national security . Job Title: Senior Specialist, Cyber Infrastructure Systems Engineer Job Code: 32451 Job Location: ... and RMF requirements, integrating RMF principles into ground-up builds and ongoing security administration. + Integrate Linux and Windows systems within a… more
    L3Harris (12/26/25)
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  • Senior Information Systems Engineer

    City and County of San Francisco (San Francisco, CA)
    …the minimum qualifications. Application Deadline: Continuous How to Apply: Applications for Senior Information Systems Engineer - Systems Specialty are only ... integrate these systems together as an enterprise networking backbone or platform. The 1043 Senior Systems Engineer is the advanced journey level in the … more
    City and County of San Francisco (11/07/25)
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