• Information Security Engineer - Black Lotus…

    Lumen (Austin, TX)
    …manage complex technical projects, effectively driving them to successful completion. + Active TS /SCI clearance with poly **Well-experienced candidates may also ... trust and transparency. People power progress. We're looking for top -tier talent and offer the flexibility you need to...Role** Black Lotus Labs is seeking a Principal Security Engineer on the Research & Analysis team. This team… more
    Lumen (11/05/25)
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  • System Engineer

    ManTech (San Antonio, TX)
    …and do various interrogations (ping, DNS) **Clearance Requirement:** + Must have a current/ active TS /SCI with Poly **Physical Requirements:** + Must be able to ... **ManTech** seeks an experienced and passionate, career and customer-oriented **System Engineer ** to join our team located in the San Antonio, TX area.… more
    ManTech (09/30/25)
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  • Sr. Spec, Systems Engineering (Mission Systems)

    L3Harris (Greenville, TX)
    Secret with SCI. + Must be a US Citizen. Preferred Additional Skills: + Active Top Secret with SCI. + Security+ Certification. + RC-135 Operator ... interest of national security. Job Title: Sr. Specialist, Systems Engineer Job Code: 30508 Job Location: Greenville, TX (On-Site)...Hands-on experience with Operator interfaces. + Must have an active Secret clearance at the time of… more
    L3Harris (10/30/25)
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  • Secure Infrastructure Design Developer (Senior/…

    RTX Corporation (Richardson, TX)
    …skills, with the ability to convey complex technical concepts to non-technical stakeholders. + Active DoD Top Secret clearance. Some of our competitive ... Onsite **U.S. Citizen, US Person, or Immigration Status Requirements:** Active and transferable US government issued security clearance is...100% onsite in Richardson, TX, and requires a DoD Secret clearance. Top Secret Preferred.… more
    RTX Corporation (11/12/25)
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  • Lead, Integration / Test Engineering

    L3Harris (Greenville, TX)
    Active DoD Secret Security Clearance, with the ability to obtain Top Secret which requires US Citizenship. Job Description: Job duties include being ... of national security. Job Title: Lead, Integration / Test Engineer Job Code: 30280 Job Location: Greenville, TX. Schedule:...years of prior related experience. + Must have an active DoD Secret Security Clearance, which requires… more
    L3Harris (10/26/25)
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  • System Administrator (MS Windows Server)

    TAD PGS, Inc. (Lackland AFB, TX)
    …is required.** **Candidate must have the ability to obtain and maintain a Top Secret /SCI Security Clearance.** Responsibilities : + Creates and manages capacity ... of system operations. + Analyzes system requirements and performance of hardware/ software systems, and develops/recommends specific measures to increase the overall… more
    TAD PGS, Inc. (10/21/25)
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  • Combat Air Force Business Development Manager

    CAE USA INC (Arlington, TX)
    …and proposal support . This position reports to the DUSAF Business Development Lead . Active Top Secret Clearance / SCI eligibility. Essential Duties and ... and Education Requirements + Bachelor's Degree in business , engineer ing , national security , or another applicable...and m odeling and s imulation + Understanding of software development, secure networking, cyber security + Knowledge and… more
    CAE USA INC (11/14/25)
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  • Specialist Solutions Architect - Wickr, Secure…

    Amazon (Austin, TX)
    …with Amazon Web Services- Security Clearance: Preferred for Candidates to have an active US Government TS /SCI security clearance or the ability to obtain ... in a customer-facing, sales-aligned role such as consultant, solutions engineer or solutions architect. - Experience in directly supporting...a TS /SCI security clearance About the team Diverse Experiences AWS… more
    Amazon (11/18/25)
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  • Product Owner (Hybrid)

    Huntington Ingalls Industries (San Antonio, TX)
    Enlighten, honored as a Top Workplace from USA Today, is a leader in big data solution development and deployment, with expertise in cloud-based services, ... software and systems engineering, cyber capabilities, and data science....Why Enlighten? At Enlighten, our team's unwavering work ethic, top talent and celebration of innovative ideas have helped… more
    Huntington Ingalls Industries (11/12/25)
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  • Lead, Project Engineering

    L3Harris (Greenville, TX)
    …to interact at every phase of the program lifecycle. Essential Functions: + Secret Clearance with ability to achieve TS /SCI if deemed necessary, ability ... the interest of national security. Job Title: Lead, Project Engineer Job Code: 30136 Job Location: Greenville, TX Schedule:...working extended hours + Leadership Skills Position requires an active DoD Secret Security Clearance, the ability… more
    L3Harris (11/01/25)
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