• Linux Systems Engineer

    System One (Herndon, VA)
    …software and hardware patches. * Strong knowledge of networking protocols such as TCP / IP , NAT, routing and switching. * Experience with analyzing logs, stack ... traces, debug libraries, software/hardware. * Possesses an understanding of Python, Bash, SQL databases. * Create installation guides and as-built documentation. * Experience with Linux firewall and VPN configuration System One, and its subsidiaries including… more
    System One (08/08/25)
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  • Penetration Tester

    Centene Corporation (Richmond, VA)
    …and attacks; understanding of routing, remote access, proxies, firewalls, TCP / IP , email gateways/filters, encryption, network scanning, packet sniffing ... and injection, advanced network reconnaissance, persistence techniques, and wireless network exploitation concepts; remote and local exploitation techniques; security evasion techniques; social engineering techniques, proficiency in programming languages… more
    Centene Corporation (08/08/25)
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  • Production Engineer

    Meta (Richmond, VA)
    …field, or equivalent practical experience 6. 7+ years of experience in UNIX and TCP / IP network fundamentals 7. 7+ years of coding experience 8. Experience ... 9. Experience learning software, frameworks and APIs 10. Experience with Internet service architecture capacity planning and/or handling needs for urgent capacity… more
    Meta (08/08/25)
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  • Senior Security Engineer

    ManTech (Chantilly, VA)
    …. Strong knowledge of Windows and Linux systems, operating system security practices, TCP / IP networking, 802.1x, and core network security principles . IAT Level ... II certification (GSEC, Security+, SSCP, or CCNA-Security), or ability to obtain within 6 months of hire **Preferred Qualifications:** . Experience implementing and supporting complex, multi-component software solutions . Familiarity with vendor-agnostic C2C… more
    ManTech (08/08/25)
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  • Cyber Software Engineer

    Leidos (Arlington, VA)
    …and C++ programming and strong proficiency in Rust. + Hands-on experience with TCP / IP networking stack development and strong understanding of network protocols ... and concepts from a security perspective. + Deep understanding of operating system internals.. + Excellent analytical, problem-solving, and critical thinking skills and ability to work independently on complex tasks and lead technical efforts. + Strong… more
    Leidos (08/08/25)
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  • Systems Administrator

    BOOZ, ALLEN & HAMILTON, INC. (Arlington, VA)
    …servers within classified networks + Ability to troubleshoot basic networking issues such as TCP / IP , VLANs, DNS, and DHCP + Ability to follow guidance to support ... system compliance + Active TS/SCI clearance; willingness to take a polygraph exam + Bachelor's degree and 2+ years of experience with system administration, or 5+ years of experience with system administration in lieu of a degree + DoD 8570 IAT Level II… more
    BOOZ, ALLEN & HAMILTON, INC. (08/08/25)
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  • Virtualization Engineer

    Arena Technical Resources, LLC (Springfield, VA)
    …8.X; VMware NSX/NSX-T -Windows Server2016/2019/2022 -Unix/Linuxfamiliarity - Windows 10/11 - TCP / IP , DNS, Local Area Networking, AD, GPO Desired Skills: ... - Cloud experience (AWS, Azure) - Cisco UCS Cloud Platform - VMware NSX/NSX-T - Experience creating and implementing workflows and blueprints for use with VMware Aria Automation solution - Service Now Experience a plus - Technical written & verbal… more
    Arena Technical Resources, LLC (08/08/25)
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  • TS/SCI Network Administrator

    TEKsystems (Reston, VA)
    …with monitoring tools (eg, SolarWinds, Nagios, Splunk, or similar). * Understanding of TCP / IP , DNS, DHCP, VPNs, firewalls, and network protocols. * Strong ... problem-solving and communication skills. * Ability to work in a high-availability, fast-paced environment with attention to detail. * Must possess an active Security+ or equivalent prior to start. * Must possess an active DoD TS/SCI at time of consideration.… more
    TEKsystems (08/08/25)
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  • Senior Windows Systems Administrator

    SMX (Dahlgren, VA)
    …network security tools such as firewalls + Proficient with network protocols including TCP / IP + Vulnerability detection and remediation + IAT III certification ... such as CISSP, CISM, GSLC, CASP or equivalent **Application Deadline:** 9/1/2025 \#cjpost #LI-ONSITE The SMX salary determination process takes into account a number of factors, including but not limited to, geographic location, Federal Government contract… more
    SMX (08/08/25)
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  • ZScaler Network Engineer - ZeroTrust Experience

    BAE Systems (Arlington, VA)
    …of some years of experience. + In-depth understanding of communication protocols (mainly TCP / IP ) and routing protocols (eg BGP, OSPF) + Operational experience ... of Interior Gateway Routing protocols (eg, OSPF, EIGRP), Border Gateway Protocol (BGP) configuration, BGP peering, BGP route advertisements, prefix-lists and… more
    BAE Systems (08/08/25)
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