• Lead Network Engineer- Palo Alto Firewalls

    CoStar Realty Information, Inc. (Arlington, VA)
    …+ Protocol and Application Knowledge: Strong understanding of networking protocols ( TCP , UDP, ICMP, etc.) and application-layer protocols, including: + Dynamic ... Routing Protocols (BGP, OSPF) + Switching and LAN architectures (VLANs, Spanning Tree, ACI, Spine/Leaf) + Microsoft M365 suite (Exchange Online, SharePoint, Teams) + HTTPS and TLS inspection, including SSL decryption policies and certificate management. +… more
    CoStar Realty Information, Inc. (06/19/25)
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  • Network Engineer

    SAIC (Chantilly, VA)
    …network and security protocols. + Must have knowledge of networking protocols (IP, TCP , UDP, etc.). + Must have knowledge of enterprise system monitoring tools such ... as Nagios or Solar Winds. + Must have the ability to work on occasional surge support or shift hours, as needed, to support Operations Center. **Desired Qualifications:** + Familiarity with PL5 implementation and systems. + Experience with programming or… more
    SAIC (06/19/25)
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  • Production Engineer

    Meta (Richmond, VA)
    …in the following: 10. 1. UNIX or Linux operating system fundamentals 11. 2. TCP /IP network fundamentals 12. 3. Coding in at least one of the following higher-level ... programming languages: PHP, Python, C++, or Java 13. 4. Software frameworks and APIs 14. 5. Performing 'guerilla capacity planning' for internet service architectures 15. 6. Internet service architectures (such as load balancing, LAMP, or CDN's) 16. 7.… more
    Meta (06/18/25)
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  • Senior Information Security Engineer

    Lumen (Herndon, VA)
    …network design, configuring and troubleshooting of routed and switched networks, TCP /IP, Ethernet, VLAN, IPSec, VPN, and Firewalls. Experience with configuration ... management tools such as Ansible, Chef, etc. Background in system, network, or security admin/engineering on Unix. Active TS clearance with current SSBI/T5R investigation & CI Polygraph. **Compensation** This information reflects the anticipated base salary… more
    Lumen (06/17/25)
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  • Voice Engineer (Expert)

    BAE Systems (Herndon, VA)
    …SIP signaling and call flows + Secure Real-Time Transport Protocol + SIP + MGCP + TCP /IP + H.323 + MPLS + DNS + DHCP + RTP **Preferred Education, Experience, & ... Skills** + SIP signaling and call flows + H.323 + Avaya Communications Certification + Cisco Certified Collaboration Professional **Pay Information** Full-Time Salary Range: $140690 - $239140 Please note: This range is based on our market pay structures.… more
    BAE Systems (06/17/25)
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  • Enterprise IT Support Officer - Dedicated Support

    ManTech (Mclean, VA)
    …business applications used within a business environment. + Familiarity with TCP /IP, general networking issues, virus scanning services (desktop, stand-alone and ... laptop computing services), servers, printers, peripheral devices, installing endpoints including but not limited to desktop IT equipment, printers, VOIP and digital phones, network switches. **Preferred Qualifications:** + Related work experience in a… more
    ManTech (06/15/25)
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  • Penetration Tester

    CACI International (Chantilly, VA)
    …mobile platforms are a plus.** **Solid understanding of networking, TCP /IP, virtualization and cloud/data center architecture.** **Strong familiarity with some ... of the following: OWASP top 10, DoD and NSA Vulnerability and Penetration Testing Standards.** **Knowledge of exploitation concepts including phishing and social engineering tactics, buffer overflows, fuzzing, SQLi, MiTM, covert channels, secure tunneling and… more
    CACI International (06/14/25)
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  • Security Detection Engineer, AWS Security

    Amazon (Arlington, VA)
    …logs, NetFlow) - An understanding of network and web related protocols (such as, TCP /IP, UDP, IPSEC, HTTP, HTTPS, routing protocols) - Ability to develop code with ... at least one modern language, such as Python Preferred Qualifications - Experience creating threat detections in enterprise environments - Experience with analytic development for endpoint and/or network security - Experience using common cloud services (IAM,… more
    Amazon (06/14/25)
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  • Senior Lead - VOIP Engineer

    Sprinklr (VA)
    …Strong knowledge of **VoIP Protocols** (SIP/SDP, RTP/RTCP) **, Networking fundamentals** (UDP/ TCP /IP, DNS, MPLS), **QoS (** latency, jieer, packet loss migration). + ... Hands-on experience with **Session Border Controller (SBC), Media Servers and WebRTC.** + Expert-level understanding of **SIP** , **RTP** , **NAT traversal (ICE/STUN/TURN)** , and VoIP security (TLS,SRTP, fraud preven8on) + Hands-on development experience with… more
    Sprinklr (06/13/25)
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  • IT Support Administrator

    Parsons Corporation (Fort Belvoir, VA)
    …skills (eg PowerShell, Python, Bash). + Knowledge of networking concepts ( TCP /IP, DNS, firewalls). + Experience with monitoring tools (eg, SolarWinds, PRTG, ... Prometheus). + Familiarity with containerization technologies (eg Docker, Kubernetes). + Strong understanding of virtualization technologies (eg VMware, Hyper-V, Azure Virtual Machines, AWS EC2, etc.). + Experience with DevSecOps principles and CI/CD pipelines… more
    Parsons Corporation (06/13/25)
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