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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # IT Sr Consultant 5 - Cisco Infrastructure Architect - **Company:** NineFX, Inc. - **Location:** Fort Meade, MD, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Microsoft Access, Apple IOS, User Authentication, Bash Shell, Border Gateway Protocol, BIND, Cisco PIX, Cisco Hardwares, Cisco Routers, Complex Networks, Cyber Security, Dynamic Host Configuration Protocol, Linux, Domain Name System (DNS), Enhanced Interior Gateway Routing Protocol, Monitoring of Systems, Hot Standby Router Protocol, Virtual Private LAN Services, Systems Analysis, IP Routing, Traceroute, Virtual Private Networks (VPN), Multi-protocol Systems, Network Security, Network Troubleshooting, CURL, Simple Mail Transfer Protocols, Microsoft Visio, Network Configuration and Change Management, Network Architecture, Network Planning and Design, Routing, Nmap, Open Shortest Path First (OSPF), OpenSSL, Reverse Engineering, TCP/IP, Transmission Control Protocol (TCP), Tcpdump, Trivial File Transfer Protocols, Wireshark, Virtual Local Area Networks, Network Routers, Diagnostic Tools, Scripting, VLAN Trunking Protocol (VTP), Computer Networking Systems, Firewalls (Computer Science), Low Latency, Cisco Switches, Cisco - **Published:** July 26, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9057972/it-sr-consultant-5-cisco-infrastructure-architect ## About the Role * Active TS/SCI with Full Scope Polygraph (must already be held) * Bachelor's Degree + 12 years relevant experience * Associate Degree + 15 years relevant experience * High School Diploma/GED + 20 years relevant experience * IAT Level II (Security+ CE, GSEC, CySA+, CCNA Security, or GICSP) * Deep expertise with Cisco Routers, Switches, and ASA Firewalls * Strong understanding of TCP/IP, DNS, DHCP, SMTP, and routing protocols * Experience with Linux-based troubleshooting tools * Strong documentation, architectural planning, and presentation abilities * Ability to lead and mentor junior engineers in a fast-paced environment ## Description We are seeking a highly experienced IT Senior Consultant (Level 5) to provide expert-level technical leadership, systems analysis, architectural design, and operational oversight for complex networks and enterprise-level infrastructure. This position requires deep knowledge of Cisco networking technologies, cross-domain solutions, Linux-based troubleshooting, and enterprise-level security best practices. The Senior Consultant will oversee network architecture upgrades, mentor junior engineers, lead large-scale technical projects, and serve as the primary expert for critical network issues and high impact operational decisions., Leadership & Oversight * Provide daily oversight, mentoring, and advanced guidance to entry-level engineers. * Document network issues, solutions, and architectures using Visio. * Provide Tier 3 support, including on-call/after-hours response. Network Architecture & Design * Review and recommend improvements to network designs, maintenance plans, and implementations. * Lead the design, deployment, documentation, and implementation of new network requirements. * Direct and execute major network architecture upgrades, including white paper development. * Reverse engineer systems to define specifications, interfaces, and integration requirements. * Design, build, and integrate systems and networks into customer infrastructures. * Create router/switch templates for network standardization. Cisco Infrastructure Engineering * Perform advanced fault analysis, isolation, correction, and upgrades for Cisco routers, switches, and ASA firewalls. * Configure, maintain, and troubleshoot Cisco Catalyst switches (STP, Port Security, VTP, EtherChannels, VLANs). * Configure and troubleshoot Cisco ASR routers (HSRP, OSPF, BGP, route maps). * Configure and troubleshoot Cisco ASA firewalls, ACLs, NAT, and related security rules. * Install and upgrade Cisco switches and ASA IOS using TFTP. * Implement SSH/RADIUS authentication on Cisco hardware. Advanced Network Configuration & Protocols * Configure MPLS/VPLS, OSPF, EIGRP, and Access-layer switching architectures. * Troubleshoot DNS, SMTP, IP routing, latency, and connectivity issues. * Implement and maintain TCP/IP services (DHCP/DNS). * Support cross-domain network solutions including VPNs, one-way transfers, mission systems, and Taclane 175 encryption devices. Security & Systems Operations * Oversee software and network security operations. * Troubleshoot HTTP/SSL/TLS issues. * Configure and troubleshoot BIND, DHCP, DNS servers. * Troubleshoot network issues using protocol analyzers. Diagnostics, Scripting & Performance * Monitor system performance and implement tuning improvements. * Use Linux tools (tcpdump, ssldump, curl, wget, mtr, tcp traceroute, nmap, openssl, tshark) for advanced diagnostics. * Develop Bash or Python scripts to automate troubleshooting and analysis tasks. Project Leadership & Management * Manage project work in alignment with government leadership. * Lead medium-to-large complex projects and major phases of enterprise programs. Expert Technical Guidance * Deliver specialized engineering guidance and advanced solutions to complex IT challenges. * Prepare detailed technical reports, white papers, and presentations for executive stakeholders. ## Related Videos - [JavaScript the Grumpy Parts](https://www.wearedevelopers.com/videos/306-javascript-the-grumpy-parts) - [Don’t Insert Crazy! 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