Sr Network Infrastructure Engineer Jobs in Texas

Senior Network Engineer Full Time, San Antonio, TX Secret Clearance Position Overview We are seeking a Senior Network Engineer to support the Defense Health Agency (DHA) in delivering secure, resilient, and high-performance network infrastructure across Medical Treatment Facilities (MTFs) worldwide. This position directly supports the Department of Defense medical mission by ensuring highly complex LAN/WLAN/WAN infrastructure is properly engineered, secured, optimized, and maintained to meet DHA and Military Health System (MHS) requirements. The Senior Network Engineer serves as the premier network subject matter expert (SME) for the CONUS region and acts as a global point of contact for advanced network engineering issues. Key Responsibilities * Serve as the senior technical authority for LAN/WLAN/WAN network infrastructure across DHA medical facilities. * Identify, research, and resolve complex network and routing protocol issues at all layers of the OSI model. * Provide high-level installation, configuration, documentation, optimization, and troubleshooting of enterprise network systems. * Act as the primary point of contact for: * Network configuration management * Communications interconnection * Addressing and multi-protocol routing * Network management and optimization * Utilize enterprise tools including: * Orion SolarWinds * ARMIS * Ansible * Monitor and optimize network performance using MIBs, MRTG, and related performance management methodologies. * Establish and configure network security systems including: * Firewalls * VPN appliances * Intrusion Detection Systems (IDS) * Maintain and enhance LAN/WLAN/WAN boundary protections to prevent unauthorized access to MTF systems. * Develop, update, and enforce network standards in coordination with the Network Standards Team. * Provide written technical recommendations, policy updates, and network enhancement documentation. * Evaluate vendor products and recommend solutions aligned with DoD and DHA requirements. * Advise and consult with Government personnel and contractor teams on network design, deployment, and optimization. * Communicate status updates and technical findings to leadership, medical stakeholders, and technical teams. * Lead and mentor Network Specialists and engineering personnel as required. Education & Experience * Bachelor's Degree in Computer Science, Engineering, or related technical field * Minimum 5 years of directly related experience OR * Completion of a certified Technical or Vocational School * 10 years of progressively complex, directly related experience Required Qualifications * Active Secret Security Clearance * Compliance with DoD Directive 8570.01 * IAM Level III certification (or equivalent per DoD 8570.01-M) * CISSP (Certified Information Systems Security Professional) – Required * Cisco Certified Network Professional (CCNP) – Required * Experience supporting DoD Health Care Information Systems * Ability to perform duties of subordinate labor categories when required, including travel Technical Expertise Required Demonstrated mastery of enterprise networking protocols and standards, including but not limited to: Protocols & Services * TCP/IP * HTTP / HTTPS * SMTP * SNMP * DNS / DHCP * RSTP / VRRP * EIGRP / BGP / OSPF * PPP / HDLC * XDM * BIND IEEE & Communications Standards * 802.1d, 802.1q, 802.1w * 802.3, 802.3u, 802.3z * 802.5, 802.10, 802.11 Network Environments & Media * Ethernet / Fast Ethernet / Gigabit Ethernet * FDDI / ATM * Synchronous and asynchronous communications * V.35 / RS-449 * Routed, switched, and shared LAN environments * Local and long-haul WAN connectivity Systems & Platforms * Microsoft Windows Server environments * Active Directory * UNIX * OpenVMS * Enterprise Cisco network infrastructure * SolarWinds Orion Tools & Testing Equipment * Optical Time Domain Reflectometer (OTDR) * Cable testers * Network analyzers/sniffers * EIA/TIA cabling standards Desired * Experience with Zero Trust Architectures and methodologies Communication Requirements * Strong verbal and written communication skills * Ability to effectively engage: * Government leadership * Medical professionals * Highly technical engineering teams * Experience producing formal technical documentation, standards, and policy recommendations About Semper Valens Solutions: Semper Valens Solutions, Inc. (SVS) is a Service-Disabled Veteran Owned Small Business (SDVOSB) providing Cost Effective Software and Systems Engineering, Field Support, Training and Full Life cycle Support Management to the DOD and VA community. At Semper Valens, our vision is to remain a creative, cutting edge and cost-effective solutions provider where our shared intellect, industry experience, and technology excellence, make a positive difference in our customer's success. Our solutions help bridge the gap between IT and business prioritizations to optimize budgets, risks, and operational processes. We search for outstanding technical professionals, hiring at all levels of the experience spectrum; intermediate, journeyman and senior. Consider us for your career plan. Semper Valens Solutions is an Equal Opportunity Employer Semper Valens Solutions proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment because of race, color, sex, religion, age, sexual orientation, gender identity and expression, national origin, marital/parental status, pregnancy/childbirth, or related conditions, physical or mental disability, genetic information, status as a Disabled Veteran, Recently Separated Veteran, Active-Duty Wartime or Campaign Badge Veteran, Armed Forces Services Medal, or any other characteristic protected by law. If you require a reasonable accommodation to apply for a position with Semper Valens Solutions through its online applicant system, please contact Semper Valens Solutions Human Resources Department at (830) 899-6870. Semper Valens Solutions is an affirmative action/equal opportunity employer - minorities, females, disabled, and protected veterans are urged to apply. Applicants have rights under Federal Employment Laws. All Jobs at Semper Valens Solutions: https://sempervalens.com/careers