Senior Network Engineer

Mantech International-posted 3 months ago
Full-time • Senior
San Antonio, TX
5,001-10,000 employees
Professional, Scientific, and Technical Services
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Transform the future of federal services with MANTECH! Join a vibrant, energetic team committed to enhancing national security and public services through innovative tech. Since 1968, we've partnered with Federal Civilian sectors to deliver impactful solutions. Engage in exciting projects in Digital Transformation, Cybersecurity, IT, Data Analytics and more. Ignite your career and drive change. Your journey starts now-innovate and excel with MANTECH! This is for a future opportunity. MANTECH seeks a motivated, career and customer-oriented Senior Network Engineer to join our team in San Antonio, TX. This position supports the medical mission of the DoD and ensures that the highly complex and technical requirements related to the network infrastructure are addressed.

  • Develop, write, and implement network policies, procedures, and best practices for LAN/WLAN/WAN operations.
  • Proactively define and establish minimum standards for network access to ensure optimal overall network performance.
  • Serve as a primary consultant to government staff and partners on LAN/WLAN/WAN design, implementation, deployment, and management.
  • Lead and collaborate with technical specialists and external organizations to quickly resolve complex network issues and ensure the network consistently supports the Military Health System (MHS) mission.
  • Resolve deep-level technical issues across all layers of the OSI model, focusing on network and routing protocols.
  • Utilize advanced network administration and diagnostic tools (e.g., Orion SolarWinds, ARMIS, Ansible).
  • Employ knowledge of Management Information Blocks (MIB) and MRTG to measure performance, plan capacity, and ensure high network availability with minimum downtime.
  • Enhance and maintain network security by managing the LAN/WLAN - WAN barrier systems to prevent unauthorized access.
  • Configure and manage critical security infrastructure, including network firewalls, VPN devices, and Intrusion Detection Systems (IDSs).
  • Bachelor's degree in a technical field and 5+ years of related experience, OR completion of a technical/vocational program and with 10+ years of related experience.
  • Extensive experience with a wide range of networking protocols and technologies, including Layer 2/3 Protocols: TCP/IP, EIGRP, BGP, OSPF, VRRP, RSTP.
  • Common Services: DNS, DHCP, HTTP, HTTPS, SMTP, SNMP.
  • WAN Technologies: PPP, HDLC, V.35, RS-449.
  • Clear understanding of IEEE 802 communications and Internet standards (e.g., 802.1d,802.1q,802.1w,802.3,802.11, etc.).
  • Direct experience with synchronous and asynchronous communications and various network media: Ethernet (Fast, Gigabit), FDDI, and ATM.
  • Demonstrated experience in routed, switched, and shared LAN environments.
  • Proficiency in maintaining environments that utilize: Current supported versions of Microsoft OS, Windows Active Directory, UNIX, and OpenVMS. Routers, switches, and terminal servers. Various local and long-haul WAN connectivity solutions.
  • Familiarity with network diagnostic tools: Optical Time Domain Reflectometer (OTDR), cable testers, and network sniffers.
  • Knowledge of EIA/TIA cable standards and specifications.
  • Experience with DoD Health Care Information Systems.
  • Expertise in Windows networks, Cisco Systems, and Orion SolarWinds; Cisco Certified Network Professional (CCNP) and Certified Information Systems Security Professional (CISSP).
  • Experience with Zero Trust Architectures and methodologies.
  • MANTECH International Corporation considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.
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