Senior Network Engineer - SD-WAN Jobs

Senior Network Engineer - SD-WANMantech seeks a motivated, career and customer-oriented Senior Network Engineer - SD-WAN to join our team in Doral, FL. Responsibilities include but are not limited to: Oversee the implementation and maintenance of enterprise project with the following technologies, Versa SD-WAN (Thunderdome architecture), Secure Access Service Edge (SASE), Zero Trust Network Access (ZTNA), Micro-segmentation and policy enforcement, IPSec encrypted overlays and TLS secure tunnels, Application-aware routing and dynamic path selection, Secure multi-enclave integration Design and deploy enterprise network infrastructure: Cisco ISR / ASR routing platforms, Cisco Catalyst (9300/3850) and NX-OS switching, Cisco ASA firewall operations, Layer 2 / Layer 3 segmentation design, VLAN architecture and trunking strategies, DHCP Snooping and Dynamic ARP Inspection, Port-channel design and high availability, Routing protocols: OSPF, EIGRP, BGP, STIG compliance and CCRI readiness and Configuration hardening per DoD cybersecurity standards Manage application delivery and security: F5 BIG-IP LTM / GTM administration, SSL/TLS offloading and certificate lifecycle management, iRules and advanced traffic policy configuration, High-availability clustering and failover design, Secure application publishing, Load balancing across multi-tier architectures Oversee DNS, DDI and IP address management: Infoblox Grid architecture, Internal and external DNS services, Enterprise DHCP across secure enclaves, IPAM governance and automation Maintain operational leadership and mission impact: Plan and execute ASIs with zero mission-impact downtime, lead Cisco lifecycle upgrades (Catalyst / NX-OS platforms), support DISA NAV assessments and remediation of CAT I / CAT II findings, integrate SolarWinds monitoring post-migration for enhanced operational visibility, coordinate cross-functional teams across engineering, cybersecurity, and operations Minimum Qualifications: BA/BS in field necessary to assume Senior Network Engineer duties and Nine (9) or more years of professional experience High School Diploma and 4 years of additional experience or Associate's Degree and 2 years of additional experience may be exchanged in lieu of a required Bachelor's degree A candidate holding a relevant Master's degree may be granted 2 years' experience credit for that extra education. A candidate holding a relevant PhD degree may be granted 4 years' experience credit for that extra education. A minimum of five (5) years of relevant Network Engineering experience. Hold at least one of the following certifications: CCNA, CCNP, CCNP Security, CCIE, Versa SD-WAN Certified Associate/Professional Deep technical expertise across Versa Networks (Thunderdome architecture), Cisco enterprise infrastructure, F5 BIG-IP application delivery platforms, and Infoblox DDI solutions. Desired Qualifications: Master's degree or PhD in Information Technology, Cybersecurity, Computer Science, or related field. Experience with advanced networking technologies and techniques. Demonstrated ability to lead complex lifecycle upgrades, execute Authorized Service Interruptions (ASI), remediate STIG findings, and maintain operational continuity in highly regulated, high-visibility environments. Experienced supporting DISA Network Assistance Visits (NAV), CCRI preparation, and enterprise security compliance initiatives. Extensive experience designing, securing, and sustaining mission-critical DoD enterprise networks in direct support of Combatant Command operations. Proven expertise in SD-WAN, Zero Trust architecture, secure enclave segmentation, and modernization of high-availability infrastructure across CONUS and OCONUS environments. Clearance Requirements: Must have an active Secret clearance. Physical Requirements: Must be able to remain in a stationary position 50% Needs to occasionally move about inside the office to access file cabinets, office machinery, etc. Frequently communicates with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations.