Core4ce is looking for a SD-WAN Engineer Subject Matter Expert (SME) Responsibilities: Administration Attending planning sessions to understand business and technical requirements. Adhering to and following change management policies that facilitate a stable, well-documented network infrastructure that meets organizational requirements. This includes the creation, submission, review, and periodic representation of complex changes in weekly change management meetings. Documenting projects, support actions and other administrative artifacts to serve as reference material for fellow engineers and management staff Ensuring incidents and service requests adhere to established service level agreements (SLAs). Pursuing professional development opportunities through certifications, training, or conferences that enhance both technical and non-technical skillsets relevant to their role within the organization. Submitting written and verbal status reports as requested to management staff. Network Administration Lead the deployment and sustainment of our enterprise Cisco Software Defined Wide Area Network (SD-WAN) infrastructure. Deploy, configure, and manage SDN controllers and associated network components to build a cohesive, automated, and policy-driven network Serve as a high point of escalation for complex issues related to overlay networks, fabric management, and network virtualization. Resolve complex routing anomalies and analyze traffic flows to ensure maximum up time Create and maintain detailed network documentation, diagrams, and standard operating procedures. Provide technical guidance and mentorship to junior engineers. *This position is designed to be flexible, with responsibilities evolving to meet business needs and enable individual growth. Qualifications: Must be able to obtain TS security clearance. Deep understanding of the Cisco SD-WAN fabric architecture (vManage, vSmart, vBond, and WAN Edge routers). Proven expertise in designing, deploying, and managing the Cisco SD-WAN (Viptela) solution. In-depth knowledge of routing protocols, including OMP, BGP, OSPF, and EIGRP Strong understanding of core networking concepts such as LAN/WAN, VPN, QoS, and network security. Working knowledge of IPsec, TLS (Transport Layer Security), and firewall configurations. Excellent analytical and problem-solving skills, with the ability to troubleshoot complex network issues Experience with Public Key Infrastructure (PKI) components including certificate authorities, hardware security modules, certificate revocation lists, certificate requests, and certificate installation Advanced knowledge of networking and systems administration; and the ability to troubleshoot problems Experience with traffic monitoring tools such as TCPDump, Wireshark as well as analyzing network traffic. Knowledge and experience working with Virtual Private Networks (VPN), Intrusion Prevention Systems (IPS), and associated technologies preferred Experience with VXLAN network overlays Should be capable of organizing, tracking and managing multiple projects and deadlines Preferred applicants will also be familiar with government information assurance standards including DISA STIGs, NIST 800-53, IAVAs management, auditing and accreditation processes. Preferred: Experience with the design and architecture of a global SD-WAN infrastructure, with a focus on scalability, optimization, performance, and security while ensuring low latency, high availability, and efficient traffic routing. Experience deploying and configuring Cisco SD-WAN (Viptela) components, including Manager, Controller, Validator, and cEdge routers. Experience deploying, configuring and managing Cisco IOS XE routers in autonomous mode. B.A or B.S. in a degree such as Computer Science, Information Systems or Information Technology or 7 years related experience. 7-10 years of experience in network engineering, with a minimum of 3-5+ years of hands-on experience with enterprise routing, switching, and security, specifically in software-defined network (SDN) design and legacy WAN migration. Experience working in a healthcare environment. 8570 Compliant / CCNA OS cert Why Work for Us? Core4ce is a team of innovators, self-starters, and critical thinkers—driven by a shared mission to strengthen national security and advance warfighting outcomes. We offer: 401(k) with 100% company match on the first 6% deferred, with immediate vesting Comprehensive medical, dental, and vision coverage—employee portion paid 100% by Core4ce Unlimited access to training and certifications, with no pre-set cap on eligible professional development Tuition assistance for job-related degrees and courses Paid parental leave, PTO that grows with tenure, and generous holiday schedules Got a big idea? At Core4ce, The Forge gives every employee the chance to propose bold innovations and help bring them to life with internal backing. Join us to build a career that matters—supported by a company that invests in you. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy), national origin, disability, veteran status, age, genetic information, or other legally protected status.