Network Engineer

Responsibilities Design and maintain Cisco ACI (Application Centric Infrastructure) environments, including Multi‑Pod and Multi‑Site connectivity. Deploy and tune InfiniBand (Subnet Managers, Leaf/Spine topology) and RoCEv2 (RDMA over Converged Ethernet) to support low‑latency requirements. Configure and troubleshoot complex BGP, OSPF, and EVPN‑VXLAN deployments across a multi‑vendor landscape. Optimize Quality of Service (QoS) and Priority Flow Control (PFC) to prevent congestion in RDMA‑heavy environments. Collaborate with systems teams to integrate networking with VMware NSX, KVM, or Hyper‑V, ensuring seamless East‑West traffic flow. Analyze telemetry data to forecast bandwidth needs for massive data ingest and high‑speed storage arrays (NVMe‑oF). Required Qualifications Bachelors Degree in computer science or related field or equivalent experience. Minimum of 1 to 15 years of related experience. Enterprise/Data Center networking with a focus on spine‑leaf architectures. Proficiency with high‑density switching platforms (e.g., Cisco Nexus, Arista, or NVIDIA). Active/Current CompTIA Security+ CE, ISC² SSCP, or equivalent baseline certification. Ability to obtain Special Access Program (SAP) eligibility and maintain program access as required. U.S. Citizenship required; Must possess (or be able to obtain and maintain) a DoD Top Secret clearance with SCI eligibility including successful completion of a Counterintelligence (CI) Polygraph within 180 days of start date. Applicant selected will be subject to a government security investigation and must meet eligibility requirements for access to classified information. Preferred Qualifications Enterprise/Data Center networking with a focus on spine‑leaf architectures. Active DoD Top Secret Clearance with SCI and a Counterintelligence (CI) Polygraph with willingness to meet Special Access Program (SAP) eligibility requirements. CCNA Routing & Switching or higher, NVIDIA Networking, etc. Demonstrated experience with HPC Clusters. Knowledge of NVMe over Fabrics (NVMe‑oF) and Fiber Channel over Ethernet (FCoE). Ability to manage network state using Ansible, Terraform, or Python (Netmiko/NAPALM). Direct experience implementing RoCEv2 in a Lossless Ethernet environment using DCB/PFC. Nutanix, KVM, Citrix, or similar. Benefits Learn about our employee‑centric culture and benefits here: EEO Statement COLSA Corporation is an Equal Opportunity Employer, Minorities/Females/Veterans/Disabled. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, or national origin. #J-18808-Ljbffr