What are the responsibilities and job description for the Senior Network Engineer (Cisco ACI EXP) position at Accrescent Group?
We are seeking a hands-on Senior Network Engineer one of a client with deep expertise in Routing & Switching, Cisco ACI, and VxLAN/EVPN (must-have). The ideal candidate will lead the design, deployment, and operations of modern data center and campus networks and bring strong capabilities in either NetDevOps/Automation (Python, Ansible, CI/CD) or VMware NSX for overlay/SDN.
Job Description:
Key Responsibilities: Architecture & Design: o Design and implement L2/L3 networks across DC and campus environments. o Lead ACI/VxLAN/EVPN fabric designs (Multi-pod/Multisite, route types, control-plane considerations). o Create high-availability designs (ECMP, MLAG/vPC, BGP/OSPF/IS-IS). / Deployment & Operations: o Configure and maintain leaf-spine architectures, border gateways, and interconnects. o Troubleshoot complex issues across underlay/overlay, control plane, and data plane. o Perform capacity planning, performance tuning, and proactive monitoring.
Skill Requirements: Bachelor's in CS/EE/IT or equivalent experience. / Certifications (preferred): CCNP/CCIE, JNCIP/JNCIE, Arista ACE, VMware VCP-NV. / Experience: 8 years in network engineering; 4 years hands-on VxLAN/EVPN.
Skill Requirement : Must-Have Skills / Routing & Switching: BGP, OSPF/IS-IS, eBGP/iBGP, route redistribution, policy-based routing, QoS. / Data Center Fabrics: VxLAN/EVPN (mandatory) with practical experience in DC leaf-spine design. / Vendor Proficiency: One or more—Cisco (Nexus/IOS-XE), Arista EOS, Juniper QFX/EX. / Troubleshooting: Packet analysis, control-plane convergence, FIB/ARP/ND, MTU/MSS, ECMP. Preferred - NetDevOps / Automation / Python (requests, netmiko/paramiko, NAPALM, pyATS), / Ansible (Jinja2, inventories, roles), / Version control (Git), CI/CD (GitHub Actions/GitLab CI), / Network source of truth (Nautilus/NetBox), / Telemetry/observability (SNMP, gNMI, streaming telemetry, Prometheus, Grafana). VMware NSX (SDN) / NSX-T design and operations: T0/T1 gateways, segments, overlay transport zones, / Distributed firewall, security groups, micro-segmentation, / Integration with physical gateways, north-south routing, / Edge clusters, load balancer, policy automation. Nice-to-Have / EVPN route types (RT-2/RT-5), IRB, symmetric/asymmetric routing, / Multisite/Multipod EVPN, DCI, MPLS L3VPN, / SD-WAN (Viptela, Prisma, Fortinet), / Cloud networking (AWS TGW, Azure vWAN, GCP VPC), / Firewalls (Palo Alto, Fortinet, Cisco ASA/FTD), NAC (ISE/Aruba ClearPass).