Sr. Network Engineer

job title : sr. network engineer

location :  onsite- boston, ma

job description :

we are seeking a highly skilled senior network engineer with over 15 years of experience in designing, deploying, and maintaining enterprise network and security infrastructure. the ideal candidate should have deep expertise across routing, switching, network security, sd-wan, cloud technologies, and network automation. this role requires hands-on experience with cisco, palo alto, juniper, and fortinet devices in complex enterprise and data center environments.

mandatory skills : sd-wan

cisco routing & switches

designing implementation

security

key responsibilities :

design, implement, and manage complex enterprise network architectures across data centers and cloud environments (aws, azure, gcp (any 1 cloud experience is fine)).

configure and troubleshoot routing protocols (bgp, ospf, eigrp, is-is) and layer 2 technologies (vlan, stp, vtp, etherchannel).

manage, maintain, and optimize next-generation firewalls (cisco asa / ftd, palo alto pa series, fortinet fortigate).

administer vpns (ipsec, ssl), dmvpn, globalprotect, and remote access solutions.

deploy and support cisco sd-wan (vmanage, viptela), meraki, and aruba sd-branch solutions.

configure and support cisco ise, acs, clearpass, and nac policies for secure network access.

support data center technologies including cisco aci, nexus (7k / 5k / 2k), spine-leaf architecture, and vxlan evpn.

manage ddi solutions (dns, dhcp, ipam) using infoblox, bluecat.

work with f5 ltm / gtm load balancers, big-ip, big-iq, and implement ssl offloading and traffic steering.

monitor and analyze network / application performance using tools like solarwinds, nagios, wireshark, and servicenow.

perform firewall audits, vulnerability assessments, and implement secure access policies per standards (nist, iso27001, hipaa, soc2).

automate network provisioning and monitoring using python, ansible, and rest apis.

prepare detailed network documentation including visio diagrams, port matrices, and security configurations.

required skills :

strong expertise in cisco routing / switching (ios, nx-os, ios-xe / xr), juniper (junos), arista (eos).

proficient with network security tools : cisco firepower, panorama, fortimanager, checkpoint, zscaler, prisma access.

hands-on with wireless solutions : cisco wlcs (5508 / 4400), aruba central, aruba clearpass.

familiar with siem, ids / ips, dlp, penetration testing, and industry frameworks (pci-dss, nist 800, soc, hipaa).

cloud networking experience : azure vnets, aws vpcs, vpn gateways, route53, load balancers.

experience with virtualization : vmware vsphere, hyper-v, nsx-t, and network micro-segmentation.

strong scripting and automation skills using python, ansible, shell.

excellent troubleshooting and problem-solving skills in multi-vendor environments (cisco, palo alto, juniper, f5)