Job Title: Senior Network Infrastructure Engineer
Location: Brooklyn, NY 11201
Duration: 24 Months
Rate: $75 - $80/hour
Work Location: Brooklyn, NY 11201
We are seeking an experienced Senior Network Infrastructure Engineer to support day-to-day operational needs and contribute to several key IT initiatives. The successful candidate will play a vital role in modernizing and optimizing the organization’s networking and infrastructure systems across administrative buildings and data centers.
NGN Site Refresh: Collaborate with internal teams and vendors to upgrade administrative buildings with advanced networking and wireless technologies.
Data Center Modernization: Participate in the upgrade and modernization of core data centers, including the implementation of a hybrid cloud architecture.
Application Support Services: Work closely with application teams to provide load-balancing, problem resolution, and performance testing support.
Lead network administration activities: equipment installation, configuration, upgrades, and troubleshooting.
Configure and maintain Cisco network equipment: Nexus, ASR, ACI, Catalyst, and SDWAN.
Provide design and support for Cisco ASA and FirePOWER firewalls, including VPNs and tunneling protocols (AnyConnect, isakmp/IKEv2, IPSEC, GRE).
Implement and support routing protocols and network technologies such as BGP, EIGRP, OSPF, VXLAN, STP, TCP/IP, QoS, and VLANs.
Collaborate on application load balancing with F5 and NSX Load Balancer (Avi Networks).
Perform deep packet inspection using tools such as Wireshark, tcpdump, and Netscout.
Manage Azure and AWS cloud networks and firewall configurations.
Support the planning, upgrading, and monitoring of network security measures.
Resolve outages with vendors and meet SLA requirements.
Document procedures and network diagrams using Visio or Lucidchart.
8+ years configuring and troubleshooting Cisco routers/switches (Nexus 9k/7k/5k, ASR, Catalyst, ACI)
8+ years with routing protocols (BGP, OSPF, EIGRP)
5+ years in network security (Cisco ASA & Firepower)
5+ years with F5 Load Balancing (LTM, GTM, BIG-IQ)
5+ years of packet analysis
Experience with SDWAN, vManage, Meraki
Hands-on experience with VMware NSX and NSX Advanced Load Balancer
Strong background in Azure/AWS cloud infrastructure and ExpressRoute
Experience with Splunk SIEM and SPL
Knowledge of and commitment to implementing network security best practices
Relevant certifications (e.g., CCNP, VMware)
Prior experience supporting education sector projects is preferred
Excellent communication skills, both written and verbal
Strong documentation and process orientation
Self-motivated and able to work independently or in a team
Must provide three professional references with the submission.
Local candidates preferred due to onsite requirements.