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Sr. Network Engineer

Job in New York, New York County, New York, 10261, USA
Listing for: ExecutivePlacements.com
Full Time position
Listed on 2026-01-14
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer, Network Engineer, Network Security
Job Description & How to Apply Below
Location: New York

Overview

We are seeking a highly experienced Senior Network Engineer to support, design, and secure large-scale enterprise network environments. This role is hands‑on and strategic, requiring deep expertise in Cisco networking, security architecture, and full‑lifecycle network implementations. Candidates must have extensive experience working in complex enterprise environments with 5,000 – 15,000+ network nodes
.

Required Qualifications
  • Senior Network Engineer experience in large enterprise environments.
  • Proven hands‑on experience with Cisco SDA and Trust Sec (full‑lifecycle implementation experience strongly preferred).
  • Extensive experience supporting enterprise networks with 5,000 – 15,000+ nodes.
  • 10+ years of hands‑on configuration and support of Cisco routers, switches, and related infrastructure.
  • Experience in complex, multi‑platform, multi‑protocol network environments.
  • Strong background in planning, designing, and documenting Cisco‑based enterprise networks.
  • Expertise in LAN, WAN, MAN, metro Ethernet.
  • Routing, topology, QoS, multicast, and network protocols.
  • MPLS, NAC, VPN, remote access solutions.
  • Firewalls, IDS/IPS, security devices, NAT/PAT.
  • ACS, Adaptive Authentication, Secur

    ID.
  • RADIUS / LDAP / TACACS.
  • Wireless networking.
  • Packet‑level network traffic analysis expertise.
  • Experience with network monitoring, analysis, and management tools.
  • Strong project management, leadership, and interpersonal skills.
  • Ability to work independently while mentoring and leading other engineers.
Preferred

Healthcare industry experience.

Responsibilities
  • Design, architect, and provide engineering support for enterprise network and systems infrastructure.
  • Develop and implement network standards, policies, and procedures.
  • Serve as a technical mentor for Network Engineers and provide team leadership.
Perform Maintenance, Upgrades, And Lifecycle Management Of
  • Routers, switches, firewalls.
  • Remote access systems.
  • Network management and monitoring systems.
Additional Responsibilities
  • Monitor network connectivity and ensure high‑quality, reliable data transmission.
  • Provide technical support across LAN, WAN, MAN, wireless, security, and cloud‑based networks.
  • Manage day‑to‑day network operations and ensure adherence to enterprise SLAs.
  • Evaluate new applications and technologies for impact on existing infrastructure and security posture.
  • Coordinate and support network vulnerability assessments and penetration testing efforts.
  • Implement remediation strategies and threat mitigation solutions.
  • Collaborate with project managers, IT teams, vendors, contractors, and consultants.
  • Participate in security policy creation, reviews, and compliance initiatives.
  • Design, implement, and maintain perimeter and internal network security systems.
  • Own and secure enterprise data networks, including:
    Network perimeter, Remote access, WAN, Data centers, Wired and wireless environments.
  • Identify, troubleshoot, and resolve complex network hardware and software issues.
  • Promote governance, compliance, scalability, performance, and reliability across the network infrastructure.

Seniority level:
Mid‑Senior level

Employment type:

Full‑time
Job function:
Information Technology
Industries:
Advertising Services

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