Sr. Data Center Network Engineer

Job ID: 112795
Location: New York, , New York  [Hybrid]
Category: Infrastructure
Employment Type: Contract
Date Added: 06/09/2026
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Role Summary
A Senior Network Engineer specializing in data center and core network infrastructure is responsible for planning, executing, and validating network decommissioning projects. This role involves working within change-controlled environments to ensure seamless migration and decommissioning of networking equipment. The position requires technical expertise in routing, switching, and data center technologies, with a focus on maintaining service continuity throughout project lifecycle phases.

Responsibilities

  • Conduct comprehensive network audits to identify devices scheduled for decommissioning.
  • Back up configurations, VLAN databases, and routing tables prior to device retirement.
  • Design and implement traffic migration strategies to reroute services efficiently before decommissioning.
  • Decommission routers, switches, and firewalls, updating network diagrams and topology documentation accordingly.
  • Migrate legacy infrastructure such as Catalyst 6500 and Brocade platforms to modern solutions like Nexus 7K/5K/2K as part of consolidation efforts.
  • Lead terminal server consolidation and optimize out-of-band access methods.
  • Perform post-migration validation to confirm service continuity and resolve issues.
  • Operate within change-dependent environments, securing CAB approval for all modifications.
  • Collaborate with cross-functional teams to coordinate decommissioning timelines and ensure project milestones are met.
  • Maintain up-to-date documentation of network topology and configuration changes in line with best practices.

Qualifications

  • Proven experience with network audits, device decommissioning, and migration projects.
  • Strong technical background in routing protocols such as OSPF, BGP, EIGRP, and MPLS.
  • Proficiency with switching technologies including VLANs, VTP, STP/MSTP, EtherChannel, vPC, VDC, and OTV.
  • Hands-on experience working with Cisco Nexus (9K, 7K, 5K, 2K), Catalyst (6500, 9300, 4500), and ASR routers.
  • Knowledge of data center fabric technologies, including Cisco ACI, EVPN, and VXLAN.
  • Familiarity with Juniper MX/EX switches and routers is a plus.
  • Experience with F5 BIG-IP LTM/GTM and scripting/automation tools such as Python and Ansible.
  • Proficiency with network diagramming tools like Visio.
  • CCNP certification required; CCIE Data Center preferred.
  • Additional certifications such as PMP or ITIL Foundation are advantageous.
  • Ability to work effectively within change management processes and cross-team collaborations.
  • In compliance with federal law, all persons hired must verify their identity and eligibility to work in the United States and complete the required employment eligibility verification form upon hire. Candidates must be legally authorized to work in the United States without employer sponsorship, now or in the future.

Publishing Pay Range: $68.97 – $74.32 Hourly
This is a fully remote role and can be performed from an approved location.

About GDH:
At GDH, we believe in the power of people and the importance of caring. Our culture statement, “We care about people,” isn’t just a tagline – it’s the core of everything we do. GDH is a premier staffing and talent solutions company dedicated to helping businesses find the best talent and assisting job seekers in finding their dream jobs.

Who We Are:
GDH, founded in 2001, has grown into a leader in providing staffing solutions across various industries. We specialize in IT across several sectors, connecting top talent with leading enterprises. As a Best of Staffing firm recognized for excellence in client, employee, talent, and women’s services, we pride ourselves on our commitment to quality and service.

GDH Benefits

GDH offers a range of employee benefits that are designed to promote well-being and help maintain a healthy work-life balance. These comprehensive benefits cover various aspects of an employee’s life and aim to enhance their overall experience with the company. Our health benefits include three medical insurance options with access to KISx Card, Zero Card, and HealthJoy concierge services. Other plan offerings include dental, vision, life, disability, supplemental insurance, and pet insurance plans. Enjoy additional perks like holiday pay, 401(k) plan, direct deposit, an employee referral program, work-life balance benefits, a Wellbeats membership, a discounted gym membership program, and more!  For more detailed information on benefits, please go to GDH’s website under the tab for candidates.

GDH provides equal employment opportunities (EEO) to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, gender, sex (including pregnancy), sexual orientation, gender identity, national origin, age, disability, genetic information, marital status, ancestry, protected veteran status, military or uniformed service member status, or any other status or characteristic protected by applicable federal, state, and local laws. Applicants with disabilities who require an accommodation or assistance in applying and/or for interviewing, please contact our HR Department.

Please visit our notice of collection for California applicants.

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