Role :Sr. Network Engineer
Location:New York City, NY - Local only
Exp: 10+ Years
Skills:Cisco Routing & Switching, Cisco Nexus & Data Center Networking, Cisco ACI (Application Centric Infrastructure),Nexus 5K/7K/9K platforms and NX-OS
Job Description:
Who are we looking for?We are seeking a highly experienced Network Engineer with a strong background in Cisco networking technologies, campus data center, network design, and network automation. The ideal candidate should have 10+ years of experience in designing, building, and managing large-scale enterprise networks - preferably in financial services or other mission-critical environments. This role demands deep technical expertise, leadership skills, and hands-on experience in implementing and maintaining complex network infrastructures.
Indicative Activities:
- Lead the design, architecture, and deployment of enterprise-scale network infrastructure, including LAN, WAN, and data center networks.
- Manage Cisco routers, switches, Nexus series, and Cisco ACI fabrics in production environments.
- Define and enforce network standards, policies, and best practices to ensure security, scalability, and high availability.
- Drive network automation initiatives to enhance operational efficiency and reduce manual intervention.
- Collaborate with cross-functional teams for new implementations, migrations, and major upgrades.
- Lead troubleshooting and root cause analysis (RCA) for complex network incidents and outages.
- Oversee and validate configurations for firewalls (Palo Alto), load balancers (F5), and IPAM/DNS/DHCP (Infoblox) systems.
- Prepare HLDs (High-Level Designs) and LLDs (Low-Level Designs) and maintain comprehensive network documentation.
- Support capacity planning, performance tuning, and lifecycle management of network infrastructure.
- Ensure regulatory compliance and adherence to internal security and change management processes.
Technical Skills:
Must Have
- Cisco Routing & Switching - Deep understanding of BGP, OSPF, EIGRP, STP, VLANs, HSRP, and QoS.
- Cisco Nexus & Data Center Networking - Hands-on experience with Nexus 5K/7K/9K platforms and NX-OS.
- Cisco ACI (Application Centric Infrastructure) - Design, configuration, and policy-based automation.
- Network Automation - Experience with tools like Python, Ansible, or Cisco DNA Center.
- High Availability and Redundancy Design for critical network components.
- Troubleshooting & Performance Optimization across enterprise environments.
- Proven experience managing medium-to-large-scale enterprise networks (preferably financial organizations).
Good To Have
- Exposure to Palo Alto Firewalls (policy management, Panorama).
- Experience with F5 Load Balancers (LTM, GTM configuration and troubleshooting).
- Knowledge of Infoblox DDI (DNS, DHCP, IPAM).
Familiarity with SDN solutions and Cloud Networking.- Understanding Network Security Principles and compliance frameworks (e.g., PCI-DSS).
- Scripting or orchestration experience for CI/CD-based network automation.
Process Skills:
- Proficiency in ITIL-based operational processes - Incident, Problem, Change, and Configuration Management.
- Ability to develop and maintain standard operating procedures (SOPs), runbooks, and technical documentation.
- Experience with project delivery methodologies and stakeholder communication during large-scale implementations.
- Ensure adherence to governance, compliance, and audit requirements.
- Conduct technical design reviews, risk assessments, and post-implementation validation.
Behavioral Skills:
- Strong analytical thinking and problem-solving ability in complex technical environments.
- Excellent communication and presentation skills across technical and business audiences.
- Demonstrated leadership in project execution and mentoring of junior network engineers.
- High degree of ownership, accountability, and attention to detail.
- Flexible and adaptive to changing business needs and technologies.
- Collaborative and team-oriented, fostering cross-functional partnerships.
Qualification:
- Professional with a minimum of 10+ years of experience in designing, implementing, and troubleshooting complex network infrastructures (with focus on Cisco).
- Bachelor's degree in computer science, Information Technology, or a related field.
- Cisco CCNP / CCIE (Routing & Switching or Data Center)
- Palo Alto PCNSE, F5-CA / F5-CTS, or Infoblox NIOS certifications (optional but advantageous).
- Demonstrated experience working in medium to large scale network deployments.