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Sr. Network Engineer
Sr. Network EngineerSiri InfoSolutions Inc • New York City, New York, USA
Sr. Network Engineer

Sr. Network Engineer

Siri InfoSolutions Inc • New York City, New York, USA
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Job Title : Sr. Network Engineer

Location : New York City NY 4 Days onsite Role

Long Term Project

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.
  • Qualification :

  • Professional with a minimum of 10 years of experience in designing implementing and troubleshooting complex network infrastructures (with focus on Cisco).
  • Bachelors 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.
  • Key Skills

    Load Balancing,Routing Protocols,Network Administration,Network Engineering,BGP,LAN,Computer Networking,IPsec,OSPF,Cisco ASA,Juniper,MPLS

    Employment Type : Full Time

    Experience : years

    Vacancy : 1

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    Sr Network Engineer • New York City, New York, USA

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