Network Security Engineer

The Opportunity

As a Network and Firewall L3 Engineer, you will assist in monitoring, maintaining, optimizing, and performing advanced-level troubleshooting on network and firewall infrastructure, ensuring system stability and security. The position requires onsite presence at both Data Centre (DC) and Office locations.

Roles And Responsibilities

• Carry out advance level configurations and troubleshooting on Network switches, Router and Firewall and networking technologies such as EVPN BGP, VXLAN, SSL VPN, IPSEC VPN, BGP.
• Extend technical support to L1, L2 and clients over the email, tickets, phone and other communications channel.
• 24 * 7 Availability.
• Provide response & resolutions to Incidents, Requests, Changes, Problems as per SLA & in case required escalate as per escalation matrix.
• Handle escalations, Severity Incidents, Critical Projects.
• Work on SIP's, Assignments.
• Adhere to process & procedures.
• Manage & Maintain availability & uptime of infrastructure.
• Prepare Handover checklist, POA, shift reports, KEDB, SOPs, Documentation.
• Collaborate with other team members and other teams to provide resolutions.
• Ensure all task, work done are captured in ticketing systems and are updated accordingly.
• Ensure earlier resolutions to the issue to meet SLA. Experience handling escalations and providing L3-level support/RCA (Root Cause Analysis) for critical incidents.

Primary Skills (Must Have)

• Strong hands-on experience in configuring, managing, and troubleshooting firewalls (e.g., Palo Alto, Fortinet, Cisco ASA/Firepower, Check Point).
• In-depth knowledge of routing and switching concepts (OSPF, BGP, EIGRP, VLANs, STP).
• Strong hands-on experience with BGP (eBGP/iBGP, route reflectors, route policies, path attributes) in Data Centre environments.
• Working knowledge of VXLAN overlay networking (VTEPs, VNI mapping, underlay/overlay design) and EVPN as its control plane, including MAC/IP route advertisement and multi-tenancy.
• Understanding of Spine-Leaf Data Centre fabric architectures built on BGP EVPN VXLAN.
• Expertise in VPN technologies (Site-to-Site, IPSec, SSL VPN, Remote Access VPN).
• Experience with network security concepts - NAT, ACLs, IPS/IDS, DMZ architecture, Zone-Based Firewalls.
• Proficiency in troubleshooting network connectivity, latency, and performance issues at L3 level.
• Sound knowledge of network monitoring tools (SolarWinds, PRTG, Nagios, or similar).
• Hands-on knowledge on load balancers and proxy technologies.
• Familiarity with network documentation, change management, and incident/problem management processes (ITIL framework).
• Experience with DC (Data Centre) network operations, including uptime, redundancy, and failover mechanisms.
• Strong understanding of TCP/IP fundamentals, DNS, DHCP, and network protocols.

Preferred Skills

• Basic understanding of SOC processes - incident detection, triage, and escalation.
• Familiarity with SIEM tools (Splunk, QRadar, ArcSight, or similar) for log monitoring and correlation.
• Exposure to threat intelligence and common attack vectors (DDoS, malware, phishing, lateral movement).
• Ability to correlate network/firewall logs with SOC alerts for effective incident response.
• Knowledge of vulnerability management and patching processes.
• Familiarity with cloud networking concepts (AWS/Azure VPC, VNet, cloud firewalls, hybrid connectivity).
• Awareness of compliance and audit standards (ISO 27001, PCI-DSS) as applicable to network/security infrastructure.
• Certifications such as CCNA/CCNP (Security or Enterprise), PCNSE, Fortinet NSE, or CompTIA Security+ are a plus.

Why This Role is a Unique Opportunity at Neysa

This role offers the opportunity to work on complex, large-scale infrastructure systems that power AI-driven platforms. You will play a critical role in maintaining system reliability, handling high-impact incidents, and shaping operational excellence in a fast-growing AI ecosystem.

You'll gain deep exposure to enterprise infrastructure, automation practices, and next-generation AI workloads while contributing to a high-performance environment.

Team Culture and Inclusion

• Work in a collaborative, high-impact, and fast-paced environment.
• Be part of a culture that values ownership, innovation, and continuous learning.
• Thrive in an inclusive workplace where diverse ideas and perspectives are encouraged.