Network Security Engineer

Job Description

Job Title: Network Security Engineer L3 – Service Operations Type: Onsite, Rotational Shift (24×7) Job Level: L3 Reporting to: Team Lead

Our Purpose

India is in the middle of an extraordinary AI revolution. Neysa exists to democratize AI, built in India for the world, and helps organizations across sectors confidently adopt, accelerate, govern, and scale AI.

Who We Are

Co-founded by Sharad Sanghi and Anindya Das, Neysa combines deep expertise in cloud, AI infrastructure, and cybersecurity. Its flagship product, Neysa Velocis, is a full-stack system built for modern AI.

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, routers, and firewalls, including EVPN, BGP, VXLAN, SSL VPN, IPSEC VPN.
• Extend technical support to L1, L2 and clients over email, tickets, phone and other channels.
• 24 x 7 availability.
• Provide responses and resolutions to incidents, requests, changes, and problems as per SLA, and escalate per the escalation matrix.
• Handle escalations, severity incidents, and critical projects.
• Work on SIPs and assignments.
• Adhere to process and procedures.
• Manage and maintain availability and uptime of infrastructure.
• Prepare handover checklists, POA, shift reports, KEDB, SOPs, and documentation.
• Collaborate with team members and other teams to provide resolutions.
• Ensure all tasks and work done are captured and updated in ticketing systems.
• Ensure resolutions meet SLA, and provide L3-level support and RCA for critical incidents.

Primary Skills (Must Have)

• Strong hands-on experience 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 in Data Centre environments.
• Working knowledge of VXLAN overlay networking and EVPN as its control plane.
• 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 of load balancers and proxy technologies.
• Familiarity with network documentation, change management, and ITIL incident/problem management.
• Experience with DC 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).
• Exposure to threat intelligence and common attack vectors.
• Ability to correlate network and firewall logs with SOC alerts.
• 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).
• Certifications such as CCNA/CCNP, 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, maintaining system reliability, handling high-impact incidents, and shaping operational excellence.

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.