Job Summary

We are looking for experienced Network Security Engineers (L2 & L3) to join our team supporting enterprise network and security infrastructure. The ideal candidate should have strong hands-on experience in Cisco networking, Palo Alto firewalls (mandatory), Fortinet/FortiGate security solutions, and F5 Load Balancers. The role involves implementation, administration, troubleshooting, and optimization of network security solutions in a high-availability environment.

Key Responsibilities

- Configure, manage, and troubleshoot Cisco network devices (Routers & Switches).
- Administer and support Palo Alto Firewalls (Mandatory).
- Configure and maintain Fortinet/FortiGate Firewalls and VPN solutions.
- Manage and troubleshoot F5 Load Balancers (LTM/GTM).
- Monitor network and security infrastructure to ensure high availability and performance.
- Implement firewall policies, NAT, IPS, VPN, and security best practices.
- Analyze network security incidents and perform root cause analysis.
- Coordinate with application, infrastructure, and security teams during deployments and issue resolution.
- Prepare technical documentation, SOPs, and change management activities.
- Participate in planned maintenance activities and production support.

L2 Responsibilities

- Provide operational support and incident resolution.
- Perform firewall rule implementation and policy modifications.
- Handle configuration changes, upgrades,



and routine maintenance.
- Escalate complex issues to the L3 team when required.

L3 Responsibilities

- Design and implement network security solutions.
- Lead critical incident management and major problem resolution.
- Perform advanced troubleshooting and root cause analysis.
- Plan infrastructure upgrades, migrations, and security improvements.
- Mentor junior engineers and provide technical guidance.

Required Skills

- Strong experience with Cisco Networking.
- Mandatory: Hands-on experience with Palo Alto Firewalls.
- Experience with Fortinet/FortiGate Firewalls.
- Hands-on expertise in F5 Load Balancer (LTM/GTM).
- Robust understanding of TCP/IP, Routing, Switching, VLANs, VPN, NAT, ACLs, IPS, and High Availability.
- Experience in network monitoring and troubleshooting tools.
- Good knowledge of enterprise network security best practices.
- Excellent analytical and problem-solving skills.

Preferred Skills

- Experience with security monitoring and SIEM tools.
- Knowledge of ITIL processes and change management.
- Relevant certifications such as CCNP, PCNSE, NSE, or F5 Certified are preferred.

If the roles and responsibility align with you share us your update resume to mousami.ghosh@3i-infotech or WhatsApp (phone hidden)

Interview round:

1st round- virtual

2nd round - Face-to-face interview (mandatory)

📌 andNetwork Security engineer (Palo Alto Engineer) - 3i (Maharashtra)
🏢 3i Infotech
📍 Maharashtra