L3 Network Security Engineer (Managed Firewall | Network Infrastructure)

Saint Fox Consultancy (P) Ltd.; Bengaluru; On-site; INR 4,000,000 - 7,000,000; Full time

Benefits offered by this job

Onsite at client location

Professional growth

Training opportunities

Career progression

Job summary

Saint Fox Consultancy Private Limited seeks an experienced L3 Network Security Engineer to own the design, deployment, and day-to-day management of enterprise security infrastructure. You will work across Cisco and Palo Alto environments, mentor junior engineers, and drive architecture decisions.

This senior hands-on role sits in the Managed Firewall and Secure Access practice, collaborating with Security Analysts and Principal Engineers to keep client environments stable and audit-ready.

Qualifications

• 8 to 15 years of hands-on experience in network security engineering.
• At least 4 years working at L3 or equivalent senior engineer level.
• Production experience with Cisco ASA/FTD firewalls and Palo Alto NGFW.
• Experience with Cisco Catalyst/Nexus switching and WLC/AP management.

Responsibilities

• Design, deploy, and manage Cisco ASA/FTD firewalls in enterprise environments.
• Operate Palo Alto NGFW and Panorama for centralised policy management.
• Configure Cisco Catalyst/Nexus switching, VLANs, QoS, and routing.
• Manage site-to-site and remote VPNs including AnyConnect and GlobalProtect.
• Own change management, documentation, and incident response for security.

Skills

Network security

L3 engineer

Cisco ASA/FTD

Palo Alto NGFW

Panorama management

Cisco Catalyst/Nexus

WLC management

VPN technologies

Wireshark

Zero Trust

Tools

Wireshark

Panorama

GlobalProtect

AnyConnect

Job description

Saint Fox Consultancy Private Limited | Full time

L3 Network Security Engineer (Managed Firewall | Network Infrastructure)

Saint Fox is looking for an experienced L3 Network SecurityEngineer to own the design, deployment, and day-to-day management ofenterprise network security infrastructure for our clients. This is a seniorhands-on role. You will work across Cisco and Palo Alto environments, driveincident escalations to closure, mentor junior engineers, and contribute toarchitecture decisions.You will sit within the Managed Firewall and Secure Access practice, workingclosely with Security Analysts and Principal Engineers to keep clientenvironments stable, documented, and audit-ready.

Key Responsibilities

Firewall Operations

• Design, deploy, and manage Cisco ASA and Firepower Threat Defense (FTD)firewalls in enterprise and multi-site environments.
• Operate and tune Palo Alto Networks next-generation firewalls includingpolicy management, App-ID, User-ID, and threat prevention profiles.
• Manage Palo Alto Panorama for centralised policy and device managementacross multiple firewalls.
• Perform rule-base reviews, clean-up, and optimisation on a scheduled basisto reduce attack surface and policy drift.
• Respond to and resolve L3 firewall incidents and escalations within agreedSLA windows.

Network Infrastructure

• Configure and manage Cisco Catalyst and Nexus switching platformsincluding VLANs, STP, VPC, and QoS.
• Administer Cisco Wireless infrastructure including WLC (Wireless LANControllers) and Cisco Access Points across campus and branchenvironments.
• Troubleshoot complex Layer 2 and Layer 3 network issues from physicalthrough to application layer.
• Maintain and enforce network segmentation policies aligned to Zero Trustprinciples.Routing and Connectivity
• Configure and manage dynamic routing protocols including OSPF, BGP, andEIGRP.
• Manage site-to-site and remote-access VPN including Cisco AnyConnect andPalo Alto Global Protect.
• Support SD-WAN and SASE integration efforts where applicable

Operations and Governance

• Own change management for network security changes including planning,testing, and rollback procedures.
• Maintain accurate and current network diagrams, run books, andconfiguration documentation.
• Participate in vulnerability and patch management cycles for networkdevices.
• Support internal and external audits by providing evidence and configurationreviews.
• Provide mentoring and technical guidance to L1 and L2 engineers

Requirements

Experience

• 8 to 15 years of hands-on experience in network security engineering.
• At least 4 years working at L3 or equivalent senior engineer level.
• Demonstrated production experience with Cisco ASA and/or FTD firewalls.
• Demonstrated production experience with Palo Alto Networks NGFW andPanorama.
• Solid experience with Cisco Catalyst and Nexus switching in enterpriseenvironments.
• Working experience with Cisco WLC and enterprise access pointmanagement.

Technical Skills

• Cisco Firewall: ACLs, NAT, VPN, HA, and Firepower management centre.
• Cisco Switching: VLAN, STP, RSTP, VPC/vPC, port-channel, QoS, and SPAN.
• Cisco Wireless: WLC management, AP provisioning, SSID design, RF planningbasics, and client troubleshooting.
• Palo Alto: Security policies, NAT, decryption, URL filtering, Wildfire, Panorama,and HA configuration.
• Routing: OSPF, BGP, EIGRP, PBR, and route redistribution.
• VPN: IPsec, SSL-VPN, GlobalProtect, and AnyConnect.
• Packet analysis using Wireshark or equivalent.
• Working knowledge of NAC, 802.1X, and RADIUS.

Preferred Certifications

• Required: CCNP Security or CCNP Enterprise (current and valid).
• Preferred: Palo Alto PCNSE (or working towards it).
• Preferred: Cisco CCIE Security or equivalent advanced certification.

Soft Skills

• Clear communicator. You can explain a complex network problem to a non-technical stakeholder without burying them in acronyms.
• Methodical under pressure. You follow process during incidents anddocument what happened after ward.
• Self-directed. You manage your workload, flag blockers early, and do not waitto be chased.
• Collaborative. You work well with security analysts, project managers, andclient technical teams

Why Join St. Fox

• Opportunity to work onsite at a leading customer location, enabling directengagement with innovative projects.
• A collaborative and dynamic working environment focused on continuouslearning and professional growth.
• Exposure to advanced technologies and ongoing training opportunities.
• Clear career progression pathways supported by experienced leadership.

What We Offer

• An opportunity to work in a rapidly growing company with potential forpersonal and professional growth.
• Opportunity to work in a rapidly growing company with potential forpersonal and professional growth.
• A collaborative and inclusive culture that values each employee’scontribution towards our goals.
• Competitive compensation package including attractive bonus structuresand benefits

St. Fox is an Equal Opportunity Employer. We celebrate diversity and arecommitted to creating an inclusive environment for all employees.