L3 Network Security Engineer (Managed Firewall | Network Infrastructure)
- Compensation
- Not disclosed
- Location
- Bangalore, India
- Work setup
- Not specified
- Seniority
- Not specified
- Employment
- Not specified
- Experience
- 4+ years
- Category
- Security
- Posted
Skills
Must have
- 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 and Panorama.
- • Solid experience with Cisco Catalyst and Nexus switching in enterprise environments.
- • Working experience with Cisco WLC and enterprise access point management.
- 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 planning basics, 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 and document what happened after ward.
- • Self-directed. You manage your workload, flag blockers early, and do not wait to be chased.
- • Collaborative. You work well with security analysts, project managers, and client technical teams
Full description
About the Role:
Saint Fox is looking for an experienced L3 Network Security
Engineer to own the design, deployment, and day-to-day management of
enterprise network security infrastructure for our clients. This is a senior
hands-on role. You will work across Cisco and Palo Alto environments, drive
incident escalations to closure, mentor junior engineers, and contribute to
architecture decisions.
You will sit within the Managed Firewall and Secure Access practice, working
closely with Security Analysts and Principal Engineers to keep client
environments 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 including
policy management, App-ID, User-ID, and threat prevention profiles.
- Manage Palo Alto Panorama for centralised policy and device management
across multiple firewalls.
- Perform rule-base reviews, clean-up, and optimisation on a scheduled basis
to reduce attack surface and policy drift.
- Respond to and resolve L3 firewall incidents and escalations within agreed
SLA windows.
Network Infrastructure
- Configure and manage Cisco Catalyst and Nexus switching platforms
including VLANs, STP, VPC, and QoS.
- Administer Cisco Wireless infrastructure including WLC (Wireless LAN
Controllers) and Cisco Access Points across campus and branch
environments.
- Troubleshoot complex Layer 2 and Layer 3 network issues from physical
through to application layer.
- Maintain and enforce network segmentation policies aligned to Zero Trust
principles.
Routing and Connectivity
- Configure and manage dynamic routing protocols including OSPF, BGP, and
EIGRP.
- Manage site-to-site and remote-access VPN including Cisco AnyConnect and
Palo Alto Global Protect.
- Support SD-WAN and SASE integration efforts where applicable
Operations and Governance