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Bittu Saha

Senior Specialist @HCLTech | Network Security Engineer | Firewall (Palo Alto, Cisco ASA, FTD, Fortigate) | VPN (IPSEC, Global Protect) | Routing & Switching | Azure Cloud Certified(Az-500, Az-900)

Kolkata

4+ years of work experience

HCLTech
Jul 20263 mosPresent

Pune

Accenture
May 20263 mosJul 2026

Hybrid

Accenture
Mar 20251 yr 3 mosMay 2026

On-site

Palo Alto NGFW & Zone Management: Configuration and management of Palo Alto firewalls, including Security Zone creation and assignment, security rule base optimization, NAT, and App-ID/User-ID based access control. Advanced Troubleshooting: Diagnose and resolve complex security issues related to security profiles (URL Filtering, Threat Prevention), GlobalProtect VPN connectivity, and Policy-Based Forwarding (PBF) to ensure uninterrupted secure access. Security Infrastructure: Orchestrate network segmentation by creating and managing L3 interfaces and Security Zones directly on firewalls to enforce strict inter-zone communication policies. Centralized Management & Monitoring: Utilize Palo Alto Panorama for unified policy deployment and analyze firewall logs to implement corrective measures and threat mitigation strategies. Routing, Switching & Performance: Consolidate core network operations including Cisco switch/router configuration (VLAN creation, trunk pruning, and ACL implementation) and execute bandwidth upgrade/downgrade activities to maintain optimal circuit performance. Integrated Network Services: Administer Infoblox IPAM for DHCP/IP allocation and manage wireless infrastructure via Aruba WLC.
Infosys
Oct 20246 mosMar 2025

Bangalore

Expertise in Firewall configuration, creating and deployment of rules and managing traffic across Cisco ASA, CISCO FTD, FortiGate, and Juniper SRX firewalls. Efficiently troubleshoot Firewall node down issues by performing health check and diagnosing connectivity problems. Conduct audits and compliance check of network security devices prior to commissioning and submit report to the respective team for review and action. Execute the retirement of devices from the network environment by established procedures to safely decommission from network. Working on Standard and emergency change. Detailed documentation of troubleshooting and configuration steps for incident resolution, taking responsibility for meeting SLA.
Infosys
Feb 20231 yr 9 mosOct 2024

Bhubaneswar, Odisha, India

Infosys
Mar 20221 yrFeb 2023

Mysore, Karnataka, India

Bittu’s AI Stack

claude
claude
deepseek
deepseek
gemini
gemini
grok
grok
openai
openai

Education

MCKV institute of engineering

Bachelor of Technology - BTech, Electronic and Communications Engineering Technology

MCKV institute of engineering

20203 yrs2023
Technique Polytechnic Institute

Diploma in Electronics and telecommunication engineering, Electrical, Electronics and Communications Engineering

Technique Polytechnic Institute

20173 yrs2020

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Headline

Senior Specialist @HCLTech | Network Security Engineer | Firewall (Palo Alto, Cisco ASA, FTD, Fortigate) | VPN (IPSEC, Global Protect) | Routing & Switching | Azure Cloud Certified(Az-500, Az-900)

Location

Kolkata

AI stack

claude

deepseek

gemini

grok

openai

Work experience

Senior Specialist at HCLTech, Jul 2026 - Present · 3 mos, Pune

App/Cloud Support analyst at Accenture, May 2026 - Jul 2026 · 3 mos, Hybrid

Network & Svcs Operations Associate at Accenture, Mar 2025 - May 2026 · 1 yr 3 mos, On-site, Palo Alto NGFW & Zone Management: Configuration and management of Palo Alto firewalls, including Security Zone creation and assignment, security rule base optimization, NAT, and App-ID/User-ID based access control. Advanced Troubleshooting: Diagnose and resolve complex security issues related to security profiles (URL Filtering, Threat Prevention), GlobalProtect VPN connectivity, and Policy-Based Forwarding (PBF) to ensure uninterrupted secure access. Security Infrastructure: Orchestrate network segmentation by creating and managing L3 interfaces and Security Zones directly on firewalls to enforce strict inter-zone communication policies. Centralized Management & Monitoring: Utilize Palo Alto Panorama for unified policy deployment and analyze firewall logs to implement corrective measures and threat mitigation strategies. Routing, Switching & Performance: Consolidate core network operations including Cisco switch/router configuration (VLAN creation, trunk pruning, and ACL implementation) and execute bandwidth upgrade/downgrade activities to maintain optimal circuit performance. Integrated Network Services: Administer Infoblox IPAM for DHCP/IP allocation and manage wireless infrastructure via Aruba WLC.

Senior System Associate at Infosys, Oct 2024 - Mar 2025 · 6 mos, Bangalore, Expertise in Firewall configuration, creating and deployment of rules and managing traffic across Cisco ASA, CISCO FTD, FortiGate, and Juniper SRX firewalls. Efficiently troubleshoot Firewall node down issues by performing health check and diagnosing connectivity problems. Conduct audits and compliance check of network security devices prior to commissioning and submit report to the respective team for review and action. Execute the retirement of devices from the network environment by established procedures to safely decommission from network. Working on Standard and emergency change. Detailed documentation of troubleshooting and configuration steps for incident resolution, taking responsibility for meeting SLA.

System Associate at Infosys, Feb 2023 - Oct 2024 · 1 yr 9 mos, Bhubaneswar, Odisha, India

Operations Executive at Infosys, Mar 2022 - Feb 2023 · 1 yr, Mysore, Karnataka, India

Education

Bachelor of Technology - BTech, Electronic and Communications Engineering Technology, MCKV institute of engineering

Diploma in Electronics and telecommunication engineering, Electrical, Electronics and Communications Engineering, Technique Polytechnic Institute