Sajid Mahimkar
Navi Mumbai
Summary
Seasoned Network Security Engineer with rich experience in designing, implementing and managing secure network infrastructures. Specialized skills include vulnerability assessment, intrusion detection systems, and firewall configurations. Demonstrated success in enhancing network security postures and minimizing potential threats across various organizations. Strong problem-solving abilities coupled with clear communication of complex technical information to non-technical stakeholders.
Overview
6
6
years of professional experience
7
7
years of post-secondary education
1
1
Certification
Work History
Associate Project
Cognizant Technology Solution
Navi Mumbai
06.2025 - Current
Associate Security Consultant
Gruve Technologies Pvt Ltd
Navi Mumbai
08.2023 - 06.2025
- Installation & administration of Palo Alto, Cisco FTD & Cisco ISE including first Time Setup.
- Worked on multiple Licenses of Palo Alto firewall including APP ID, content ID, User-id, URL Filtering, monitoring, High Availability, IPSEC, Global Protect.
- Worked on Cisco ASA to Palo Alto Migration projects with 6000+ NAT & 2000+ Firewall policies using Palo Alto Expedition tool.
- Creating Objects, Polices, Nating, Authentication, APP Override on firewall.
- Configured multiple IPSEC site to site VPN's and in depth troubleshooting related to VPN on Palo alto firewall as well as Cisco FTD firewall.
- Configured High Availability and performed troubleshooting of firewalls during HA.
- Performed Packet level capture on Firewall and troubleshooting done using packet captures also attend P1 & P2 calls.
- Monitoring of firewall and resolving APP ID, NAT, content ID, threat related issues.
- Working on Cisco ISE deployment projects from small to large scale enterprises.
- Involve in troubleshooting call with the help of OEM support.
- Coordinating with Customer for first level troubleshoot and resolve network and Security related Issues.
- Attending CAB Meetings, Raising Change record, taking proper approval, implementing the CR.
- Working on monthly Vulnerabilities and finding out the mitigations.
- Creating POA for upgradation as well as migration from one firewall to another. Leading the Activities.
Network Analyst
IKS Health Pvt Ltd
Mumbai
11.2021 - 08.2023
- Administration of Cisco FTD, Cisco ISE & Cisco Umbrella, Cisco Meraki, WLC, Cisco routers & Switches.
- Worked on Cisco ISE Planning & deployment to enhance security posture as per the business requirements.
- Configured multiple IPSEC site to site VPN's and in depth troubleshooting related to VPN.
- Configured Global Protect, Anyconnect & troubleshooting performed.
- Configured High Availability and performed troubleshooting of firewalls during HA.
- Monitoring of devices, MPLS links, Internet links through PRTG monitoring tool and performing other duties as directed.
- Following ITIL process, getting CAB approvals adhere to achieve SLA's, following change management process, Worked on critical, major, minor categories of tickets.
- Preparing & managing various documents such network diagram and Inventory of network devices, capacity planning report.
- Providing 24x7 onsite and remote support to support team in critical times for Maintaining continued connectivity.
- Coordinate and Participate in Activities, Operations, and Scheduled of Planned Maintenance.
- Coordinating with Customer for first level troubleshoot and resolve network and Security related Issues.
- In depth configuration of Cisco switches & routers, configuration of ISP Links, VLAN, VTP, STP and NAT, IP addressing, PBR, Route Map, Static, default & Dynamic routing protocols.
Network Associate Engineer
TATA Communications Ltd
PUNE
11.2020 - 11.2021
- Worked on PE routers migration projects such as Cisco to Alcatel, Cisco to Cisco, Alcatel to Alcatel.
- Worked on service provider's services like L3VPN, ILL, Multicast, EPIPE, IES, Serial.
- Responsible for carrying Domestic as well as international customers link migration activities on Bulk.
- In depth configuration of CE routers and switches based on customer's requirement.
Network Engineer
Argus Systems Pvt Ltd
PUNE
06.2019 - 07.2020
- Worked at NOC as supporting and troubleshooting all the network related issues of customers.
- Responsible for Maintaining & Monitoring performance of the network.
- Worked on Monitoring Tools like Nagios, PRTG, Ping Checker.
- Carrying out IOS upgradation and password Breaking of Cisco router & Switches.
- Managed and troubleshoot all escalated calls from filed Engineers.
Education
BE - Electronics and telecommunication
Mumbai University
Mumbai 08.2015 - 06.2019
Higher Secondary Certificate -
State Board of Maharashtra
Mumbai 08.2013 - 07.2015
Secondary School Certificate -
State Board of Maharashtra
Mumbai 06.2012 - 06.2013
Skills
- Configuration
- Troubleshooting
- Network Monitoring
- Palo Alto
- Cisco FTD
- Cisco ASA
- Panorama
- FMC
- Migration
- Firewall Policies
- Site to Site VPN
- Remote Access VPN
- ACL
- Network Switches
- Routers
- Firewalls
- IPS
- NAC
- Proxy
- WLCs
- Firewall Migration
- Firewall Implementation
- Cisco IOS Hardening
- ITIL Process
- Change Management
- Packet Level Capture
Certification
- Cisco Certified Network Associate (CCNA) Routing & Switching, CSCO13568685
- Cisco Certified Network Professional (CCNP) course in Core Networking & Security from I-medita, Pune, Maharashtra
- Palo Alto Certified Network Security Engineer (PCNSE), PAN00257148
- Palo Alto Certified Network Security Engineer course from I-medita, Pune, Maharashtra
- Fortinet Certified Fundamentals of Cybersecurity and Threat Landscape 2.0 Paced
- Cisco ISE 301 certification
- Completed Cisco Black belt Fire Jumper Presales 1,2 &3 training
- Completed Cisco ISE profiling, Posturing, dot1x & MAB authentication training from SecurView Systems Pvt Ltd, Pune, Maharashtra
Disclaimer
Thereby affirm that the information in this document is accurate and true to the best of my knowledge.
Languages
English
Beginner
A1
Hindi
Beginner
A1
Timeline
Associate Project
Cognizant Technology Solution
06.2025 - Current
Associate Security Consultant
Gruve Technologies Pvt Ltd
08.2023 - 06.2025
Network Analyst
IKS Health Pvt Ltd
11.2021 - 08.2023
Network Associate Engineer
TATA Communications Ltd
11.2020 - 11.2021
Network Engineer
Argus Systems Pvt Ltd
06.2019 - 07.2020
BE - Electronics and telecommunication
Mumbai University
08.2015 - 06.2019
Higher Secondary Certificate -
State Board of Maharashtra
08.2013 - 07.2015
Secondary School Certificate -
State Board of Maharashtra
06.2012 - 06.2013