ABHISHEK ROY
Noida
Summary
Senior Network and Security Engineer with 8.5+ years of enterprise networking experience, focused on F5 load balancing, firewall security, and DNS/DDI. Expertise includes F5 OS and F5 TMOS, Palo Alto firewalls, and Infoblox DDI. Manage P1/P2 incidents, maintain SLA compliance, and deliver support for global banking and life sciences environments.
Overview
9
9
years of professional experience
Work History
Senior Network Security Engineer
Kyndryl Solution
Noida
06.2025 - Current
- Administered Palo Alto firewalls, ensuring secure VPN setup, effective rule deployment, timely OS upgrades, and comprehensive security policy enforcement.
- Configured F5 TMOS LTM and GTM on i4600, i4800, i5400, i5800, and i7250 platforms to enhance traffic control, facilitate SSL offload, implement iRules, and optimize DNS load balancing.
- Managed F5 OS on rSeries r2600 and r2800, including tenant setup, resource assignment, and system upgrades for availability and scale.
- Performed root cause analysis on repeat incidents and applied permanent fixes to reduce recurring issues.
- Worked with vendors and TAC support to open cases and resolve complex technical issues in a timely manner.
- Documented operating procedures, troubleshooting steps, and configuration changes to streamline knowledge transfer and improve team efficiency.
Senior Network Security Engineer
Tata Consultancy Services (TCS)
01.2023 - 06.2025
- Administered Palo Alto firewalls with threat prevention, security policy management, and VPN setup.
- Configured and maintained F5 BIG-IP LTM and GTM for traffic distribution, SSL offload, and iRules setup.
- Provided L3 support for F5 load balancer issues across LTM and GTM platforms.
- Managed network operations ensuring 24x7 uptime and regulatory compliance across multi-geography environments.
- Managed Cisco WLC controllers for wireless networks, including SSID setup and RF troubleshooting.
- Set up alert rules and email notifications to identify and resolve network issues proactively.
- Led network infrastructure upgrade projects to improve speed and reliability.
- Collaborated with vendors and third-party providers to procure network services, resolve TAC cases, and maintain relationships for timely, cost-effective support.
Network Engineer (Data Center)
Ceche Technologies
Airtel Project
02.2020 - 12.2022
- Implemented Arista spine-leaf architecture and configured MLAG in Arista CloudVision Portal (CVP) to enhance network performance.
- Set up VLANs, VPCs, and static routing on Nexus switches across 9K, 6K, and 3K series to ensure robust network segmentation.
- Resolved P1 and SDN issues end to end, coordinating TAC support to minimize downtime and restore service.
- Supported data center design with device mounting, cabling standards, and power distribution.
Network Engineer (ISP)
Kutumbh Care Pvt. Ltd. (Bharti Airtel Project)
Airtel Project
10.2017 - 02.2020
- - Facilitated migration of B2B enterprise customers to MPLS networks with hub-and-spoke and mesh topologies, enhancing network reliability.
- - Supported router and switch configuration on Cisco 9K and ASR platforms using BGP, OSPF, and static routing.
- - Executed new installations and conducted quarterly preventive maintenance for corporate connections, maintaining service quality and performance.
- - Addressed network service complaints related to optical fiber and microwave media, ensuring prompt resolution of customer connectivity issues.
Operational Engineer (ISP)
Maksat Technology
07.2017 - 10.2017
- Resolved media faults across optical fiber, microwave sites, and RF devices, ensuring uninterrupted service.
- Supported 24x7 service for leased line corporate links, wireless networks, and p2p and p2mp connectivity.
- Installed and checked new network devices to meet SLA targets for issue resolution.
Education
Bachelor Of Engineering - Electronics and Communication Engineering
RGPV University
IES College Of Technology01-2016
Skills
- Palo Alto firewalls
- F5 BIG-IP load balancing
- Routing protocols
- Network architecture
- Wireless technologies: Cisco WLC 5500, 9800 controllers
- Infoblox DDI management
- Tools: Splunk, NetBrain, SevOne, SolarWinds, Wireshark, ServiceNow
Personal Information
- Date of Birth: 1992-02-05
- ID Type: Passport
- ID Number: U5016561
Languages
Languages: English, Hindi
PERSONAL DETAILS
- Base Location: Noida
Timeline
Senior Network Security Engineer
Kyndryl Solution
06.2025 - Current
Senior Network Security Engineer
Tata Consultancy Services (TCS)
01.2023 - 06.2025
Network Engineer (Data Center)
Ceche Technologies
02.2020 - 12.2022
Network Engineer (ISP)
Kutumbh Care Pvt. Ltd. (Bharti Airtel Project)
10.2017 - 02.2020
Operational Engineer (ISP)
Maksat Technology
07.2017 - 10.2017
Bachelor Of Engineering - Electronics and Communication Engineering
RGPV University