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varun sharmaVS
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varun sharma

@varunsharma20

Network Security Team Leader at Neurealm, resolving 350+ monthly P1–P3 incidents for global customers.

India
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At Neurealm, I architect and operate Arista NGFW TAC for global customers, resolving 350+ P1–P3 incidents monthly. I also configure and optimize Arista Next-Generation Firewalls and was recognized by the CEO for client support and operational excellence, with 100% CSAT in 2025.

At British Telecom, I managed global network and security operations and automated device configuration using REST APIs, NETCONF, NETMIKO, and Ansible, reducing errors by 90% and configuration time by 75%. Earlier, at Rackspace Technologies and Cognizant Technology Solutions, I supported network security operations, migrations, and WAN failover testing across 64 global enterprise sites.

Experience

Work history, roles, and key accomplishments

NE
Current

Network Security Team Leader

Neurealm

Feb 2024 - Present (2 years 9 months)

Architect and operate Arista NGFW TAC for global customers, resolving 350+ P1-P3 incidents monthly. Recognized by CEO for delivering strategic client support and operational excellence with 100% CSAT in 2025.

British Telecom logoBT

Network Security Professional

Nov 2022 - Feb 2024 (1 year 3 months)

Managed global network and security operations, resolving P1-P3 incidents and upgrading firewalls and load balancers. Served as SME for F5 LTM and Citrix NetScaler, training 17 new team members during transition from Rackspace to BT.

Rackspace Technologies logoRT

Network Security Engineer

May 2021 - Oct 2022 (1 year 5 months)

Managed global network and security operations, resolving P1-P3 incidents and upgrading firewalls and load balancers. Orchestrated enterprise-wide network migrations with zero downtime, leveraging BGP failover and WAN testing.

Palo Alto
Firepower
ASA
F5 LTMCitrix NetScalerREST APIs
RESTCONF
NETCONF
Netmiko
AnsiblePythonBGPWAN
Cognizant Technology Solutions logoCS

L2 Network & Security

Oct 2018 - May 2021 (2 years 7 months)

Provided L2 and L3 support for firewalls, routers, switches, and load balancers, maintaining enterprise network availability. Mitigated critical outage risks across 64 global enterprise sites for Celgene Corporation by orchestrating WAN failover testing leveraging BGP.

Education

Degrees, certifications, and relevant coursework

Guru Nanak Dev University logoGU

Guru Nanak Dev University

Master of Computer Applications, Computer Applications

Grade: 8.82 CGPA

Master of Computer Applications degree from Guru Nanak Dev University, completed in 2016 with a CGPA of 8.82.

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