manas sarkar

Senior Network Security Engineer

Orchestrate resolution of critical P1/P2 incidents, maintaining 99.9% network uptime for global infrastructure. Architect and implement security upgrades and lead executive briefings with RCA and risk mitigation plans.

Network SecurityIncident ManagementRoot Cause AnalysisPalo AltoCheckpointCisco ASAFortiGateIPS IDSF5 BIG IPLoad BalancingInfo BloxBluecatCisco SwitchingSplunkCrowdStrike Falcon Cloud SecurityArbor DDoSCASpectrumCA NetQoSKnowBe4ITIL

Senior Network Security Engineer

Engineered complex migrations of F5 Load Balancers and Cisco switching environments to enhance traffic management and scalability. Managed end-to-end security device upgrades ensuring zero-downtime transitions for mission-critical services.

F5 BIG IPLoad BalancingCisco SwitchingNetwork SecuritySecurity Device UpgradesClient Collaboration

Network Security Administrator

Cognizant Technology Solutions

Directed Security and DDI teams, optimizing IP address management and reducing DNS resolution latency. Navigated large-scale infrastructure migrations and delivered comprehensive RCAs for critical network outages.

Network SecurityDDIDNSDHCPIPAMInfrastructure MigrationRoot Cause AnalysisIncident Management

Network Security Administrator

Tata Consultancy Services

Pioneered advanced threat detection initiatives, implementing systems that proactively identified and mitigated network vulnerabilities. Standardized security policies across F5 and DDI devices to maintain a uniform security posture.

Threat DetectionNetwork SecurityDDISecurity PolicyVulnerability Mitigation

Network Engineer (Data Center Operations)

Implemented full-stack network setups for Data Centers and remote sites, ensuring seamless connectivity. Monitored health metrics using CA Spectrum and CA NetQos, and provided L2 support for complex network configurations.

Data Center OperationsNetwork SetupCASpectrumCA NetQoSTroubleshootingL2 Support