Kaustav Ghosh
Senior SIEM Engineer | Splunk Architect | Splunk Enterprise Security | 7 Years Exp. in Cybersecurity & Security Analytics
- Role
- Senior Associate at Cognizant
- Location
- Kolkata, WB, IN
- LinkedIn followers
- 500 followers
About Kaustav Ghosh
I am a Senior SIEM & Security Analytics professional with nearly 7 years of experience architecting enterprise security monitoring solutions across banking and insurance environments. My core expertise lies in designing end-to-end Splunk architectures—including multi-cluster deployments (Indexer, SHC, Deployer)—that are built for scale and high availability.Currently, I specialize in bridging the gap between infrastructure health and security posture. I have a strong track record in log pipeline optimization, where I have utilized tools like Cribl and Splunk to improve ingestion quality, successfully reducing weekly log volumes by 500 GB. Beyond architecture, I focus on threat resilience by developing Splunk Enterprise Security use cases mapped to the MITRE ATT & CK framework and Cyber Kill Chain.My work is defined by a drive for efficiency and automation. I have reduced alert fatigue by 25% across operational teams through signal-to-noise optimization and implemented OpenTelemetry (OTel) instrumentation to strengthen observability across distributed microservices.Core Competencies:SIEM Architecture: Splunk Enterprise, Splunk Cloud, High-Availability Clusters.Observability: Splunk Observability Cloud, OpenTelemetry (OTel), Cribl Stream.Security Engineering: MITRE ATT & CK, Threat Hunting, Incident Response.Automation: Python, REST APIs, Shell Scripting, Azure DevOps.
Experience
Senior Associate
Apr 2025 — Present · Kolkata, IN
Education
Narula Institute Of Technology
Bachelor of Technology (B.Tech.), Computer Science
2015 — 2019
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