Thanshu Kumar Ray Choudhury
Senior Information Security Engineer
Kolkata
Summary
Electrical Engineering graduate with a major in Electrical Machine and good 5 plus years experience
as an Information Security Engineer in highly analytical and offensive-defense focused Senior Cybersecurity Analyst with extensive experience safeguarding enterprise architecture through proactive threat mitigation and robust defense strategies. A proven track record of bridging the gap between offensive security (Red Teaming / VAPT) and defensive operations (SOC / Endpoint Compliance) to build resilient, zero-trust environments.
Expert in simulating advanced adversary tactics, executing comprehensive Vulnerability Assessment and Penetration Testing (VAPT), and orchestrating end-to-end Vulnerability Management lifecycles to remediate risks before they are exploited. On the defensive front, adept at monitoring high-volume SOC environments, hunting threats, and ensuring stringent Endpoint Compliance across diverse corporate fleets.
Passionate about continuous monitoring, incident response acceleration, and transforming complex technical vulnerabilities into actionable, executive-level risk-reduction strategies.
Overview
3
3
Languages
7
7
Certifications
5
5
years of professional experience
Work History
Senior Information Security Engineer
Nihilent Limited
02.2021 - Current
- Implemented Cybsecurity trainings to safeguard sensitive data and information systems to clients.
- Conducted vulnerability assessments and penetration testing to identify potential security risks.
- Monitor & Analyze security alerts & incidents , Led incident response efforts, coordinating with cross-functional teams to mitigate breaches effectively.
- Configure, maintain, and optimize SIEM solutions (Manage Engine). Develop correlation rules, dashboards, and reports to enhance security monitoring. Analyze logs from diverse sources including firewalls, servers, endpoints, and cloud platforms. Ensure log ingestion, normalization, and retention compliance.
- Administer and maintain endpoint security solutions in CrowdStrike. Monitor endpoint alerts and respond to malware, ransomware, and advanced endpoint threats. Implement endpoint hardening, policy tuning, and threat containment measures.
- Manage end-to-end vulnerability lifecycle: discovery, prioritization, remediation, and validation. Conduct regular vulnerability scans and risk assessments across infrastructure. Prioritize vulnerabilities based on CVSS scores, exploitability, and business impact. Track and report remediation status and SLA compliance to stakeholders.
- Prepare VAPT reports. Document incident response, RCA. Generate dashboard highlighting key security metrics and risks
Education
B.Tech - Electrical Engineering
Dr. Sudhir Chandra Sur Degree Engineering College
Kolkata07-2020
Indian School Certificate (Class - XII) - Science
Pramila Memorial Institute
Kolkata05-2016
Indian Certificate of Secondary Education - Science
WWA Cossipore English School
Kolkata05-2014
Skills
VAPT
OWASP
Security Operations
Vulnerability Management
SIEM
Engineering
Ethical Hacking
Documentation
Technical Analysis
Certification
Qualys Patch Management
References
- Reshma Kagdi, IT Manager, Reshma.Kagdi@nihilent.com, Nihilent Limited.
- Soumik Mondal , Manager - IT Operations, Soumik.Mondal@nihilent.com,Nihilent Limited.
Interests
Football, Fitness, Reading Mythological Books, Listening to Music & Ethical Hacking
Accomplishments
Have achieved star performer of the quarter award in 2023 . Also got appreciation from client in town hall for lowering of Vulnerability counts.
Software
Qualys
CrowdStrike
Burpsuite
Nessus
Kali Linux
Manage Engine (SIEM)
Additional Information
1. Nihilent Infosec Ops and Governance.
2. Sanlam Digital Academy Batch 2022.
3. Multi Choice Africa Dev Team Digital.
4. MFS Africa Social Engineering Workshop.
5. MFS Africa ISO27001.
6. ABF Consulting and Technical services.
7. ABF BTS EPT Team.
Timeline
Cybersecurity solutions and Microsoft defender by Microsoft
02-2025
Intro to AWS Penetration Testing by PACKT
01-2025
Cloud Fundamentals by Palo Alto Network
11-2024
Security Operations Centre by Cisco
09-2024
Penetration testing, Incident response & forensics by IBM
09-2024
IBM Cybersecurity Fundamentals
05-2024
Qualys Patch Management
07-2023
Senior Information Security Engineer
Nihilent Limited
02.2021 - Current
Indian Certificate of Secondary Education - Science
WWA Cossipore English School
Indian School Certificate (Class - XII) - Science
Pramila Memorial Institute
B.Tech - Electrical Engineering
Dr. Sudhir Chandra Sur Degree Engineering College