Ajith Kumar S

About Ajith Kumar S

At EY, as a Senior Manager - AI Security Architect, my focus is on enhancing threat…

Experience

1. Cyber Security Leader - Threat Management

   IBM

   Apr 2025 — Present · Chennai, IN

   As a Sr Managing Consultant at IBM, I lead end-to-end Security Operations for a major utility sector client. I am responsible for overseeing a team of over 20 cybersecurity professionals across key functions including Threat Management, Security Intelligence and hunting, Vulnerability Management, and Endpoint Security.My core responsibilities include: • Leading the development and optimization of security operations aligned with MITRE ATT & CK framework and industry best practices • Integrating and managing security technologies such as QRadar, MS Sentinel, Microsoft Defender, and Tenable to deliver enhanced threat visibility and response • Designing and implementing custom detection use cases, threat hunting procedures, and IOC-based rules across SIEM and EDR platforms • Delivering regular threat intelligence briefings and SOC performance reports to senior client leadership • Driving GenAI adoption and automation initiatives to improve incident response time and reduce operational workload • Mentoring team members and fostering a culture of continuous improvement and proactive defenseMy goal is to create a high-performance Threat management team that adds measurable value to the client through intelligence-driven, scalable, and adaptive security operations.

Education

• SRM University

  B.Tech

  2013 — 2017