Shiyam Sundar S

Secured API-driven architectures, implementing role-based access controls (RBAC), CRM and API authentication
workflows.
Conducted web penetration testing to identify vulnerabilities and strengthen platform security.
Collaborated with cross-functional teams to enhance feature integration, UX/UI, and overall product performance.

Led full product lifecycle from requirements to sprint planning, ensuring on-time delivery.
Collaborated with cross-functional teams for seamless feature integration, driving product enhancements and optimizing
UX/UI with Figma. Championed Agile practices, improving product positioning and user engagement through market research.

Developed custom detection rules in Zoho SIEM using MITRE ATT&CK, improving threat detection and reducing false positives. Led investigations on IOCs and anomalies, enhanced email security (SPF/DKIM/DMARC), and conducted phishing simulations. Built AI-driven SOAR and SIEM tools, cutting response time by 30%.

As a Security Trainee in the Red Team, I conducted penetration testing to assess the security posture of applications and systems. My insights contributed to roadmap decisions, enhancing overall security measures.

Designed and implemented a locking mechanism to safeguard smart contracts from reentrancy attacks, improving blockchain security with minimal performance impact. Validated the solution on Ethereum using innovative function-locking and hashing techniques.

Developed a deep learning solution leveraging convolutional neural networks (CNN) to predict and classify knee osteoarthritis severity using X-ray and MRI datasets. Implemented automated detection based on the Kellgren-Lawrence grading system, improving accuracy and reliability in medical imaging analysis.