- Contributed to the open-source project OpenRewrite by incorporating multi-file data flow analysis to help identify and remediate security vulnerabilities across thousands of open-source GitHub repositories- Improved Java Abstract Syntax Tree (AST) analysis by adding new types and transitioning to more efficient design patterns, enhancing the project's ability to detect potential security issues- Developed a scanning recipe with abstract AST visitors to search for XML External Entity (XXE) vulnerabilities across open-source projects; utilized Moderne SaaS to identify hundreds of repositories with latent XXE vulnerabilities

- Created a customer care self-service chatbot using an IBM Watson-powered virtual assistant to address customer queries, contributing to improved security and efficiency in handling customer interactions- Integrated STIGs and NIST SP 800-53 controls to streamline security implementations including session limitations, access enforcement, least privilege, and event logging for malicious activity- Conducted pen testing on chatbot via injection attacks, XSS, DDoS attacks, character exploitation, and social engineering; successfully hardened chatbot with input sanitization and improved authentication methods