Worked on the TACC/Core-Portal repository to deliver stability and security enhancements using Python and backend development skills. Addressed a deprecation issue by updating the Elasticsearch analyzer configuration, replacing the deprecated tokenizer with the 'ngram' tokenizer to ensure compatibility with Elasticsearch 8.17+ and maintain reliable portal setup. Additionally, implemented cookie security hardening by enforcing HTTPS-only transmission for session and CSRF cookies and restricting client-side access to CSRF cookies, reducing the risk of CSRF and session hijacking. These changes aligned with security scan remediation requirements and improved the maintainability, reliability, and future compatibility of the portal’s backend infrastructure.