Worked on the apache/tomcat repository to implement an architectural overhaul of the OpenSSLCertificateVerifier, decoupling certificate verification logic from the OpenSSLContext to improve maintainability and reduce strong JNI references. Migrated all certificate-related functionality to a dedicated verifier class, enforcing immutability of the verifier field to enhance thread-safety and support safer concurrent usage. This Java-based backend development focused on SSL/TLS security, laying the foundation for cleaner TLS verification and facilitating future enhancements. The changes addressed alignment with bug BZ 69866 by introducing a separate CertificateVerifier, resulting in a more modular and maintainable approach to certificate verification within Tomcat.