- Spearheaded the transition from legacy services to a microservices-based architecture within the credit card processing application, resulting in a streamlined and efficient product processing flow.- Developed critical logic components within a Kotlin microservice application, enabling seamless primary processing and eliminating reliance on legacy systems, achieving a 40% reduction in system response time.- Oversaw the migration of credit card services to a new Kubernetes cluster with balancer, optimizing resource allocation and enhancing system performance.- Orchestrated the upgrade of Java services to the latest stable version and their migration to GitLab, implementing continuous integration processes and preserving backward compatibility with existing systems.- Mentored middle-level Java/Kotlin developers, facilitating a smooth onboarding process and ensuring their successful integration into the team.

- Business feature specification: defined technical specifications for business features and elaborated on product process architecture.- Legacy system transition: managed the transition away from Siebel legacy system integration, ensuring a smooth migration to another CRM solution while maintaining data integrity and functionality.- ODM application development: successfully developed and released ODM (Operational Decision Management) applications, meeting business requirements.- Code refactoring: improved code quality by refactoring ODM applications, replacing self-written collections with optimized solutions.- Kotlin migration: led the migration effort to rewrite ODM applications entirely in Kotlin, enhancing performance and maintainability.- Kubernetes deployment: orchestrated the migration of ODM applications to Kubernetes for efficient scaling and management.- Mentoring: provided guidance and mentoring to new ODM developers, facilitating their onboarding and skill development.