- developed a streamlined process that reduced average data migration time, improving efficiency- collaborated with cross-functional teams to drive major enhancements throughout the project lifecycle- spearheaded the design and implementation of key features for Oracle Cloud Infrastructure's datamigration service, enhancing system scalability which enabled handling 200% more concurrent migrationswithout performance degradation- enhanced service capabilities beyond the MVP, collaborating on nearly every significant improvementTechnologies: Java, Oracle, Dropwizard

- designed and deployed microservices architecture that improved application scalability by 40%, allowingfor seamless integration of distributed data systems while enhancing system performance withoutcompromising security protocols- operated under NDA; specifics cannot be disclosed

- updated payment processing for 15+ currencies across 3 payment systems post-Brexit- implemented a robust integration test mechanism using the builder pattern, decreasing average testcreation time by 40% while enhancing overall comprehension of complex payment processing systems- spearheaded integration testing for a multi-currency payment system; implemented Cucumber tostreamline the process, enabling faster test development and reducing overall debugging timeTechnologies: Java, Ruby, MySQL, Dropwizard, Apache Thrift

Created and sustained interactive web features for over 10 diverse clients, leading to enhanced userengagement metricsTechnologies: Java, MySQL, JavaScript, PHP, Firebird

The largest State-owned bank in Eastern Europe, serving 120M customers and a 10K-person IT department- engineered a robust synchronization mechanism between production and training data stores for machinelearning projects, ensuring seamless integration that boosted model accuracy while minimizing downtimeduring transitions- consulted on 10+ projects to enhance design and optimize performance- established an internal training course on distributed data processing, RESTful APIs, and SOAP protocols- trained 400+ programmers. Among the topics of the course were such as dispatched data andcalculations, message brokers, etc.Technologies: Java, JavaScript, Oracle, Apache Ignite, Apache Kafka, Tomcat, Spring Framework