Senior Java Developer at Digitally Inspired / Intellias

Participated in IDM service development for Criteo; implemented a self-service resource access module using Vaadin for the frontend and Spring with Hibernate for the backend; built Jira and IDM data synchronization plugins; added automatic email notifications for requests; implemented user deactivation workflow with automated resource transfer; created an SSH key management service integrated with GitLab; optimized permission management using multithreading; performed significant refactoring for maintainability and scalability. Also contributed to VistaJet and P&H Plumbing projects, including OAuth/Auth0 integration and DynamoDB usage for application access information.

Senior Java Developer at Luxoft

Led data modeling for Harman Online Map Search (crossroads, POI, multilingual support, and full-text search); designed migration of legacy data to a new database model and evaluated multiple FTS libraries. Implemented data search processing and refinement. For Harman Automotive System – Speech, integrated Cerence tools and migrated from Hibernate to Spring JdbcTemplate to improve performance, refactoring code and SQL to reduce execution time from 17–20 hours to 2–3 hours. Also contributed to the POI module, achieving substantial performance improvements (SQLite processing).

Senior Developer at NetCracker

DHL – Data Migration: developed sophisticated data transformation algorithms for a ~10 TB migration, using Oracle DB, SQL, PL/SQL, and Java; solved performance and timing challenges via analysis of legacy data and migration algorithms; implemented custom parallel execution within Oracle DB standard edition and contributed to business data model changes and knowledge sharing. Optimum Lightpath – Data Migration: implemented data migration between models; improved performance. TELUS – Post-Production Support: bug fixing, SQL tuning, and performance enhancements.