Hired on a project-based contract to support the Infrastructure Project Office with system modernization and automation initiatives.

• Led the technical evaluation of a new high-availability solution for PostgreSQL. Designed and delivered a successful proof-of-concept (PoC) using Patroni, Ansible, and Docker, which served as the basis for future architectural decisions.
• In parallel, optimized and automated internal documentation workflows on the Confluence platform.
• Authored a comprehensive technical report detailing the Patroni PoC, including performance benchmarks and integration guidelines.

Engineered and maintained a large-scale data synchronization platform connecting multiple distributed databases. Key responsibilities and achievements included:

• Designed and developed a robust data synchronization system using a message-based architecture and custom RESTful APIs to ensure reliable, real-time data exchange.
• Dramatically improved system performance and stability by conducting in-depth SQL query optimization and extensive code refactoring.
• Managed the end-to-end lifecycle of new features, from writing technical specifications and documentation to development, testing, and final deployment.

Focused on system integrations and automating data exchange workflows between the core platform and external services.

• Engineered key integrations with third-party financial (client-bank) and logistics (Nova Poshta) APIs, utilizing REST/SOAP principles and direct HTTP/FTP communication.
• Streamlined the software deployment process by scripting and automating version control workflows and configuration merges.
• Spearheaded the integration of a third-party Electronic Document Management (EDM) system and managed data exchange with legacy systems using technologies like COM.

• Engineered a role-based access control system using Record Level Security (RLS) principles to enforce data-level permissions.
• Developed custom business logic for management accounting modules and integrated the system with connected retail hardware.

• Customized client-side ERP configurations to align with specific business requirements.
• Developed custom reports, data processing tools, and document templates to extend core system functionality and automate user workflows.