Leonid Fesiuk

Domain: Web Applications Worked on frontend and backend features for web applications Integrated REST APIs and worked with relational databases Used SQL queries and Git-based version control Built responsive UI components Supported debugging, error documentation and technical improvements Contributed to code reviews and technical documentation Collaborated with project management, design and development teams Technologies: REST APIs, SQL, Databases, Git, Frontend, Backend, UI/UX, Web Applications

Built an automated procurement and goods distribution system Supported a retail network with 25+ stores Developed ordering logic based on sales trends, seasonality and promotions Automated supplier order creation and store distribution Integrated workflows with existing accounting software Created a React-based interface for monitoring and manual adjustments Improved process transparency for purchasing and stock planning Technologies: Python, FastAPI, Pandas, React, SQLAlchemy, Docker, ERP Integration

Developed software solutions for retail and production processes Worked on forecasting, supply planning and process automation  Built backend logic for production forecasting across the company’s product range Supported capacity planning for production facilities Developed a meat supply automation system for a retail network with 20+ stores Implemented ordering logic, supply planning and ERP/API integration Worked with data processing and database-related backend tasks Technologies: Python, FastAPI, P