Java Backend Developer (Logistics Platform)

Freelance remote (USA)

• REST API development for a logistics platform according to client business requirements
• Implemented order management features for inter-state vehicle transportation, including scenarios where the customer travels by plane while their vehicle is transported to the destination
• Backend optimization and refactoring to reduce server response times for mobile driver and customer applications
• Implemented truck handover functionality with automatic recording of fuel level, mileage, and cargo inventory at the time of transfer
• Impact: Eliminated manual data entry and tracking processes; improved platform performance enabled business to attract more clients and increase operational capacity

PeopleSoft Developer (Back-end + Front-end)

St. Lawrence College | Kingston, Canada

• Developed faculty workload planning and classroom scheduling system (100+ faculty members, 50+ classrooms, 1000+ teaching hours per semester)
• Impact: Automated government workload reporting – reduced processing time from 5 days to 30 minutes (~95% efficiency gain)
• Designed and implemented complex PL/SQL queries (MS SQL) for schedule and workload data
• Built client-server interactions and unit tests
• Managed data synchronization and transfers between multiple databases
• Worked with Application Engine, Oracle SQR, Data Mover, Component Interface

Java Backend Developer (Construction Tech)

Freelance remotely

• Compensation management backend: automated calculation of builder and contractor payments with volume-based compensation, variable bonuses, deductions, and tax computation
• Material cost estimation backend: dynamic pricing engine for construction materials with parameter-driven budgeting and cost forecasting
• Impact: 60% acceleration in cost estimation process

Backend Developer (Enterprise Platform)

UKRPROMINVEST-AGRO | Ukraine

Developed 10+ backend systems and mobile applications for large-scale enterprise platform across three agricultural organizations.

Project 1: Mobile Data Management Platform

• Platform serving 900+ users (3 organizations × 25 cooperatives × 12 specialists) with automatic recording of all operations from soil preparation through harvest
• Functionality: NDVI analysis from drone imagery, automatic detection of pests, plant diseases, and weather damage
• Impact: 2 hours daily time savings per user = 360,000 person-hours annually
• Impact: Significant yield increase due to real-time response to crop condition changes

Project 2: GPS Routing System

• Managed 200+ commercial trucks with RTK GPS corrections (0.36m accuracy) for safe crop transportation across 22,300 hectares
• Problem: Autumn fog with 10-15m visibility caused loaded trucks to fall into drainage ponds
• Solution: GPS-based route planning with audio/haptic alerts for route deviations
• Impact: 100% incident prevention (zero accidents after implementation), driver safety and crop preservation

Project 3: Industrial Equipment Monitoring System

• Centralized monitoring of hundreds of equipment units (tractors, seeders, combines) with vibration sensors
• Automatic generation of maintenance signals based on maintenance schedules and sensor readings
• Impact: Reduced equipment downtime during critical harvest periods, successfully replicated to 2 sugar refineries

General Technical Achievements:

• Developed data linking mechanisms for multi-level ERP systems
• Created complex data exchange solutions between databases via API
• Designed and developed relational databases supporting all platforms
• Wrote optimized SQL queries for large-scale data manipulation
• Developed backend data aggregation portal from multiple sources
• Complete reorganization of file storage infrastructure (FTP + REST APIs)

Software Developer (Back-end)

Autologistics LLC | Ukraine

• Designed and implemented robust data exchange pipelines between multiple databases
• Developed RESTful APIs to integrate external systems efficiently
• Built logging and monitoring systems to track and audit all data transfer operations
• Optimized data workflows for performance and reliability across distributed systems

Financial Manager

Wizard Group | Ukraine

• Managed four company branches
• Created accounting methodologies and implemented software solutions
• Prepared financial plans, purchase plans, and monthly budgets
• Oversaw budgeting processes and payroll
• Controlled cash flow, warehouse inventory, and vendor payments

Project Manager (1C)

Favorite-S LLC | Ukraine

• Led 1C software development and implementation projects end-to-end
• Conducted pre-project assessments and wrote technical documentation
• Coordinated task setting, programming, testing, and go-live operations
• Trained client personnel and supported onboarding processes

1C Programmer

Qoders LLC | Ukraine

• Developed automation solutions using 1C for accounting and warehouse systems
• Integrated software with trading equipment
• Administered 1C server infrastructure

1C Programmer

Favorite-S LLC | Ukraine

• Developed 1C-based accounting systems
• Localized software for compliance with national legislation