Олег Гунько

Developed a distributed web scraping system using Scrapy/ScrapyRT to collect 10k+ Rozetka.ua listings daily. Built a FastAPI + SQLAlchemy (PostgreSQL) backend serving competitor pricing with sub-100ms query latency and a Next.js dashboard for real-time analysis.

Designed a loosely coupled microservice architecture for independently deployable, horizontally scalable order workflows. Implemented async Kafka communication for email notifications, built a Python Selenium/BeautifulSoup4 price tracker for alerts, and configured Traefik load balancing to reduce average response time by 30%.

Created a layered architecture separating UI from business logic to improve testability and extensibility. Built a JWT-protected REST API, integrated Open Library imports to eliminate manual entry, and added unit/integration test coverage for critical flows.

Automated manual financial reporting workflows, reducing human errors by 95%. Built Excel macros (VBScript) to convert report formats and cut processing time from 4 hours to 15 minutes, and created a Python service to fetch reports from Checkbox API and email them via a Windows executable scheduled daily.

Integrated the OpenAI Whisper API to convert voice messages to text with 95%+ accuracy, reducing manual transcription time by 100%. Implemented Stripe subscriptions and deployed the app on Vercel with edge functions for low-latency responses.

Completed a Bachelor's degree in Computer Science at KROK University, covering Python fundamentals, OOP in C#, and full-stack development with React and Node.js/Express. Focused on application architecture and systems thinking.