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wizzerion

Roman Mishyn

@wizzerion

Automation, Scraping, Dev

Ukraine
English, German, Russian, Ukrainian
About me
Hi, I am Roman, a backend software engineer specializing in Python, Go (Golang), and automated data pipelines. I build high-performance web scrapers, integrate complex REST APIs, and manage robust SQL/NoSQL databases. My focus is on writing clean, modular code and delivering perfectly structured data datasets (CSV/JSON/SQL). Whether you need a dynamic scraper or a custom automation script, I am here to build a reliable solution for you.... Read more

Skills

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wizzerion
Roman Mishyn
Offline • 
Average response time: 1 hour

See my services

Data Scraping
I will build a custom python web scraper for data extraction
From$30 / projectMore details
Automations
I will automate PDF data extraction into google sheets with zapier
From$150 / projectMore details

Portfolio

Work experience

Freelance_Web Designer

Backend & Automation Engineer

Freelance Web Designer • Freelance

Feb 2024 - Present • 2 yrs 5 mos

Engineered high-performance backend solutions, data extraction pipelines, and automation tools as an independent developer. Key Achievements: Data Infrastructure: Designed and built a concurrent real estate data scraping platform ("Immogucker") in Python, later migrating performance-critical worker components to Go (Golang) to achieve sub-millisecond execution speeds and optimized memory footprint under heavy concurrent processing. Advanced Scraping Pipelines: Formulated complex parsing scripts using Scrapy, Playwright, and BeautifulSoup. Implemented robust proxy rotation, user-agent switching, and custom anti-bot bypass mechanics to extract structured layout data smoothly. Storage & API Design: Structured relational schemas in PostgreSQL and dynamic document models in MongoDB. Developed lightweight, high-throughput REST APIs using Gin (Go) with manual ACK validation frameworks. CI/CD: Containerized entire environments via Docker.