Hi, my name is
Sergey Ovsyannikov
I build solutions with WordPress, WooCommerce & Python
A full-stack developer focused on business automation, API integrations and scalable eCommerce solutions. Based in Chiang Mai, working worldwide.
About Me
I’m a full-stack developer with over 7 years of experience building web solutions. My core focus is on WordPress, WooCommerce, and custom plugin development — with a strong backend skillset in PHP and Python.
I specialize in building scalable systems, API integrations, and automation tools. I’ve worked on everything from e-commerce marketplaces and booking platforms to Python-based data scrapers and admin tools.
Most of my freelance work comes through Upwork, where I collaborate with international clients on fast-paced and long-term projects. I care deeply about maintainable code, clean UI, and real-world results for businesses.
My stack includes: WordPress, WooCommerce, PHP, ACF, WPML, REST APIs, JavaScript, Tailwind, Docker, Python (FastAPI, Selenium, BeautifulSoup), and Git-based workflows.
Tech Stack
Featured Projects
YogaEM - Elavon Integration
Custom WooCommerce cancellation logic and MemberPress integration with Elavon payment gateway. Built for high-volume yoga memebership platform.
Boat Rental Marketplace
Multilingual booking platform with WP Rentals, WCFM, time-slot logic and geolocation filter. Built with ACF, WPML and custom booking logic.
GTIN Agent - Woo + Python
Custom WordPress plugin to fetch GTINs by ASIN for WooCommerce products. Uses Action Scheduler, admin panel, and Amazon scraping — no external APIs.
WC FrontPad Integration
Custom plugin to sync WooCommerce orders with FrontPad CRM. Handles product mapping, status control, API erros amd logging.
Contacts
Let's work together - feel free to reach out