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FRONTE ND DEVELOPER
Oleh Onoprienko
Kharkiv, Ukraine
Phone: [open contact info](look above in the "contact info" section)
Email: [open contact info](look above in the "contact info" section)
Telegram: @shallowgiggs

🎯 ABOUT ME 💼 WORK EXPERIENCE
Proactive and technically strong Frontend Developer with Tatragarden.ua — Online store of garden equipment
experience in building responsive web HTML Coder / Frontend developer
interfaces, API integrations, and AI-powered solutions. 📍 (September 2019 – March 2023)
Responsibilities:
Confident working with HTML, CSS, JavaScript,
Website layout development from Figma to HTML/CSS/JS
jQuery, and PHP. Experienced in integrating third-party ser-
Integration with OpenCart CMS
vices, optimizing performance, and improving Support and development of tatragarden.ua, teslaweld.com
UX/UI. Highly interested in automation, AI integrations, Landing page development for marketing campaigns
and scalable web solutions. Page speed optimization and basic SEO improvements
I love writing universal scripts with minimal repetitive code. Content management:
I think in terms of UX: not just code, but convenience for text, images, product cards
the end user. Collaboration with marketing team
I'm looking for a team where I can grow in AI integrations
Business Booster https://my.bbooster.online
and products with smart logic.
Web developer / Frontend developer
📍
🛠 TECHNICAL SKILLS (March 2023 – Present)
Responsibilities:
Development of interfaces using HTML, CSS, and JavaScript
Frontend: Integration of external APIs (Telegram, Twilio, GetCourse)
HTML5, CSS3, SCSS Configuration of AI bots for calls and messaging
Working with PHP scripts, logging, and error handling
JavaScript (ES6+), jQuery
Implementation of analytics, UTM tracking, and event processing
Responsive & cross-browser layout
Iframe/Widget Support and Security
DOM, timers, animations UI/UX improvements: progress bars, forms, quizzes
Figma → HTML Code and performance optimization, automation
Full-Stack / Backend: Writing flexible block display logic
PHP (PDO, basic OOP) Error handling, logging, automation
MySQL
AJAX (fetch, jQuery ajax)
Logging, cron scripts,
🧩 PROJECTS AND ACHIEVEMENTS
AI & Интеграции: Bbooster.online / AI Calling Bot
Telegram Bot API Developed AI-powered calling interface using ElevenLabs and
Twilio.
Twilio (calls, webhooks),
Integration with GetCourse, data transfer between Telegram
ElevenLabs AI integration
and CRM
GetCourse API Debugging WebAssembly and Memory Optimization
Webinar time tracking system (PHP + JS)
Real-time attendance tracking, flexible filtering, optimized
database load.
Flexible data filtering by categories and users
Calculation of the total time with minimum load on the database
Implementation of event and error logging
Quizzes & Landing Pages (HTML + CSS + JS)
Layout of quizzes with a progress bar and state saving
Implementing smooth fadeIn and random animation of elements
Integration of social sharing buttons (Facebook, Telegram,
WhatsApp)