Full-Stack Developer

Experience: 8+ years

Summary

Full-Stack Developer with 8+ years of commercial experience building scalable web applications and high-load systems. Strong background in both frontend and backend development, with a focus on performance, real-time data processing, and system reliability. Proven ability to design and implement solutions handling large volumes of concurrent connections and complex business logic.

Technical Skills

Languages & Core Technologies:

• JavaScript (ES6+)
• PHP
• Go (Golang)
• Java
• Kotlin
• C / C++
• HTML5, CSS3

Frontend:

• Responsive and adaptive layout development
• Cross-browser compatibility
• UI/UX implementation from design mockups (Figma, PSD)
• Interactive UI and animations
• CSS frameworks

Backend:

• API design and development
• High-load system architecture
• Real-time data processing (WebSockets)
• PHP extensions development
• Performance optimization and scalability

Infrastructure & Tools:

• Nginx
• PHP-FPM
• Client-server architecture
• CMS integrations

Key Projects

High-Load WebSocket System

• Designed and implemented a system managing 500+ concurrent WebSocket connections
• Developed custom data processing algorithms for real-time data streaming
• Ensured system stability and performance under load
• Technologies: JavaScript, PHP, Go, HTML, CSS

Cross-Platform Application (iOS / Android / Web)

• Full-cycle development of client and server architecture
• Built scalable backend supporting multiple platforms
• Integrated frontend, mobile, and backend systems
• Technologies: JavaScript, PHP, C, Kotlin, Nginx, PHP-FPM

LiqPay PHP Extension

• Developed and maintained a widely used PHP extension for LiqPay integration
• Focused on reliability and ease of integration
• GitHub: https://github.com/victor-simon/c-liqpay

Strengths

• Strong analytical and problem-solving skills
• Experience working with high-load systems
• Ability to process large volumes of information efficiently
• Fast decision-making in complex technical scenarios
• Multitasking and deadline-oriented

Languages

• Ukrainian — conversational
• Russian — conversational
• Polish — conversational
• English — basic