Vitalii K.

𝗘-𝗰𝗼𝗺𝗺𝗲𝗿𝗰𝗲 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁 | 𝗛𝗶𝗴𝗵-𝗟𝗼𝗮𝗱 𝗦𝘆𝘀𝘁𝗲𝗺𝘀 | 𝗼𝘀𝗖𝗼𝗺𝗺𝗲𝗿𝗰𝗲 • 𝗟𝗮𝗿𝗮𝘃𝗲𝗹 • 𝗘𝗹𝗮𝘀𝘁𝗶𝗰𝘀𝗲𝗮𝗿𝗰𝗵 I build and optimize e-commerce platforms that scale. My focus: reliable, fast, secure systems handling millions of products, complex integrations, and real-world traffic. ⬜𝐖𝐡𝐚𝐭 𝐈 𝐝𝐞𝐥𝐢𝐯𝐞𝐫 ☑️Custom e-commerce architecture for high-traffic operations ☑️Platform optimization: search performance, Core Vitals, conversion rates ☑️Security infrastructure: DDoS protection, bot prevention, compliance ☑️Technical migrations: code modernization, infrastructure upgrades, complex integrations ☑️Ongoing support and optimization as you grow ⬜𝐖𝐡𝐨 𝐈 𝐰𝐨𝐫𝐤 𝐰𝐢𝐭𝐡 Retailers scaling from thousands to millions of SKUs. Established e-commerce businesses optimizing for performance. Enterprise teams building custom marketplace solutions. ⬜𝐓𝐡𝐞 𝐫𝐞𝐚𝐥𝐢𝐭𝐲 A poorly built platform hemorrhages customers at scale. I design for real constraints - millions of products, concurrent users, inventory syncs, payment processing, search latency. I've done this 175+ times over 11 years. ⬜𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬 ✅High-Load E-commerce Systems - built platforms handling 2M+ product catalogs with custom product matching logic, Elasticsearch-powered search, and multi-language support. Managed real-time inventory sync across multiple channels, CRM integration, and complex pricing structures. ✅Performance & Security - optimized stores for Google Core Vitals (LCP, CLS, FID). Implemented Cloudflare + custom DDoS mitigation. Hardened servers against traffic spikes and bot abuse. Modernized legacy code (PHP 5.x → 8.x) on live platforms without downtime. ✅Custom Solutions - bulk product ingestion with intelligent aliasing. Multi-tier pricing and OEM-specific filtering. PDF generation from product specs. Non-standard catalog architectures. Real-time CRM/ERP data exchange. Elasticsearch integration across complex product hierarchies. ⬜𝐑𝐞𝐜𝐞𝐧𝐭 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬 → Savat-auto | Automotive parts (2M+ SKUs) Custom nomenclature system + product aliasing at scale, Cloudflare DDoS protection. Handles peak traffic reliably. → Mirpola-dekora | Home decor (60K+ products) Elasticsearch search rebuild, bilingual support, performance tuning. Improved search speed 10x+, Core Vitals optimized. → Officell | B2B office supplies (20K+ SKUs) PHP 5.x → 8.x migration, DDoS infrastructure, load testing, custom functionality. Now secure and scalable. → Ltx-led | LED/lighting products (8K+ SKUs, 3 languages) Custom architecture with intelligent search, PDF generation from specs, bot protection. → Dream-group-toys & Dm-opt | Linked B2B/B2C (10K+ products) Custom data exchange layer between two stores, CRM sync (customers, orders, pricing), multi-tier pricing. ⬜𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 E-commerce Architecture & Design | High-Load System Optimization | Performance Tuning (Core Vitals, speed, SEO) | Security & DDoS Protection | Elasticsearch Integration | Multi-Language Setup | CRM/ERP Integration | Code Modernization | Post-Launch Support | Architecture Consulting ⬜𝐒𝐤𝐢𝐥𝐥𝐬 ✔Platforms: osCommerce, Laravel, Wordpress, Magento ✔Backend: PHP, Laravel, Symfony, MySQL, Elasticsearch, Redis ✔Frontend: Vue.js, JavaScript, HTML/CSS, responsive design ✔Infrastructure & DevOps: Cloudflare, DDoS protection, Docker, server optimization, load testing ✔Tools & Systems: Git, GitHub, API integration, Google Analytics ⬜𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐑𝐞𝐭𝐮𝐫𝐧 ✔11+ years shipping e-commerce at scale ✔175+ completed projects, 100% Job Success ✔Understand both code and business impact ✔Proactive problem-solving, not just task execution ✔Transparent communication, realistic timelines Last updated: October 30, 2026