Illarion Ivanchenko

Maintain and optimize 10+ Magento 2 e-commerce stores serving 1,000,000+ users across 9 countries. Achieved 99.9% platform uptime through proactive monitoring and rapid issue resolution. Reduced incident backlog by 30% and API integration failures by 15%. Resolved 500+ production tickets with average resolution <24 hours, debugging complex product salability issues (entity_id vs row_id mismatches), and fixing checkout flow issues related to customer data invalidation and local storage problems. Supported Adyen payment gateway integration for multi-store configurations and maintained integrations with FluentCommerce, PIM, PCM, and SAP handling 10K+ daily transactions.

E-Commerce Migration & Payment Integration (Apr 2022 - Jun 2023): Migrated 2 major e-commerce stores from WordPress to Magento 2 + PWA Studio (150K customers). Integrated and troubleshot Adyen payment gateway for multi-store environment. Fixed critical issues with order placement through Magento admin panel in multi-store setup. Modified CyberSource payment system to support multi-store architecture. Led SAP PFSweb integration for order processing, delivered on time with zero production defects. Improved site response time by 30% through Fastly CDN optimization.

Distributed team environment focusing on E-Commerce migration and payment integration. Migrated 2 major e-commerce stores from WordPress to Magento 2 + PWA Studio (150K customers). Integrated and troubleshot Adyen payment gateway for multi-store environment. Fixed critical order placement issues through Magento admin panel in multi-store setup. Modified CyberSource payment system to support multi-store architecture and led SAP PFSweb integration for order processing, delivered on time with zero production defects. Improved site response time by 30% through Fastly CDN optimization.