Kostiantyn Lozhkin

- Manage e-commerce operations across Shopify, Amazon, eBay, and Kaufland. - Work on product catalog synchronization, SKU mapping, and inventory data consistency across marketplaces. - Support marketplace integrations, IT infrastructure, and operational automation. - Assist with troubleshooting technical issues and improving internal workflows.

- Contributed to Magento 1-to-2 migration initiatives supporting multiple storefronts - Developed and maintained REST/GraphQL integrations with Storyblok, Crowdin, and Cliplister. - Built an automated localization workflow integrated with Crowdin. - Developed dynamic delivery-time calculation system. - Optimized Bloomreach search integrations and product data feeds. - Implemented custom URL routing and a server-side Google Tag Manager proxy. - Worked with PHP, Magento, MySQL, Redis, Docker, and Kubernetes.

Developed a custom Magento 2 extension for calculating shipping costs and delivery times, subsequently released by the company as a commercially available product.

- Developed and maintained Magento 1 and Magento 2 platforms. - Contributed to international storefront launches in France, the Netherlands, Belgium, and Sweden. - Integrated Tradebyte TB.One for automated product imports and order exports. - Developed AWS S3 integrations for media asset delivery. - Automated full and partial refund processes. - Worked with Docker, Nginx, MySQL, Solr, and Varnish.

- Optimized PHP core code and implemented a tailored caching mechanism based on Magento cache, significantly reducing page load times. - Extended custom API endpoints, integrated custom order metadata, and automated store-specific modular email templates. - Enhanced testing coverage by upgrading existing Selenium automated testing suites.

- Developed and maintained Magento-based e-commerce platforms, implementing custom modules and backend functionality. - Built scalable CSV/XML product feeds for external marketing partners. - Integrated Google Maps API for automated customer address verification. - Developed an integration between Magento and bookingkit, enabling customers to purchase bookable experiences and synchronizing reservations. - Integrated external supplier APIs, Mailchimp, and Google Tag Manager.

- Developed a centralized multi-store order management system using Zend Framework. - Implemented subscription billing workflows supporting different payment and shipping scenarios. - Developed fraud-prevention logic to detect duplicate customer addresses and prevent repeated promotional orders. - Maintained and extended PHP-based backend functionality.

- Developed a custom web-based educational platform for online testing and distance learning. - Administered the institute's website and internal file server infrastructure. - Supported remote educational sessions and video streaming using Adobe Connect. - Developed educational web applications using PHP, HTML, CSS, and JavaScript.

- Provided technical support for enterprise customers using Yandex Mail for Domains. - Assisted with domain configuration, DNS delegation, CNAME, and MX records. - Investigated technical issues, reproduced bugs, and coordinated with developers through Jira. - Maintained internal PHP-based support tools and contributed to Ukrainian localization.

- Google Adwords advertisement; - Social networks advertisement campaigns; - Banner accommodation on thematic websites; - Creation of templates for email newsletters.

- Sysadmin of 40 PCs running OS Windows; - Administration of Windows Server with Active Directory Users and File Server; - Onsite IT Support.