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Magento-certified Frontend Developer with 10+ years of commercial experience delivering and modernizing e-commerce storefronts. I’m specialized in Magento 2, Hyvä and Luma theme development, Hyvä Checkout and Magewire customization, responsive implementation, and performance optimization. I’m comfortable taking over inherited codebases, clarifying incomplete requirements, estimating work, and communicating delivery risks early—while coordinating effectively with designers, backend engineers, QA, and project managers.…Magento-certified Frontend Developer with 10+ years of commercial experience delivering and modernizing e-commerce storefronts. I’m specialized in Magento 2, Hyvä and Luma theme development, Hyvä Checkout and Magewire customization, responsive implementation, and performance optimization. I’m comfortable taking over inherited codebases, clarifying incomplete requirements, estimating work, and communicating delivery risks early—while coordinating effectively with designers, backend engineers, QA, and project managers.

Oksana Serhiienko

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Magento-certified Frontend Developer with 10+ years of commercial experience delivering and modernizing e-commerce storefronts. I’m specialized in Magento 2, Hyvä and Luma theme development, Hyvä Checkout and Magewire customization, responsive implementation, and performance optimization. I’m comfortable taking over inherited codebases, clarifying incomplete requirements, estimating work, and communicating delivery risks early—while coordinating effectively with designers, backend engineers, QA, and project managers.…Magento-certified Frontend Developer with 10+ years of commercial experience delivering and modernizing e-commerce storefronts. I’m specialized in Magento 2, Hyvä and Luma theme development, Hyvä Checkout and Magewire customization, responsive implementation, and performance optimization. I’m comfortable taking over inherited codebases, clarifying incomplete requirements, estimating work, and communicating delivery risks early—while coordinating effectively with designers, backend engineers, QA, and project managers.

Available to hire

Magento-certified Frontend Developer with 10+ years of commercial experience delivering and modernizing e-commerce storefronts. I’m specialized in Magento 2, Hyvä and Luma theme development, Hyvä Checkout and Magewire customization, responsive implementation, and performance optimization.

I’m comfortable taking over inherited codebases, clarifying incomplete requirements, estimating work, and communicating delivery risks early—while coordinating effectively with designers, backend engineers, QA, and project managers.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Beginner

Language

English

Intermediate

Ukrainian

Fluent

Russian

Fluent

Work Experience

Frontend Developer — Magento 2 / Hyvä at WDevs, Inc

June 1, 2025 - February 1, 2026

Developed and maintained a Magento 2 storefront using the Luma theme, converting mockups into responsive layouts across desktop, tablet, and mobile. Customized theme, checkout, product/category pages, CMS content, and frontend components using HTML5/CSS3/LESS, JavaScript, jQuery, Knockout.js, RequireJS, and XML. Improved frontend performance and Core Web Vitals and ensured cross-browser compatibility using BrowserStack. Collaborated with designers, backend developers, QA, and project managers throughout the development lifecycle.

Frontend Developer — E-commerce at FindCanary

February 1, 2023 - September 1, 2024

Supported up to four active e-commerce projects, delivering enhancements, bug fixes, responsive improvements, and performance work while managing frequent context switching. Migrated Magento 2 storefronts from Luma to Hyvä for multiple clients by rebuilding themes for performance, maintainability, and responsive UX. Implemented complex frontend functionality including product configuration, pricing logic, and dynamic quantity calculations for multi-piece tile products. Took over and improved an inherited React/TypeScript codebase for Fatty's Tattoos and integrated it with a WordPress backend powered by NestJS.

Magento Frontend Developer at Overdose

May 1, 2019 - November 1, 2022

Built custom Magento themes, page templates, and reusable UI components (menus, sliders, popups, accordions, dynamic content). Customized checkout experiences with additional fields, static blocks, loading states, and business-specific frontend behavior. Resolved styling, compatibility, performance, and merge-related defects; participated in code reviews and coordinated technical risks with project managers.

Magento & Frontend Developer at SAM Solutions

May 1, 2017 - January 1, 2019

Developed Magento storefronts and custom page templates for retail and e-commerce projects, contributing to architecture, estimation, sprint planning, demos, and optimization. Took over inherited projects, diagnosed frontend defects, and delivered redesign, styling, and custom functional work across Magento and WordPress. Supported and mentored junior Magento developers, sharing implementation approaches and reviewing work to reduce follow-up fixes.

Freelance Magento & Frontend Developer

February 20, 2014 - Present

Delivered Magento 2, Hyvä, and WordPress projects from implementation to launch, including work starting with incomplete requirements or limited design coverage. Completed a React-to-Magento 2 Hyvä migration (DForiginal) by clarifying open decisions, building responsive components, and resolving migration issues. Developed and customized Hyvä/Luma storefronts and Hyvä Checkout with Magewire, including custom blocks and checkout-step flow changes. Built and maintained WordPress and WooCommerce sites with Gutenberg/ACF components, integrations, debugging, and performance improvements.

Magento & Frontend Developer at Freelance

February 1, 2014 - August 10, 2026

• Deliver Magento 2 and WordPress projects from implementation through launch, including assignments that began with incomplete requirements or limited design coverage. • Helped complete the DForiginal migration from a React storefront to Magento 2 with Hyvä by clarifying open decisions, implementing responsive frontend components, resolving migration issues, and supporting delivery. • Develop and customize Hyvä and Luma storefronts and Hyvä Checkout with Magewire, including custom blocks, checkout-step changes, additional fields, and business-specific flow adjustments. • Identify UI, integration, and estimation risks early and propose practical alternatives when design or product-management support is limited. • Build and maintain WordPress and WooCommerce websites, including responsive themes, Gutenberg and ACF components, integrations, debugging, and performance improvements.