Open to opportunities

Maria Vinnik

@mariavinnik

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Senior Shopify & eCommerce Developer creating scalable, high-performing Shopify Plus stores.

United States

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What I'm looking for

I’m looking to build and scale Shopify Plus and headless eCommerce experiences that drive measurable revenue—focused on performance, SEO/CRO, secure integrations, and smooth checkout UX—while using modern tooling to ship reliably in agile teams.

I’m a Senior Shopify & eCommerce Developer with 8 years of helping brands grow online. I specialize in scalable Shopify Plus builds—using Shopify Liquid, Storefront API, Shopify Functions, and Hydrogen—to deliver smooth, fast shopping experiences, custom apps, and seamless integrations.

My work focuses on measurable growth: I’ve helped brands increase sales by 20–40%, improve retention by 26%, and reduce cart abandonment by 15%. I bring secure, SEO-friendly, user-friendly engineering—optimizing performance (Core Web Vitals, lazy loading, image compression), building conversion-focused checkout experiences, and integrating systems across ERP/CRM/payment workflows.

Experience

Work history, roles, and key accomplishments

Full Stack Shopify Developer

Rootways

Jun 2023 - Nov 2025 (2 years 5 months)

Built custom Shopify apps and storefronts using Storefront API, Checkout UI Extensions, and Node.js/Express, boosting revenue around 30% and customer retention 26%. Optimized Liquid themes and Core Web Vitals (40% faster), implemented secure GDPR/PCI-compliant checkout, and automated subscriptions and inventory syncing.

Shopify Shopify Liquid Storefront API Checkout UI Extensions Node GraphQL REST APIs CI CD AWS

Shopify Developer (CRO)

KiwiCommerce

Feb 2021 - Mar 2023 (2 years 1 month)

Developed custom Shopify apps and integrations across ERP, CRM, and payments using REST/GraphQL to improve merchant onboarding speed and data flow. Improved Core Web Vitals/SEO and ran A/B tests to increase conversions, while writing unit/integration tests in Jest and RSpec (90% coverage).

Liquid SEO Conversion Rate Optimization A B Testing REST APIs GraphQL Jest RSpec

Shopify Developer

TheCommerceShop

Nov 2018 - Dec 2022 (4 years 1 month)

Designed and launched mobile-friendly Shopify themes with HTML/CSS/JavaScript, improving mobile conversion rates by 20%. Led SEO and conversion optimization by enhancing site structure, meta tags, and content, increasing organic traffic by 25%.

Shopify Shopify Liquid HTML5 CSS3 JavaScript Responsive Design SEO Meta Tag Optimization Conversion Rate Optimization Mobile Optimizations

Website Designer (Headless)

Ecart Atlanta

May 2017 - Sep 2018 (1 year 4 months)

Directed end-to-end UI/UX strategy and built responsive design systems and user flows for high-traffic eCommerce sites. Implemented headless storefronts with Next.js and Hydrogen, orchestrating ERP/CRM/marketing integrations and achieving Lighthouse scores above 95.

Next.js Hydrogen UI UX Design Wireframing Responsive Design User Flows ERP Integration A B Testing Lighthouse Performance

Education

Degrees, certifications, and relevant coursework

Georgia State University Perimeter College

Associate degree in Business Administration, Business Administration

2018 - 2022

Earned an Associate degree in Business Administration.

University of Wisconsin

Master's degree in Computer Science, Computer Science

2004 - 2011

Pursued a Master’s degree in Computer Science, including work building headless Shopify prototypes with Hydrogen. Focused on performance, security, and applying SEO best practices.