Oleksandr Veselyi

Senior Shopify Engineer

I build Shopify stores that load fast, look polished, and remain stable through every theme update. Specializing in React, Next.js, and Liquid to deliver e-commerce solutions that perform reliably at scale.

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Personal projects

Independent products I'm building under my own brand, from Shopify apps to Theme Store work.

Client projects

Shopify stores I've built and maintained — custom themes, migrations, and integrations.

Services

The core areas where I help clients build, migrate, and optimize their Shopify stores — from custom theme work to technical SEO and third-party integrations.

Shopify Theme Development

Custom theme development from the ground up, or enhancement of existing themes — including sections, metaobjects, and animation, without compromising site performance.

Platform Migration

Full migration to Shopify from WooCommerce or other platforms, encompassing product catalogs, order history, and SEO redirects, with no data loss or ranking impact.

Technical SEO & Performance

Structured data implementation, Core Web Vitals optimization, and image/script performance tuning to achieve strong Lighthouse scores.

Third-Party Integrations

Klaviyo, Omnisend, custom quiz and calculator systems, and API integrations with external services.

Multi-Market & Multilingual Configuration

Implementation of Shopify Markets, including multi-currency, multi-language, and localized tax rate configurations.

About

A brief overview of my background, technical focus, and the path that led me to specialize in Shopify development.

Shopify Software Engineer

From freelance React work to Shopify engineering

I specialize in the Shopify ecosystem. My career began in freelance work, delivering React and Next.js projects for independent clients, and has since progressed to my current role as a Shopify Software Engineer.

That path built expertise beyond conventional frontend work: custom theme architecture, metaobject-driven content systems, multi-market stores, platform migrations, and integrations with Klaviyo, Omnisend, and Storepoint.

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Path

Freelance

React and Next.js projects for independent clients.

Shopify Software Engineer

Custom themes, metaobjects, migrations, and third-party integrations.

Independent work

Caster

A Shopify theme in development for the Theme Store.

PlaneDev

AI product comparison, live on the Shopify App Store.

Theme architecture

Custom storefronts built from scratch, without fighting theme updates.

Metaobject systems

Structured content models that merchants can actually maintain.

Multi-market stores

Languages, currencies, and localized tax configuration.

Have a Shopify project in mind?

Get in touch if you need a custom theme, a platform migration, or a developer comfortable working through complex metaobject structures and Liquid edge cases.