About Oleksii Horban

Merchants bring me in when nobody clearly owns the platform decisions behind their store. I decide what gets built and what gets bought, and how the store connects to its sales channels and back-office systems. Then I write the roadmap that puts the work in order and set the code-review standards that the in-house team and outside vendors both work to. You get decisions you can explain to your leadership and a plan your engineers can follow. My services range from a fixed-scope review to a monthly retainer as your fractional CTO.

The depth behind those decisions comes from 17 years in e-commerce, all of them on Magento and Adobe Commerce. I started in 2009 in Magento Inc.’s original Expert Consulting Group. There I led an 11-engineer team on the Easton-Bell Sports deployment and a 4-engineer team on Longines for the Swatch Group, and I was on call for urgent escalations. From 2015 to 2023 I was Principal Adobe Commerce Engineer at Guidance, working on 8-figure-GMV stores such as The Great Courses. Typical page-load times on those stores came down by about half.

Since 2020 I have owned the technical roadmap at Teabloom as their fractional solution architect. Seven sales channels run there on one catalog and one inventory, next to a dedicated B2B wholesale site on Adobe Commerce. At MarketNation I lead a three-engineer team on a deeply customized Adobe Commerce build and set its roadmap and code-review standards. Alongside this work I have completed more than 60 projects on Upwork since 2011, with a 100 % job success score and Top-Rated Plus status. The case studies cover The Great Courses, Teabloom, MarketNation and my time in Magento’s Expert Consulting Group.

What I am good at

• Turning business goals into technical roadmaps that non-technical leadership can act on
• Owning architecture decisions across PHP, GraphQL, headless storefronts and cloud infrastructure, and reviewing delivered code against those decisions
• Setting code-review standards for in-house engineers and outside vendors
• Running one catalog and one inventory across your own store and marketplaces such as Amazon, Walmart, Etsy and TikTok Shop
• Performance work judged by its effect on revenue, with Lighthouse scores as a secondary check
• Integrations: ERP (NetSuite, SAP), payments (Stripe, Braintree, Authorize.Net, Amazon Pay), subscriptions (Zuora, Stripe Billing), fulfillment and accounting (ShipStation, QuickBooks)

How I work

My engineering workflow runs on AI coding agents, Claude Code and Codex, with custom skills, hooks and MCP integrations. Audits get faster and code review more consistent. I help client teams adopt the same setup.

Credentials

• Adobe Commerce Architect Master certification
• 2012 Magento Imagine Challenge winner
• Upwork Top-Rated Plus, 16,000+ hours, 100 % job success

I live in Valencia, Spain, and work in English. I also serve clients in the Spanish and German markets.