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Matt Grochala

@mattgrochala

E-commerce Manager at Interhandler JCB Poland who built JCB Shopify stores for Poland and Ukraine, achieving 10.6× Google and 16× Meta ROAS.

Poland

Message

At Interhandler JCB Poland, I built Shopify stores for JCB Tools, including a Ukrainian version with local language, currency, and content. The stores achieved 10.6× Google and 16× Meta ROAS.

I also launched JCB products on Amazon.de and Rozetka.ua, and used competitor and margin research to inform pricing and campaigns. I built Python scrapers to track competitor prices, catalogues, and shipping offers.

Across my e-commerce work in Poland and the UK, I’ve expanded brands across marketplaces and improved store conversion, including growing D2C sales from zero to 1,000+ orders a day at Innova Brands Ltd. / Conexus Trading Ltd. I use AI in my daily workflow for agents, content, data, and research.

Experience

Work history, roles, and key accomplishments

E-commerce Manager

Interhandler JCB Poland

Jul 2025 - Sep 2026 (1 year 2 months)

Built and managed Shopify stores for JCB's Polish distributor, including a Ukrainian version, achieving 10.6x Google and 16x Meta ROAS. Led localisation, merchandising, CRO, and a team of seven.

Shopify Markets Liquid GA4 Elevar Klaviyo Judge.Me Python Google Ads Meta Ads TikTokAds Allegro Ads Amazon Rozetka eBay Senuto SEMrush Helium 10 Expertise AI Agents JSON LD SEO CRO

E-commerce Manager

Onyx International

Sep 2024 - Jun 2025 (9 months)

Led expansion of the Onyx brand onto European and US Amazon marketplaces, managing local listings, compliance, logistics, and advertising. Ran sales on multiple marketplaces and automated workflows with Baselinker and AI.

Amazon eBay Allegro Erli Empik OnBuy BaseLinker Google Apps Script AI Ecommerce Advertising

E-commerce Manager

Shopmonk Ltd.

May 2020 - Oct 2023 (3 years 5 months)

Managed company stores alongside multiple Amazon and eBay accounts, optimising conversion and UX, running advertising campaigns, and integrating new sales channels. Oversaw a team of five and warehouse operations.

Amazon eBay OnBuy ManoMano Cdiscount SEO SEM Ecommerce Team Leadership Warehouse operations

E-commerce Manager

Innova Brands Ltd. / Conexus Trading Ltd.

Jan 2013 - Dec 2020 (7 years 11 months)

Grew D2C sales from zero to over 1,000 orders per day on a 35,000-SKU catalogue, managing Shopify and WordPress stores alongside eBay and Amazon. Led the e-commerce team and administered Linnworks and inventory databases.

Shopify WordPress eBay Amazon Linnworks Inventory Management Ecommerce Team Leadership