Nucleus

Based in Prelog, Croatia, Nucleus is a small team (1-10 people) working exclusively in the eCommerce space, building, designing, and optimizing online stores for clients who sell products online. The agency's stated focus is on stores that "rank higher, convert better, and scale faster," positioning itself as a specialist partner for businesses running or launching WooCommerce, Shopify, or other eCommerce platforms rather than a generalist marketing shop. Its service range covers web development (custom eCommerce builds, WordPress, React/Node, PHP/Laravel/RoR, API integrations, online configurators), design (UI/UX, web and application design, branding, product and packaging design), and SEO (audits, keyword research and implementation, rich snippets, product page optimization, copywriting, link building). Store-building work includes catalog structuring, checkout optimization to reduce drop-off, and integration with payment gateways (Stripe, Google Pay, Apple Pay, instalment options), shipping and tax systems, and ERP or inventory platforms. Additional listed services include CPC advertising management on Google and Meta with retargeting and ROAS-focused campaigns, email marketing via Mailchimp or Klaviyo, ADA compliance scanning and audits, and hosting services covering WooCommerce, web apps, CloudFlare and CDN integration, and performance work aimed at handling traffic spikes and future growth. Consulting is offered across most of these service areas.