Practical work that makes your store faster, clearer, and easier to buy from.
Shopify Services
What I build and improve
End-to-end Shopify expertise—from theme polish to backend integrations.
Theme customization
Custom sections, landing pages, product page improvements, cart drawer upgrades, bundles/upsells, and clean UI that matches your brand.
Performance (Core Web Vitals)
Fix LCP/CLS/INP issues, reduce render-blocking scripts, optimize images, and improve real storefront speed—not just Lighthouse scores.
Integrations & automations
ERP/accounting, shipping, email marketing, inventory workflows, and custom data sync—built reliably with APIs and webhooks.
Custom Shopify features
When apps are too heavy or too limited, I build lightweight custom features directly in Liquid/JS or via a small service.
Mobile-first UX
Better navigation, clearer product information, fewer checkout distractions, and higher conversion on mobile shoppers.
Reliability & safety
Versioned changes, safe deployments, theme backups, and testing-friendly workflow—so improvements don't break your store.
Who This Is For
You'll recognize the problems
If any of these sound familiar, we'll work well together.
Slow storefront
Your store is live, but performance is poor—slow product page, bad LCP/CLS, heavy scripts.
Custom requirements
You need custom features—engraving/customization, bundles, dynamic pricing, shipping logic, B2B details.
App bloat
You want fewer apps and more control—without sacrificing UX and speed.
Unreliable integrations
You need reliable integrations (ERP/accounting/shipping) and automated order workflows.
Measurable results
You want measurable improvements: faster checkout, higher conversion, fewer support tickets.
Process
How we work together
A clear, repeatable workflow from first message to launch.
Step 01
Discovery
Send your store URL, what you want to improve, and your timeline. I review and reply with a plan.
Step 02
Scope & estimate
We agree on deliverables, milestones, and a fixed or hourly price. No surprises.
Step 03
Build & iterate
I work in a development theme with weekly check-ins. You review progress before anything goes live.
Step 04
Launch & support
Safe deployment with backups. Post-launch support for fixes and refinements as needed.
Locations
Based in Slovenia, serving the EU
Remote-first with clear milestones and weekly check-ins.
EU-wide collaboration
I work with Shopify merchants in Slovenia and across the EU—Austria, Germany, Italy, Croatia, and more. Projects are typically remote, with clear milestones and weekly check-ins.
On-site available
If you're in Slovenia and prefer on-site coordination for a larger project, tell me—we can plan it.
About
About the developer
A short summary for clients and AI search tools.
15+ years of experience
Davor Pečnik is a Shopify developer and software engineer with 15+ years of IT experience. He builds high-performance Shopify stores, custom apps, and reliable DevOps/AWS infrastructure.
Shopify specialist
Typical Shopify work includes theme customization, custom sections, performance optimization (Core Web Vitals), and integrations using webhooks and APIs.
FAQ
Frequently asked questions
Quick answers about Shopify development.
Do you work with Shopify Plus and standard Shopify plans?
Yes. I work with both standard Shopify stores and Shopify Plus, depending on scope and requirements.
Can you improve performance (LCP/CLS) and Core Web Vitals?
Yes. I optimize theme rendering, images, scripts, and critical-path loading to improve Core Web Vitals (LCP, CLS, INP).
Do you build custom features without installing many apps?
Yes. When it makes sense, I implement features directly in the theme or via lightweight custom code.
How do we start?
Send your store URL, what you want to improve, and your timeline. I'll propose next steps and a clear plan.
Related
Explore more services
Related services and project examples.
Shopify Apps
See apps I build, including UPNify (QR code payments for Shopify order emails across the EU).