Shopify Development

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.

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).

Browse apps →

Case Studies

Selected projects with goals, approach, and outcomes.

Read case studies →

Custom Web Apps

Dashboards, automations, integrations—Node.js/Vue.js builds.

Explore custom apps →

Want a quick estimate?

Send a short description of your store URL, goal, and timeline—I'll reply with next steps.

Get in Touch

[email protected] +386 41 998 467

Slovenj Gradec, Slovenia · Serving businesses across the EU