// discovery
Scope & technical planning
Map requirements, integration risks, and implementation options before development starts.
Shopify development agency
We ship Shopify stores that load fast and convert.
CallNext builds, migrates, and maintains Shopify themes, apps, and integrations for brands that need engineering they can rely on.
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LiquidOnline Store 2.0Shopify FunctionsHydrogenCheckout extensionsGraphQL Admin APIShopify CLIAI-assisted deliveryMetaobjectsUX/UI designFigmaThree.js3D configuratorsKlaviyoRechargeHeadlessCROCore Web VitalsShopify PlusLiquidOnline Store 2.0Shopify FunctionsHydrogenCheckout extensionsGraphQL Admin APIShopify CLIAI-assisted deliveryMetaobjectsUX/UI designFigmaThree.js3D configuratorsKlaviyoRechargeHeadlessCROCore Web VitalsShopify Plus
Brands that trust CallNext
AI-accelerated delivery
We leverage AI with purpose — so you ship faster without sacrificing quality.
// why we use ai
AI accelerates our work — your team still gets human judgment on every decision.
We use AI tools throughout Shopify delivery to move faster on repeatable work, catch issues earlier, and document what we build. It is not a shortcut around quality. Every theme, integration, and checkout change is reviewed, tested, and signed off by experienced developers before it reaches your store.
// what you get
Faster delivery on scoped work
Less time on boilerplate, research, and rework — more time on the problems that affect conversion and revenue.
Stronger QA before launch
Broader test coverage, edge-case checks, and regression scenarios so fewer surprises go live.
Clearer handoff for your team
Better section docs, implementation notes, and maintainability context after every project.
Sharper performance & CRO audits
Faster analysis of theme weight, UX friction, and checkout drop-offs — with fixes prioritized by impact.
// build
Theme & app development
Speed up Liquid, JavaScript, refactors, and repetitive patterns while keeping code review strict.
// qa
Testing & validation
Expand QA checklists, device scenarios, and checkout flows so launches are more stable.
// optimize
Performance & CRO
Identify Core Web Vitals issues, PDP friction, and cart UX gaps with faster audit cycles.
Diagnosis
If this sounds familiar, you're in the right place
Your internal team or generic agency can't solve complex integrations
App Store apps don't cover your real checkout or inventory workflow
Your conversion rate stalled and nobody can tell you why, technically
You need to scale to Shopify Plus but fear breaking what already works
You want a product experience (3D configurator, personalization) no template offers
We don't sell themes. We solve complex ecommerce operations on Shopify.
Services
What we build and for whom
Every service has a specific use case. If none fit, we figure it out together in the diagnosis.
Why us
We're not an install agency. We're digital architecture partners.
There are hundreds of agencies that install a theme and launch a basic store. We step in when that isn't enough — when the business has its own logic and needs infrastructure that can support it.
We work with post-template brands
We understand real operational complexity — not just Shopify, but the business behind every requirement.
Technical diagnosis first, quote second
Every project starts by auditing your stack. We don't propose what we don't understand.
Development with real UX/UI strategy
Not just layout — we combine engineering with informed experience decisions.
We leave installed capability
We document and train your team. The goal is independence, not permanent dependency.
Process
How we work — no black boxes.
Technical diagnosis
We audit your store, stack, and real bottlenecks — not a generic form.
Architecture proposal
We define what gets built, in what priority, and why. No black boxes.
Iterative development
Visible deliveries every sprint. You review, approve, adjust.
QA & performance
We validate speed, conversion, and stability before launch.
Post-launch support
Real support with a defined SLA — not a ticket nobody reads.
Results
Real metrics from real projects
+38%
Average conversion rate post-optimization
-62%
Reduction in checkout time with custom extensions
42d
Average Plus project delivery time
3.2x
Average ROI on custom development investment
We required storefront architecture aligned with how HUMANCENTRIC sells workspace products—not a generic theme stretched across our catalog. Eduard and the CallNext team delivered reusable Online Store 2.0 sections our marketing team operates independently, checkout UI extensions within Shopify’s native flow, and substantive mobile performance improvements. Communication remained structured throughout; milestones landed on schedule; and they continue as our technical partner.
Packages
Investment by type of operation
Ranges are referential. Real scope is defined in the technical diagnosis.
Shopify Starter Build
New stores / small brands
Theme Customization
Existing small stores
GA4 / Meta / Analytics Setup
Stores that need tracking
Monthly Support Lite
RetainerSmall brands with support needs
Plan Basic
Not sure which package fits your operation? We define it together in the free technical diagnosis.
FAQ
Frequently asked questions
The most common questions before the first call. If yours isn't here, we'll answer it in the diagnosis.
Yes. Most of our projects start on live stores with existing themes, apps, and custom code. We audit what you have, keep what works, and rebuild only what creates risk or blocks growth.
A focused Plus implementation typically takes 6–12 weeks. Larger rebuilds with checkout extensions, Functions, and multi-market setup usually take 12–20 weeks. Exact timing comes from the technical diagnosis.
We map your stack early, flag conflicts, and propose a migration path—replace, rebuild, or wrap the integration—so launch isn't blocked by a brittle dependency.
Yes. We offer retainers with a defined SLA for fixes, iterations, and performance work. The goal is stability after launch, plus a clear handoff so your team can operate independently.
Next step
Your store already grew. It's time for your Shopify to catch up.
Book your free technical diagnosis →No commitment — 30 minutes to identify what your operation actually needs.