High-Velocity Shopify Plus & Liquid Engineering for US Brands
Stop burning ad spend on slow themes and $600/month recurring app subscriptions that drag down mobile conversion rates. Mr Umer Malik builds custom, sub-1.2s Shopify and Shopify Plus storefronts specifically for high-growth American D2C brands and multi-channel retailers—with synchronized daytime US collaboration under Delaware mutual NDA.
Core Capabilities & Production Deliverables
Direct architectural execution by senior engineer Mr Umer Malik with zero agency dilution.
Custom Liquid OS 2.0 Theme Architecture
Handcrafted JSON template architectures built from scratch with zero page-builder apps, achieving sub-1.2s LCP that maximizes ad conversions.
Native Shopify Functions & Private Apps
Eliminating monthly subscription apps with native Shopify Functions: tiered volume pricing, bundle builders, pre-order queues, and automated B2B customer gating.
Checkout Extensibility & 1-Click Upsells
Shopify Plus checkout UI extensions, slide-out cart drawers, post-purchase 1-click offers, and Klaviyo/GA4 e-commerce data layer tracking.
US Multi-State Tax & Carrier Shipping Sync
Configuring Shopify Tax and Avalara AvaTax for US state nexus, paired with live dynamic shipping rates for UPS, FedEx, and USPS.
Shopify Markets US & Cross-Border Selling
Multi-currency pricing, localized language subfolders, automatic IP geolocation redirects, and duties-paid (DDP) international checkout.
Headless Hydrogen & Storefront API
Decoupled headless storefronts utilizing Shopify Hydrogen and Oxygen or Next.js for high-SKU brands demanding sub-second global speeds.
Why American D2C Brands Upgrade to Custom Shopify Code
Every 100ms of mobile checkout latency burns hard-earned marketing dollars. Here is how custom code scales revenue.
Eliminate $500+/Mo in Fragile Subscription Apps
We replace bloated monthly third-party apps for bundles, discounts, and custom fields with native Shopify Functions and metaobjects.
Sub-1.2s Mobile Largest Contentful Paint (LCP)
Handcrafted JSON templates ensure your TikTok, Meta, and Google ad traffic hits a lightning-fast, high-converting checkout.
US Multi-State Economic Nexus Compliance
Automated sales tax collection across all 50 states via Shopify Tax and Avalara, paired with real-time UPS/FedEx/USPS carrier rates.
Direct Senior Engineer Partnership
Direct collaboration with lead software architect Mr Umer Malik under Delaware mutual NDA and 100% intellectual property transfer.
Phased Delivery Roadmap & How This Project Runs
Structured from initial discovery call to production deployment and 100% intellectual property transfer.
Phase 01: Theme & App Stack Technical Audit
Thorough audit of your existing store, identifying app bloat, speed bottlenecks, and conversion leaks with fixed milestone pricing in USD.
Phase 02: Custom Liquid OS 2.0 Staging Theme
Building the bespoke theme on an unpublished preview within your Shopify admin, allowing your live store to run uninterrupted.
Phase 03: Native Shopify Functions & Checkout Tuning
Writing custom discount rules, bundle drawers, carrier integrations, and Klaviyo/GA4 e-commerce data layers.
Phase 04: 1-Click Publishing & Post-Launch Support
Publishing the new theme with zero downtime, team walkthrough session, and 30-day comprehensive technical warranty.
US Founder Frequently Asked Questions
Clear answers on US business hours alignment, USD milestone billing, and Delaware mutual NDA protection.
Can you build custom Shopify functionality without monthly subscription apps? ▼
How do you configure US state sales tax and shipping carrier integrations? ▼
Do you build headless Shopify storefronts using Next.js or Hydrogen? ▼
Will my store experience any downtime during development or launch? ▼
How do you optimize Shopify mobile conversion rates? ▼
Who owns the custom Liquid code and theme assets? ▼
Great dreams deserve craftsmanship, not compromises. Let’s build yours.
US METROS & STATES ACTIVELY SERVED
© 2026 UMER XPERT. SERVING THE UNITED STATES — COAST TO COAST. All rights reserved. Contracts executed under Delaware mutual NDA.