Shopify Stores Engineered to Scale
From custom theme builds to headless storefronts and enterprise Shopify Plus implementations — we build stores that hold up under real traffic, not just on launch day.
What We Do
Our Shopify Services
Every service is engineered for performance and reliability — not just to look good in a demo.
Shopify Store Development
Custom Shopify themes and storefronts built for speed, usability, and brand identity. From scratch or redesign — we handle it all.
Headless Commerce
Blazing-fast headless storefronts on Next.js with Shopify Storefront API or Hydrogen — 98+ Lighthouse scores, full design freedom.
Shopify Plus
Enterprise-grade Shopify Plus implementations — custom checkout extensions, B2B portals, multistore setups, and Shopify Flow automation.
Performance Engineering
Page speed audits, Core Web Vitals optimization, and Lighthouse-perfect builds. We treat load time as a feature, not an afterthought.
Checkout & Extensions
Custom checkout customization and post-purchase flows built with Shopify's Checkout UI Extensions and Shopify Functions.
App & Integrations
Custom Shopify app development and third-party integrations — ERP, 3PL, loyalty systems, subscriptions, and payment providers.
Proof
Real Stores, Real Results
How It Works
Our Shopify Growth Process
Technical Audit
We audit your existing store — speed, tech stack, theme code quality, and integration gaps.
Architecture & Design
Build a custom technical roadmap: theme vs. headless decision, data model, and integration plan.
Build & Launch
Development sprints with staging previews. QA, performance testing, then a zero-downtime launch.
Support & Iterate
Post-launch monitoring, performance tuning, and feature iterations — every sprint.
Why SJ Dev Technologies
Shopify Specialists. Not Generalists.
We don't build WordPress sites on Tuesday and Shopify stores on Wednesday. Shopify is all we do — which means deeper expertise, faster delivery, and better results for your store.
Shopify-Specialist Team
We work exclusively in the Shopify ecosystem — no generalists. Every engineer and strategist lives and breathes Shopify.
Engineering-First Approach
Every decision is backed by clean code and sound architecture — not just what looks good in a demo.
Full Source Ownership
You get complete ownership of the codebase once the project is paid — no proprietary lock-in, no black-box themes.
Transparent Progress
Live project dashboards, sprint updates, and staging previews — you always see what's being built, never a black box.
Fast Turnaround
We move at startup speed. Most store builds launch in 4–8 weeks. Performance fixes shipped within days, not months.
Flexible Engagements
Fixed-price builds or month-to-month engineering retainers — whichever fits your roadmap, no long-term lock-in.
Get Started
Let's Build Your Store
Tell us about your store and goals. We'll respond within 24 hours with a tailored technical plan — no commitment required.