Available for New Clients

Build, Fix & Scale Your Shopify Store — I Handle It All

Whether you're starting from scratch or improving an existing store — I handle everything. Store setup, theme customization, conversion optimization, and high-converting design assets. Every decision is driven by measurable business results.

⭐ Trusted by 60+ Shopify store owners across 10+ countries
Rejaul Karim — Shopify Developer
Speed Optimized
Core Web Vitals ✓
+40% Conversion
Average client result
Rejaul Karim at work

I Help Businesses Launch, Fix, and Scale Profitable Shopify Stores

I don't just write code — I solve business problems. Whether a client needs a brand-new store, a broken feature fixed, a leaky funnel patched, or high-converting design assets built, I handle the full picture.

With 2.5+ years specializing in Shopify, I've worked with new founders, established brands, and fast-growing DTC companies. The goal is always the same: more revenue from every visitor.

Full-Service Shopify Expert
CRO-First Mindset
Custom Development
Design & Performance Focus
Proven Track Record

4 Services. One Expert. Every Result You Need.

From first store to scaling brand — I cover every stage of your Shopify journey with one clear goal: more revenue.

🏪
Shopify Store Setup
Go from idea to a fully ready-to-sell store.
Perfect for new business owners. I set up your entire Shopify store — theme, products, payments, shipping, and apps — so you can start selling from day one.
  • Full store setup from scratch
  • Theme customization & branding
  • Payment, shipping & app configuration
  • Mobile-first, conversion-ready UX
✓ Helped 20+ new stores launch successfully
🔧
Store Fixes & Customization
Fix what's broken. Add what's missing.
Already have a store? I fix bugs, improve design, add missing features, and customize your theme with Liquid — without breaking what already works.
  • Bug fixing & theme troubleshooting
  • Design changes & layout improvements
  • Custom Shopify Liquid development
  • Feature additions & app integrations
✓ Fixed 100+ bugs and features across 30+ stores
📈
Conversion Rate Optimization
Make more money from your existing traffic.
Your traffic isn't the problem — your store is. I audit your funnel, identify what's killing conversions, and make data-driven changes that increase revenue without more ad spend.
  • Store audit & funnel analysis
  • Product & landing page redesigns
  • Cart, checkout & UX optimization
  • Speed improvements & Core Web Vitals
✓ Average +40% conversion lift across all CRO projects
🎨
High-Converting Design Assets
Design that sells — not just looks good.
Need standalone design work? I create high-converting landing pages, product pages, PDF catalogs, lead magnets, and brand visuals built specifically to drive action.
  • Custom landing pages & sales pages
  • PDF catalogs & lead magnets
  • Product page templates
  • Brand visuals & promotional assets
✓ Delivered 50+ landing pages and design assets

Real Projects. Real Results.

60+ projects delivered — here's a selection across store setup, design, and custom development.

StyleHaus Fashion Store
Store Setup
StyleHaus — Fashion Store
+42% Conversion Rate
View Live →
GlowLab Beauty Brand
Custom Feature
GlowLab — Beauty Brand
2x Subscription Revenue
View Live →
NestCo Home Decor
Store Setup
NestCo — Home & Decor
12K+ Products Migrated
View Live →
PureFlow Wellness Landing Page
Landing Page
PureFlow — Wellness Brand
+38% Lead Conversion
View Live →
Luxe Skincare Product Page
PDP Design
Luxe Skincare — Product Page
+29% Add-to-Cart Rate
View Live →
Silky Planet Product Page
PDP Design
Silky Planet — Product Page
High-Converting Pdp
View Live →
Silky Planet Product Page
PDP Design
valyrian designs — Product Page
High-Converting Pdp
View Live →
FitGear Pro Custom Feature
Custom Feature
FitGear Pro — Fitness Store
-45% Cart Abandonment
View Live →

Results That Speak for Themselves

Real numbers from real client projects — not estimates, not pulled from the internet.

+40%
Average Conversion Rate Increase
More visitors turning into paying customers
+35%
Average AOV Growth
Higher cart values through smart UX design
-60%
Page Load Time Reduction
Faster stores mean fewer abandoned visits
98%
Client Satisfaction Rate
Clients who rehire or refer new business

What Clients Say After Working With Me

"Our load time dropped from 6 seconds to under 2 — and our conversion rate nearly doubled in the first month. Rejaul doesn't just build stores, he builds revenue."

James Mitchell
James Mitchell
Founder, StyleHaus — Fashion Brand

"The subscription flow Rejaul built increased our recurring revenue by 2x in 90 days. He understood our business goals, not just the tech. Delivered ahead of schedule."

Sarah Chen
Sarah Chen
CEO, GlowLab Beauty — $2M+ ARR Brand

"12,000+ products migrated from WooCommerce — zero data loss, SEO fully preserved, and the new store is dramatically faster. The ROI was immediate. Only Shopify developer I'll ever hire."

Daniel Osei
Daniel Osei
Director, NestCo Decor — Home & Decor Brand
Currently accepting a limited number of new clients

Let's Grow Your Shopify Business

Whether you need a brand-new store, a full redesign, or a conversion boost — book a free 30-minute strategy call. I'll give you a clear plan and honest advice, no strings attached.

Book a Free Strategy Call Book a Free Call
No pressure. No pitch. Just a clear plan for your store.

Start a Conversation

Tell me about your store, your goals, and where you're stuck. I'll get back to you within 24 hours with a clear next step.

WhatsApp
Location
Available Worldwide · Remote
I reply within 24 hours