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I build Shopify stores that convert

Custom development, conversion optimization, and performance engineering for e-commerce brands that want to turn traffic into revenue.

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0%
Avg. Conversion Lift
$0M+
Revenue Generated
0+
Stores Optimized
analytics.your-website.com/dashboard
Revenue Overview Last 12 months
Conversion Rate
7.2% +380%
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
1.8s
Load Time
98
Lighthouse
$3K+
Monthly Saved
1.5% → 7.2%
Conversion Rate
+380% growth
$3K+/mo
App Costs Saved
10+ apps replaced
Trusted by
How I Help You Grow

Solid work, honest results

I don't promise miracles. I analyze your specific situation, identify what's actually fixable, and do the work properly.

My approach: no hype, just work
Every store is different. What works for a supplement brand won't work for a fashion label. I start by understanding your products, your customers, and your actual problems — then I fix what matters most. Some stores see dramatic improvements, others see steady gains. I'll be upfront about what's realistic for your situation.
1 Convert
2 Speed Up
3 Rebuild
4 Own It
Where most stores have room to grow

Conversion Rate Optimization

You're paying for traffic. Let's make sure more of it converts. I find where visitors drop off and fix the friction points.

Common Problems
Visitors browse but don't buy
High cart abandonment
Guessing what to fix
Clunky mobile experience
What I Do
01
Deep Funnel Audit
Heatmaps, recordings, analytics to find drop-off points
02
Prioritized Fixes
Tackle biggest issues first
03
Implement & Test
Careful changes with measurement
04
Measure & Iterate
Ongoing refinement based on data
Realistic Outcomes

Results vary, but with solid CRO work you can typically expect:

15-40% conversion lift — depends on existing issues
Lower cart abandonment — by removing friction
Better mobile UX — where most traffic is
Clear data — know what's working
What You Get
Audit report
Checkout fixes
PDP improvements
Mobile UX

Let's look at your store. Free initial audit to find what's worth fixing.

Request Free Audit
Often the fastest ROI

Performance Engineering

Slow stores lose customers. I audit your stack and fix what's actually causing the slowdown.

Common Problems
4-6 second load times on mobile
Failing Core Web Vitals
Too many apps adding bloat
Lighthouse scores in the red
What I Do
01
Performance Audit
Find the real bottlenecks
02
Third-Party Cleanup
Remove or defer blocking scripts
03
Asset Optimization
Images, fonts, CSS/JS
04
Core Web Vitals
LCP, CLS, INP — get them green
Realistic Outcomes

Performance gains depend on how bad things are, but typically:

2-3 second load times — achievable for most stores
Lighthouse 85-95 — green scores
Passing Core Web Vitals — helps SEO
Better UX — less frustration
What You Get
Performance report
Script optimization
Asset optimization
CWV fixes

Speed improvements usually show results within a few weeks.

Get Speed Audit
A foundation for everything else

Custom Theme Development

Your store shouldn't look like everyone else's. Built from scratch, optimized for your products.

Common Problems
Generic theme like competitors
Page builders making things slow
Hard to customize safely
Unknown accessibility issues
What I Do
01
Discovery
Understand your brand and customers
02
Architecture
Plan sections and content structure
03
Build
Clean code, optimized from line one
04
Launch & Train
Go live with documentation
What You End Up With

A custom theme built for your specific needs:

Fast by default — Lighthouse 85-95 out of the box
Accessible — WCAG compliant
Maintainable — clean code you can work with
Flexible — customize in the editor
What You Get
Shopify 2.0 theme
Flexible sections
Documentation
Team walkthrough

Custom themes are a bigger investment, but they pay off every day.

Discuss Your Project
Stop renting, start owning

Custom App Development

Tired of monthly fees for apps that barely work? I build exactly what you need — you own it forever.

Common Problems
$500-2,000+/month in app fees
Apps that almost do what you need
Each app slowing things down
No control over features
What I Do
01
App Audit
What you use vs. what you pay for
02
Consolidation Plan
Design solution to replace multiple apps
03
Build & Integrate
Exactly the features you need
04
Migration
Smooth transition, no data loss
Realistic Outcomes

ROI depends on current app spend, but typically:

$500-1,500/month saved — replacing 3-5 apps
Faster store — fewer third-party scripts
Exact functionality — nothing extra
You own it — no monthly fees
What You Get
Custom app
Full source code
Admin UI
Documentation

One-time investment that pays for itself in 6-12 months.

Get App Audit
Proof, Not Promises

Real stores, real results

Every project is different. Here's what happened when we applied the right fixes to the right problems.

Supplements / DTC 2023–Present

From patchwork apps to unified system

Multi-million dollar supplement brand drowning in app fees and slow checkout. Rebuilt from the ground up.

5.2s
1.8s
Load Time
$2.1K
$0/mo
App Costs
The Problem

KŌS was running 12+ Shopify apps costing over $2,100/month. Checkout was slow, the theme was a Frankenstein of patches, and every change risked breaking something. Their dev agency charged premium rates but delivered band-aid fixes.

What I Did
  • Built custom theme from scratch with all functionality baked in
  • Replaced 10 apps with native code (reviews, bundles, subscriptions UI, upsells)
  • Rebuilt checkout with custom extensions
  • Implemented proper caching and lazy loading
Results After 6 Months
65% Faster page loads
$25K+ Annual app savings
23% Checkout completion ↑
1 Developer needed
Client Note
"Alex basically became our entire dev team. What used to take our agency weeks, he does in days." — Operations Lead, KŌS
Apparel / B2C 2024

New brand, built right from day one

Streetwear brand launching with zero technical debt. Custom theme designed for their specific product types and customer journey.

—
94
Lighthouse
—
4.2%
Conv. Rate
The Situation

New streetwear brand with strong visual identity but no Shopify experience. They'd been quoted $15-25K by agencies for a "premium" theme. They wanted something fast, unique, and maintainable.

What I Did
  • Custom Shopify 2.0 theme built around their lookbook-style photography
  • Size guide system with fit predictor
  • Quick-view and fast add-to-cart for mobile
  • Integrated with their fulfillment system
Launch Results
94 Lighthouse score
4.2% Conversion rate
1.9s Mobile load time
0 Monthly app fees
Client Note
"We got a better result for a third of what agencies quoted. And we actually understand how to use it." — Founder, FLAG.CO
Health & Wellness 2024

Conversion emergency turned around

Established brand with tanking mobile conversions after a botched theme update. Needed fast, surgical fixes.

1.1%
2.8%
Mobile Conv.
67%
41%
Cart Abandon
The Problem

After a theme "upgrade" by another developer, mobile conversion dropped 40% overnight. The new theme looked nice but was broken in ways that weren't obvious — slow checkout, broken add-to-cart on certain products, confusing mobile navigation.

What I Did
  • Emergency audit to find all breaking issues
  • Fixed checkout flow (was requiring unnecessary steps)
  • Rebuilt mobile product pages with sticky add-to-cart
  • Optimized images and removed render-blocking scripts
Results After 30 Days
+155% Mobile conversion
-39% Cart abandonment
2.1s Mobile load time
$47K Revenue recovered/mo
Client Note
"Alex found issues in two hours that the original dev couldn't find in two weeks. We're back to where we should be." — E-commerce Manager

Every store has different problems. Let's figure out what's actually worth fixing in yours.

Get Free Store Audit
No pitch deck. I'll record a 10-minute video walking through your store with specific recommendations.
Who's Behind This

One developer, not an agency

I'm Alex — a full-stack developer with 15 years of experience, the last several focused entirely on Shopify. I work directly with brands, no account managers or junior devs in between.

When you hire me, you get me. I answer emails, I write the code, I fix the bugs. That's it.

Based in Bucharest
Romania, CET timezone. 6-9 hours ahead of US clients — I often deliver overnight what you'd wait a week for locally.
Deep, not wide
I take 2-3 clients at a time. You're not ticket #847 in a queue. When something breaks, I'm already looking at it.
I write code, not proposals
No 40-page SOWs. We talk, I scope it, I quote it, I build it. If something's unclear, I ask — I don't assume and bill you for the mistake.
AH
Alexandru Herăscu
Shopify Developer
Available
Core Stack
Shopify 2.0 Liquid JavaScript Node.js
Also
React Checkout Extensions Shopify APIs Deno
Experience 15 years
2010 Web Dev E-commerce Shopify Focus Now
Typical response: < 4 hours
Good to know
I don't do design from scratch — bring a designer or use my preferred partners
I don't take rushed jobs that need to ship in 48 hours
I do give honest estimates, even if they're not what you want to hear
I do tell you when something isn't worth building
Let's Talk

Got a project in mind?

Choose what works best for you — book a call directly or send me a message.

Response time
Usually within 4 hours
Timezone
CET (Bucharest) — 6-9h ahead of US
Prefer email?
contact@alexandruherascu.com
Book a Call
30-minute intro call. I'll review your store beforehand.
Send a Message
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Your info stays between us. No spam, no selling your email.

Message received!

I'll review your store and get back to you within a few hours. Check your inbox (and spam folder, just in case).