ConversionWise combines 13 years of ecommerce expertise with Optimo, our proprietary AI to identify your highest-impact growth lever and fix it.
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From custom theme work to ongoing dev support. All in-house. All senior. All shipped for performance.
A small selection of the custom Shopify features we've designed, built, and shipped for clients.
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We discuss what you need, audit your current setup, and define the scope honestly. A single custom feature might take a week. A full theme build takes longer. We tell you what's realistic.
For larger builds, we design in Figma first and share files with you. For smaller feature work, we go straight to a clear technical spec. Either way, you approve before a line of code is written.
Senior in-house developers build in native Liquid. Clean, fast, modular code. Every feature hand-coded, tested, and optimised for performance.
Cross-device, cross-browser testing. Performance audits. Every flow tested before anything goes live. If you want ongoing dev support afterwards, we roll into a retainer.
Dev work shipped by senior humans. Not juniors, not offshore contractors, not AI-generated code.
Stefan leads the in-house dev team out of Serbia. 12+ years building on Shopify and Shopify Plus, with deep specialism in performance refactors, checkout extensibility, and custom feature engineering for high-volume DTC brands.
Every dev engagement is led by Stefan and shipped by our in-house senior developers. No junior handoffs, no offshoring, no "we'll figure it out as we go."
Our developers sit inside the same agency as our CRO strategists, designers, and analysts. Which means every feature they build is informed by the conversion data our wider team lives in - and every line of code is performance-tested before it ships.
"Their development team are consistently responsive, solution-focused, and quick to act"
We don't spread thin across five platforms. Shopify is where most of our work happens, which is why we're good at it.
We're not an AI-generated dev shop.
Every line of code is written by a senior human developer.
But what we build is informed by Optimo, our proprietary AI system trained on 13 years of conversion data across 4,000+ brands. Optimo surfaces the custom features, mechanics, and performance patterns that have historically driven revenue. Our developers then build them properly.
Our dev service isn't for everyone. Here's who it's built for.
Depends entirely on scope. A single custom feature usually ships in 1–2 weeks. A full theme build takes 6–12 weeks. We give you an honest timeline on your discovery call, not a padded one.
Both. You can commission a discrete dev project (e.g. a custom bundle builder, a performance refactor) or put us on retainer for ongoing development work, monthly feature builds, bug fixes, performance tuning, and continuous improvements.
Most of our dev work is Shopify and Shopify Plus. We can work with other platforms, but we don't lead with it, our expertise and speed are strongest on Shopify, which is where we focus.
Yes. If your team's workflow is built around a page builder, we'll work inside it. For custom builds from scratch, we usually recommend native Liquid, faster, cleaner, and more performant.
Yes. We can refactor, optimise, or extend any theme, including premium themes like Dawn, Horizon, or custom themes you've built or bought. Often the fastest route to performance lift is refactoring the theme you already have.
Our in-house senior developers, led by Stefan Zivanov, our Head of Development. No juniors, no offshore contractors, no AI-generated code shipped to production.
Book a free 30-minute discovery call. We'll review your current Shopify setup, identify the biggest opportunities, and outline what a custom build would look like.
