Solving Shopify's “can't be done” with ideas and engineering

“It's not a standard feature.” “No app supports it.” That's where most requests get abandoned. Popaz is a development company specializing in Shopify — we take it from there, with design and code.

WHO WE ARE

We don't just build what we're told to build.

Popaz honed its craft inside some of Japan's top Shopify partners, taking part in more than 140 projects and building over 40 stores from scratch.

Our work is not to implement a specification exactly as handed to us.
We look at the business and how it is run, frame the real problem, choose the technology it needs, and build it through to the point where people actually use it.
From framing requirements to design, implementation and operations — wherever Shopify engineering is needed, we stay to the end and take responsibility for it.

140+Projects to date

40+Built from scratch

More about us

WHAT WE DO

What we do

Shopify store builds and rebuilds

From planning your site structure to launch. If you already have design files, we can join for implementation only.

Public app selection, setup and surrounding customization

Selecting and configuring the right apps for your requirements, then building the parts they can't do off the shelf. This is our most frequent type of work.

Custom app development and system integration

We connect inventory, order, and customer data with back-office systems and other sales channels — removing manual re-entry and mismatched numbers.

Migration from other platforms, and store takeovers

Moving live stores without stopping them, and taking over stores built by other vendors — even when no documentation is left.

See our services

RESULTS

Results in numbers

Cut sales costs from hundreds of thousands of yen to infrastructure fees alone

A sales flow that depended on a paid app's usage-based fees was moved to a dedicated custom app — eliminating per-sale charges and leaving only the cost of running the infrastructure.

Improved CVR by 61% through theme fixes

We fixed the defects in a store taken over from another vendor and streamlined the path to purchase — all while the site stayed live.

A limited release with 20,000 concurrent users and 460,000 hits — zero downtime

Load-heavy processing was designed to run outside Shopify and distributed. The store never went down during the sales period.

The 11 principles behind these results

FAQ

Yes. You can come to us before anything about what or how to build is decided.

We'll hear what you want to achieve and what's troubling you now, and start by deciding together whether standard features are enough, whether a public app will do, or whether it needs to be custom-built.
See how we decide

As a guide: two to three months for a store build, or as little as two weeks for a small build where requirements and materials are ready. A small custom app takes about two weeks; an external integration about a month, if the necessary documentation is in order.

That said, what sways the timeline isn't the development itself — it's preparing materials, reviewing designs, aligning internally, and waiting on replies from outside vendors. Once those are predictable, so is the overall schedule.
From first conversation to launch

We don't keep a flat price list.

Even for the same “build a store,” the work varies widely with the number of screens, the number of products, the data to migrate, external integrations, and how much of the design you leave to us. We hear your requirements and estimate individually.

Yes. We take on post-launch changes, feature additions and ongoing technical advice.

There are two shapes: reserving a set amount of time each month, or engaging us individually as the need arises. Which suits depends on how often you update and how much you handle in-house.
See how the contracts differ

If we're in a position to respond, we do our best to. The typical cases: the store won't display, purchases fail, order processing is misbehaving.

We first establish the extent of the impact, then start with whatever is blocking purchases or operations. We sometimes work nights and weekends, but we don't promise 24-hour coverage or a recovery deadline.

On the monthly plan, this is covered within your contracted hours. Without a contract, we quote the investigation and recovery as a one-off engagement. If a few minutes of checking can answer it, there may be no charge at all.

Yes. Conversations before a deal is won are not unusual.

We verify that the requirements hold up on Shopify, and return a technical architecture with a rough estimate. Some engagements are solely to check pitch decks, or estimates about to go out, for technical overreach.
For agencies

See all questions

TECH INSIGHTS