Work we back with numbers.

13 published case studies cover migrations, relaunches and system integrations on Shopify Plus, several of them across borders and currencies. Each one states the starting point, the work and the result, with the figures of that client.

OXID & Shopware → Shopify PlusTwo stores consolidated on one international commerce platform6 mo.Project duration~3×Faster time-to-market-50%Cost reductionRead case study
Retail & marketplaces → Shopify Plus D2CA dedicated D2C channel for Europe and Switzerland6 weeksGo-live+120%RevenueEU & CHMarkets liveRead case study
Shopware 6 → Shopify PlusWith advisory journeys and a custom app for the partner network17,200Customer profiles400+Affiliate partnersDE & ENLanguagesRead case study
Shopware → Shopify PlusWith an engraving configurator, ERP and European markets8 weeksGo-live+45%Conversion RateEUDACH, FR & UK focusRead case study
Shopify Plus relaunch for B2C & B2BTwo sales channels in one shared setup2 monthsProject durationB2C & B2BOne shared setupFigmaPage frameworksRead case study
Magento → Shopify PlusWith customer history and SiroccoClub structures12 weeksProject duration+25%Conversion Rate40,000+Customer recordsRead case study
Shopware → Shopify PlusWith a gift configurator, bundles and JTL50 daysGo-live+33%Conversion Rate+29%AOVRead case study
Plentymarkets → Shopify PlusWith Plentymarkets as the primary PIM3 monthsProject duration+35%Conversion Rate+20%AOV from bundlesRead case study
PrestaShop → Shopify PlusWith ERP and marketplace integrations40,000+Products147,753SEO redirects3MarketplacesRead case study

View all projects

Complex Shopify projects. Controlled through go-live.

A market launch rarely fails because of design. It fails on the data model, on redirects, on integrations and on a missing sign-off. We switch only when each of these points has been tested and approved.

NICCOS team working on a Shopify project

One team owns your project from the first assessment through post-launch care. Groundies received more than 100 US orders within 3 days of launch.

See how we work

01
Audit, business case & architecture
We map systems, data flows and revenue risks. Scope and target architecture are set after that, not before.
Control pointSystem map, prioritized risks and a dependable project scope
02
Design, development & integrations
Design system, storefront and integrations come from one architecture. Every dependency has a named owner.
Control pointValidated journeys, integration logic and an approved delivery backlog
03
Data migration & redirects
We map product, customer and order data, run a trial import and check the result. Every legacy URL gets a target before the switch.
Control pointMigration rehearsal, data sign-off and a complete redirect plan
04
QA, cutover & rollback plan
We test purchase journeys, payments, markets and integrations. Sequence, ownership and the way back are documented for the switch.
Control pointAcceptance record, cutover checklist and a clear go/no-go decision
05
Go-live, care & optimization
After launch we monitor the store and resolve issues by priority. Real usage data shapes the plan for the next steps.
Control pointIssue log, named owners and a prioritized backlog

“That was the calmest launch we’ve ever had.”

Carolin Kampik

Director Data & Technology · Groundies

Read the case study ↗

We tell you what comes first.

Tell us about your store and your plan: migration, relaunch or market entry. We tell you where the biggest risk sits, what comes first and whether we are the right agency for it.

Your store keeps selling while we rebuild it.

We migrate and extend live stores on Shopify Plus. Revenue, data and operations stay under control. Gusti Leder moved more than 1,000 products from Shopware and went live in under 8 weeks.

See how we deliver

01Replatforming with a rollback planArchitecture, data migration, redirects, checkout and cutover sit in one plan that we own.System auditRedirect mapRollback plan 02Storefronts built for changeStorefronts in Liquid, Hydrogen and React. Your team edits content in every language, and releases stay maintainable.Design systemComponent architectureCore Web Vitals 03Integrations your warehouse relies onOrders arrive in the ERP and stock is correct in the store. For ERP, PIM, OMS and CRM it is defined which system owns which data.Data contractsError handlingMonitoring 04Growth on reliable dataTracking and tests show which change works. BlumeIdeal reached +33% conversion rate and +29% AOV after its migration.Event schemaExperiment backlogRelease QA

One system for D2C, B2B and retail.

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DTC

We migrate, build and optimize stores for brands that sell directly to consumers. MYCR7 launched its own D2C channel for the EU and Switzerland in 6 weeks.

B2B

Business customers get their own price lists, accounts and ordering paths on Shopify Plus. Smilodox runs B2C and B2B in one setup.

RETAIL / POS

With Shopify POS, online store, retail, inventory and customer data run in one system. Blankroast has been selling with Shopify POS in its own roastery since December 2025.

Brands we build for on Shopify.

Groundies, MYCR7 and Gusti Leder are three of thirteen projects we have published with starting point, delivery and result.

A closer look at NICCOS.

Projects, client campaigns and everyday work in the team. We show more of it on Instagram.

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Questions before you start.

Which brands does NICCOS work with as a Shopify Plus agency?

D2C and B2B brands that sell in Germany, Austria and Switzerland, or expand from there into other markets. Groundies launched in the US and then internationally on one Shopify Plus codebase. MYCR7 runs mycr7.eu and mycr7.ch. Sirocco and Kanela are Swiss brands.

What does a store need to sell in Germany, Austria and Switzerland?

Local languages, euro and Swiss franc pricing, the payment methods buyers there expect and legally compliant price display. German price indication law (PAngV) has its own rules for showing discounts. We built the app Best Price Indicator (PAngV) for the Shopify App Store to cover that requirement.

Should we run one store or a separate store per market?

It depends on how different your catalog, pricing and operations are per market. Shopify Markets covers many cases in one store. Separate stores make sense when assortment or fulfilment differ strongly. Groundies moved from two platforms to one central codebase. MYCR7 runs two storefronts with multi-currency.

Which platforms do you migrate to Shopify Plus?

Shopware, Magento, OXID, Plentymarkets and Prestashop are each documented in a published case study, and we migrate from WooCommerce as well. Gusti Leder and BlumeIdeal came from Shopware, Sirocco from Magento, Hairshop Pro from Plentymarkets, Kanela from Prestashop, Groundies from OXID and Shopware at the same time.

How do you protect organic traffic during a migration?

Every legacy URL gets a target before go-live, and we verify after the switch that the redirect works. Nobody can honestly guarantee rankings. What we own is the mapping and the check. For Kanela we created 147,753 legacy URL mappings across four language versions and read them back.

How long does a Shopify Plus migration take?

It depends on data volume, integrations and markets. We do not quote a flat number. These are the timelines from our projects: MYCR7 went live after 6 weeks, Gusti Leder after 8 weeks, BlumeIdeal after 50 days, Sirocco after 12 weeks. Groundies took 6 months because two platforms were merged and markets launched in phases.

What does a Shopify Plus project cost?

Four things drive the price: volume and quality of your data, number of integrations, number of markets and the share of custom development. We do not publish a price list because it would be wrong for any specific project. After the free assessment you receive a quote with a fixed scope.

Do you connect the ERP systems used in the DACH region?

Yes. We own the result: orders arrive in the ERP and stock levels in the store are correct. BlumeIdeal runs on JTL Worker Cloud after its move. Kanela connects Pixi and three marketplaces. Gusti Leder went live with an ERP integration and Shopify Markets.

How can we verify NICCOS before we talk?

Through sources we do not control. The Shopify Partner Directory lists NICCOS as a Shopify Plus Partner since April 2022 with 19 reviews and a 5.0 rating. On our own site you find 13 published case studies that name the client, the starting point and the result.

When is NICCOS not the right agency?

When you plan to stay on Shopware, Magento or another platform. We work with Shopify and Shopify Plus only. If you just need a ready-made theme installed, a freelancer is the better choice.

Shopify agency in Germany for migration and growth