Your agency for PrestaShop, Shopware, Shopify and online marketing.
We develop and optimise high-performing online stores, combining sound technology, effective marketing and a focus on lasting results. We support mid-sized businesses, growing online retailers and ambitious start-ups with practical advice, a clear strategy and real commitment.
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250+ successful e-commerce projects in Germany, Austria and Switzerland
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Specialising in online stores since 2010
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Personal support – fast and direct
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Online store development, support and optimisation
Which e-commerce platform can we help you with?
A flexible platform that scales with small and medium-sized businesses
Explore PrestaShop
A flexible platform with strong APIs for established mid-sized businesses
Explore Shopware
A fast, user-friendly platform for start-ups and growing businesses
Explore ShopifyClient projects – our full commitment to every one.
Höllberg Brennerei
- Industry
- Food and drink
- Customer group
- B2C
- Markets
- DE
- System
- PrestaShop 8
Höllberg, a traditional distillery in Oberkirch known for its premium spirits, has relied on our expertise since 2023. We initially supported its existing Shopware 5 store, including updates through Savefive. Rising costs for Shopware 6 subscriptions and module licences led to a deliberate move to PrestaShop Classic 8. We handled the entire migration and faithfully recreated the existing design to retain its familiar appearance. We improved the checkout using established conversion principles and retained the connections to Google Shopping and Amazon. Protecting the store’s strong organic search visibility was a particular priority.
IDIMEX AG
- Industry
- Furniture
- Customer group
- B2C
- Markets
- CH, DE, FR
- System
- PrestaShop 8.2
Swiss online retailer IDIMEX AG has relied on our e-commerce expertise since 2024. We supported its successful move from a store built into its ERP system to PrestaShop. Today, we support three individually configured B2C stores for Switzerland, Germany and France. Integration with the company’s own ERP system keeps processes efficient. Working closely with IDIMEX’s development and marketing teams, we continuously develop new features and improvements.
Grill-Zentrum GmbH
- Industry
- Barbecues, food and drink
- Customer group
- B2C
- Markets
- DE
- System
- JTL-Shop, JTL-WaWi, JTL-WMS
Grill-Zentrum has been a loyal client since 2010. The specialist barbecue retailer runs a physical store and a well-organised online store. Dedicated landing pages regularly promote events, workshops and barbecue classes. Its JTL-Shop is closely integrated with JTL-Wawi and JTL-WMS. We have supported Grill-Zentrum as its digital partner for more than ten years, handling updates, Google Ads and Shopping campaigns, and ongoing SEO. The store also connects to marketplaces such as Amazon.
Wendel Verlag GmbH
- Industry
- Software and publishing
- Customer group
- B2B
- Markets
- DE
- System
- PrestaShop 8
Wendel Verlag provides modern digital solutions for driving schools. We have helped develop its online store since 2024. As part of a major upgrade, we successfully migrated the existing PrestaShop 1.6 store to version 8.1. One particular challenge was a custom registration process that distinguishes driving instructors from learners when an account is created. We also implemented a tailored checkout. We designed and integrated all these features alongside the modern store design.
B+M Holzwelt GmbH
- Industry
- Building supplies
- Customer group
- B2C/B2B
- Markets
- DE
- System
- PrestaShop 8
B+M Holzwelt GmbH in Achern has worked with our agency since 2024. It needed a reliable partner to support its existing WordPress website and build a new online store for insulation materials, and chose us on a recommendation. We now provide coordinated support, from monthly website and store updates to accessibility work and targeted marketing.
More than 200 online retailers trust sjmedia.
„Requests are implemented quickly – they always find a way! Great service!“
„A good impression from the start, which proved well founded! Very knowledgeable, quick responses, honest advice, fair and transparent billing, and fantastic customer service.“
„Five stars – nothing more needs to be said. We have always received very knowledgeable and friendly support. We wholeheartedly recommend sjmedia!“
„We came to sjmedia through a recommendation and have now been working together for several years. If you need a new agency for your online store or e-commerce, this is the right place.“
„After a long time with WooCommerce, we decided in 2026 to take the next step to a more professional shop system. After a short search, we came across sjmedia GmbH. Mr Schmid's advice on the right system was clear and easy to follow, every question was answered competently, and we decided to migrate to PrestaShop – a system we hadn't even had on our radar until then. The demo and the references, especially in our industry, convinced us. The whole project – the migration, carrying over the functions from WooCommerce, optimising a number of processes and a successful SEO transition without any loss of Google rankings – went exactly as it should. Minor corrections were made promptly. Looking back after six months of working with Presta every day, it was the right decision. The backend is much easier to handle, performance is better, and the connection to Google for Ads / Shopping, email marketing and more is very good. Especially with our future growth plans and the current ERP integration in mind, we are more than happy with the new system – no doubt also thanks to the first-class support from sjmedia GmbH: always available, always a solution. That's how it should be!“
„We migrated our store from Gambio to PrestaShop with sjmedia and are very happy with the result. The collaboration was structured, understandable and reliable. Questions were answered quickly and individual requirements implemented properly. We particularly appreciated that the technical migration worked well and that the team also considered the customer journey, performance and SEO. In our view, anyone looking for an agency for a Gambio-to-PrestaShop migration is in very good hands with sjmedia.“
„The migration from Shopware 5 to PrestaShop went surprisingly smoothly. We were particularly impressed by the structured approach and clear communication. Mr Nehrlich was always accessible as project manager, and tasks were handled systematically through the project management tool. We could continue working without major disruption to day-to-day business.“
„Praise for Johann: setting up the Klaviyo flows has enormously improved our email marketing. Automations now run at exactly the right time and fit our Magento store perfectly. This has significantly improved customer retention. ⭐️⭐️⭐️⭐️⭐️“
Our core e-commerce services.
We look at the whole store, from its technical foundation to targeted marketing. Whether we are developing, migrating or improving your store, we bring a structured approach and practical experience to deliver measurable improvements.
AI-generated image Online store development
PrestaShop, Shopify and Shopware – from analysis and advice to development, design, marketplaces, hosting and support.
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AI-generated image Online store migration
Move from WooCommerce, Gambio, Shopware and other platforms to PrestaShop or Shopify. We migrate products, customers, orders and design, with particular attention to retaining search visibility.
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AI-generated image Ongoing SEO
Strategy, technical optimisation and focused content for better rankings and commercially measurable visibility.
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AI-generated image Google Ads & Shopping
A considered advertising strategy, focused campaign management and continuous optimisation to make your budget work effectively.
Explore this service →
AI-generated image Customer retention with Klaviyo
Automated email, SMS and WhatsApp marketing for repeat purchases, higher order values and stronger customer relationships.
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AI-generated image Support & service
People who understand your business and help you move forward, with honest advice, commitment and fast support.
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Strong partners. Strong results.
Meet sjmedia.
We have developed digital solutions since 2005, with sjmedia officially founded in 2010. Since then, we have grown into a specialist e-commerce and online marketing agency.
Based in Kuppenheim near Karlsruhe, we support clients in Germany, Switzerland and Austria, with certified expertise in PrestaShop, Shopify and Shopware.
Germany
Austria
SwitzerlandInsights to help your store grow.
PrestaShop 9.2: what retailers should know about the new version
A new checkout, extra data fields and AI in the admin: what changes with PrestaShop 9.2 and what we check before an update.
PrestaShop vs. Shopify
Compare PrestaShop and Shopify: use cases, costs, customisation, international selling, maintenance and support.
E-invoicing in PrestaShop: deadlines and invoice workflows
German e-invoicing requirements and how PrestaShop, accounting software or an extension can work together.
Frequently asked questions
How much does an online store cost?
It depends on the platform, features and project goals. Small stores start in the low four figures in euros; more complex solutions cost more. We provide a transparent quote tailored to your project.
How long does a project take?
Smaller projects usually take four to six weeks; medium-sized and larger projects take three to six months, depending on requirements, available data and approvals. For migrations, we agree a realistic schedule in advance.
Do you take over existing stores?
Yes. We can handle maintenance, extensions, optimisation or a complete relaunch. We are also happy to review code developed by others.
Do you work on larger projects?
Yes. We support mid-market and upper mid-market e-commerce projects, including businesses with eight-figure annual revenue, multistore setups and complex integrations.
Do you also work with start-ups?
Yes, where there is a clear project idea and an ambition to grow. Your ambition matters more to us than the size of your business. A good working relationship is important too.
How do we work together?
Our process is structured and transparent. We use Zoho Projects, where you can follow progress, add comments directly and stay informed throughout.
„The migration from Shopware 5 to PrestaShop went surprisingly smoothly. We were particularly impressed by the structured approach and clear communication. Mr Nehrlich was always …“
Tell us about your project.
We listen, consider the options and give you a practical assessment.
Clear, personal and without obligation.
+49 7222-80 79 002
+49 7222-80 79 002
5 out of 5 · Google
„Requests are implemented quickly – they always find a way! Great service!“
„A good impression from the start, which proved well founded! Very knowledgeable, quick responses, honest advice, fair and transparent billing, and fantastic customer service.“
„Five stars – nothing more needs to be said. We have always received very knowledgeable and friendly support. We wholeheartedly recommend sjmedia!“