E-Commerce · Shopware · B2B / B2C / D2C

E-Commerce Agency for more revenue

Q: What does building an online shop with nextlevels cost?

It depends heavily on scope. A manageable shop based on Shopware typically starts from around €7,500, while complex B2B or headless projects with ERP and PIM interfaces sit above that. On top come running costs for hosting, licenses and maintenance as a separate line item. You get a concrete fixed-price offer after a short discovery in which we clarify requirements, interfaces and data volumes.

Q: How long until my shop goes live?

It depends on the project type. A clearly scoped standard B2C shop usually goes live in 8 to 12 weeks; a migration or a B2B/headless project with ERP and PIM integration takes more like 4 to 6 months. The range depends on the number of interfaces, the complexity of your assortment and the data migration. We work in iterations: you see a working state early and give feedback, rather than only seeing the finished result at the end. You get the binding phase plan with a go-live date after discovery, not only after the project starts.

Q: Which shop system do you recommend – Shopware, headless or something else?

Our focus is Shopware, because as an open-source system it is powerful, extensible and well established in the German mid-market. We recommend headless architectures (Shopware as backend, your own frontend) when you need maximum frontend freedom or special performance. We make the decision based on your requirements, not on principle – a simple shop doesn't need a headless setup.

Q: Can you migrate my existing shop?

Yes. We migrate existing shops in four clearly separated phases: technical audit, data migration (product data, customers, order history), parallel development of the new platform and cutover with active monitoring. We carry over your URL structure via a complete 301 redirect concept that we check against a live crawl of your old shop, so your SEO substance is preserved. We plan the cutover without a big bang and without a drop in revenue; after go-live we actively monitor rankings and error rates for several weeks and adjust as needed.

Q: Do you support B2B, B2C and D2C equally?

Yes. In B2C, conversion, speed and a frictionless checkout matter most. In B2B, requirements such as customer-specific price lists, tiered pricing, order approvals, quotation features and ERP integration come into play. We support D2C brands from brand staging to the logistics interface. We build the shop around your business model, not the other way round.

Q: How do you ensure performance and scalability?

Performance isn't an afterthought for us but part of the architecture. We optimize for good Core Web Vitals, use caching, a CDN and clean database indexes, and test behavior under load. That keeps your shop fast and stable even during load peaks such as sales campaigns or Black Friday.

Q: What about data protection, security and payment processing?

We build shops GDPR-compliant and integrate payments via certified payment providers, so no sensitive card data sits on your server. Updates, secure configuration and a roles-and-permissions concept are standard for us. In e-commerce, security isn't an optional add-on but a prerequisite for trust and conversion.

Q: Who owns the shop – does vendor lock-in arise?

You own everything: code, configuration, data and content. Because we build on open-source technology like Shopware, you're not tied to proprietary systems and could in principle hand operations to another team. We document cleanly – vendor lock-in is not our business model.

Q: What does an e-commerce agency do for B2B & B2C?

An e-commerce agency plans, builds and runs online shops across the full lifecycle – from strategy and UX through technical implementation to operations and growth. We cover B2C and B2B from one team: in B2C, conversion, speed and a frictionless checkout matter most; in B2B, customer-specific pricing, tiered prices, order approvals and ERP integration come into play. So you get shop, interfaces and marketing from a single source instead of from three vendors.

Q: Are you a Shopware agency or an agency for online shops in general?

Both. Our focus is Shopware because it is established, open and extensible in the German mid-market. As an agency for online shops, though, we think platform-neutral: if a headless setup or a custom build fits your business model better, we say so – and build it. We make the platform recommendation after a look at your assortment, processes and growth goals, not on principle.

E-commerce solutions with maximum performance are our thing. We build online shops for B2C, B2B and D2C with proven technologies and a fine sense for usability. Consulting, strategy, UX/UI design, development and integrations: all from a single source.

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In short

An e-commerce agency plans, builds and runs online shops for B2C, B2B and D2C – from strategy and UX through Shopware development and ERP integration to day-to-day operation. At nextlevels a clearly scoped Shopware shop starts from around €7,500 and goes live in 8 to 12 weeks; B2B or headless projects with ERP and PIM integration take more like 4 to 6 months. References include Bike Discount, one of Europe's big players in the bike trade.

E-commerce experience in numbers

50+: In-house plugins
<1s: Avg. server response time (Tideways)
13: Years of experience
€500M: More than that in annual shop revenue managed

Brands that work with us

E-Commerce from a single source

Six disciplines, one team. From platform to scale, we build your digital future together.

Future-proof growth

Platform development and management

We find the right e-commerce platform for your business and set it up properly.

Migrate safely

Migration & Replatforming

Move to a modern platform with parallel operation, secured data migration and redirect mapping to protect your rankings. How does the switch succeed?

Fully connected

Integrations & interfaces

We connect ERP, PIM, payment and more to your shop, API-first and fail-safe.

Win B2B

B2B-E-Commerce

Customer-specific pricing, approval workflows and ERP integration. How does your shop meet B2B demands?

Boost revenue

Conversion Optimization

More revenue from the traffic you already have. Where are you losing customers, and how do you win them back?

Scale faster

Performance optimization and scaling

Shorter load times and an architecture that handles traffic peaks.

What really matters in e-commerce

A successful online shop is never the result of good design alone. What counts is the interplay of performant shop technology, frictionless checkout flows and a platform that scales with your growth. That is exactly where we come in as an e-commerce agency: from Shopware and headless commerce to deep ERP and PIM integration.

We think about your shop from the customer and the revenue first: fast load times, a well-designed customer journey and cleanly measured conversion points. That turns visitors into returning customers and your shop into a reliable sales channel.

Performance & load time
Every second of load time costs conversion. We optimize Core Web Vitals, caching and server response times measurably.
Scalable platform
An open-source base like Shopware, with no vendor lock-in and full control over code, data and roadmap.
Connected systems
ERP, PIM, payment and shipping cleanly linked, so orders run automatically instead of manually.
Conversion & data
We measure what matters and optimize along real numbers instead of gut feeling.

Why Shopware?

Open platform. Full control. Grows with you.

API-first: Open, no vendor lock-in
B2B · B2C · D2C: One system for every model
Extensible: Plugins + custom development
Shopware partner: Hundreds of project hours

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Online shop agency for B2C, B2B and D2C

As an online shop agency we support your project from consulting through to day-to-day operation: strategy, UX/UI design, development and integrations from a single source – on Shopware or custom-built. Where online shops lose revenue and which levers work first is shown on More revenue from your shop.

Beyond the shop and its integrations, new obligations and channels are coming into view: e-invoicing in B2B, the digital product passport (DPP) with machine-readable product data and agentic commerce, where AI agents shop on behalf of their users.

Looking for Shopware expertise on site in the Rhineland? Our Shopware agency Düsseldorf supports projects in Düsseldorf, Cologne and across NRW – in person or remote.

Planning a B2B shop with Shopware? Read what the Shopware B2B Suite vs. Components decision means – features, costs and why the Suite is being phased out in 2026.

Want to have an online shop built? Our guide having an online shop built explains the process, costs and what matters with Shopware 6. How we work as an online shop agency we show with references from B2C, B2B and D2C.

What does a Shopware shop cost? We break down license, development, hosting and maintenance with typical market ranges.

What will your Shopware project cost? The Shopware price calculator estimates the effort for project type, modules and integrations – free and without sign-up.

How fit is your current shop? The free Shopware audit checks more than 25 points on performance, security and SEO.

Partnership, not a black box

We build e-commerce from the customer back: clear discovery, iterative development and transparent communication. You're involved at every stage.

Discovery & strategy

Goals, audiences, scope and integrations are defined up front. That's the basis for a solid quote.

Concept & UX

Information architecture, user flows and checkout are planned before a single line of code.

Iterative development

We build in sprints and show working results early. You give feedback throughout, not just at the end.

Launch & quality

Testing, performance and security are part of it. Go-live is planned, not improvised.

Operations & evolution

After launch we stay on board: support, steady release cycles and continuous optimization.

Image about: Partnership, not a black box

Real E-Commerce Successes

Become our next success story

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Why brands choose nextlevels

With us you're always at the cutting edge of technology and benefit directly from our developer expertise. Together we analyze your shop, identify key areas and develop tailor-made solutions. Your goals and expectations are at the center of our work.

Developers, not resellers
Your shop is built by developers who really understand the code. We pass nothing to subcontractors.
Shopware down to the detail
Architecture, API integration and performance from hundreds of project hours.
One team, every discipline
Development, design and marketing come from one team that works without friction at the handoffs.
Built for growth
We build measurably for conversion, load time and revenue.
Partner, not vendor
We stay on after launch and keep developing your shop continuously.

Free download

Headless: is it worth it? – Decision guide

“Headless” sounds like progress, and that is exactly what makes the decision hard. Whether the switch pays off depends on your shop: touchpoints, performance, team, budget. This guide weighs it up neutrally, with an honest cost breakdown and a decision tree for SMEs.

Download

Shopware, Shopify or a custom build?

The right platform depends on your assortment, processes and growth goals. Here's a rough orientation to help you decide – we make the concrete recommendation after a look at your use case.

Criterion	Shopware 6	Shopify	Custom build
Best for	Growing B2C & B2B brands with their own processes	A fast start and standardized B2C shops	Very specific business models with no shop standard
Customisability	Very high, open source, full code access	Limited to the app ecosystem & theme boundaries	Maximum – anything is possible, everything must be built
Running costs	Hosting & maintenance, no revenue share	Monthly fee plus, in part, transaction fees	Pure operating costs, but a higher initial investment
B2B features	Strong, incl. native B2B components	Add-on via apps/Plus	Freely implementable, but built entirely from scratch
Data & ownership	Full control, no vendor lock-in	Data in the Shopify cloud, platform lock-in	Completely in your hands

Market-typical orientation as of 2026 – not binding prices. Our focus is Shopware; in a first call we recommend the platform that truly fits you.

E-Commerce Data & Insights

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Creating ETIM data with AI: from datasheet to BMEcat export

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E-invoicing in wholesale from 2027: what to check in your ERP and Shopware now

Commerce & Shopware28/10/2026

Shopware 5 migration with ERP integration: how manufacturers move to Shopware 6 without breaking the ERP link

Commerce & Shopware28/10/2026

BFSG in online shops for manufacturers: obligations and where D2C shops fail

E-commerce – frequently asked questions

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What does building an online shop with nextlevels cost?

It depends heavily on scope. A manageable shop based on Shopware typically starts from around €7,500, while complex B2B or headless projects with ERP and PIM interfaces sit above that. On top come running costs for hosting, licenses and maintenance as a separate line item. You get a concrete fixed-price offer after a short discovery in which we clarify requirements, interfaces and data volumes.

How long until my shop goes live?

It depends on the project type. A clearly scoped standard B2C shop usually goes live in 8 to 12 weeks; a migration or a B2B/headless project with ERP and PIM integration takes more like 4 to 6 months. The range depends on the number of interfaces, the complexity of your assortment and the data migration. We work in iterations: you see a working state early and give feedback, rather than only seeing the finished result at the end. You get the binding phase plan with a go-live date after discovery, not only after the project starts.

Which shop system do you recommend – Shopware, headless or something else?

Our focus is Shopware, because as an open-source system it is powerful, extensible and well established in the German mid-market. We recommend headless architectures (Shopware as backend, your own frontend) when you need maximum frontend freedom or special performance. We make the decision based on your requirements, not on principle – a simple shop doesn't need a headless setup.