Web development & web design

Web development agency in Berlin.

We build websites your team can edit on its own, and we stay with relaunches until well after go-live. We have taken Echo Poster through two relaunches.

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01

Business first

We start with your business model, not with a framework. Technology is a means, not an end.

02

One team, one workflow

Strategy, design and engineering from one team - from the first sketch to the live deployment.

03

Measurably fast

Performance, Core Web Vitals and SEO are part of our definition of done - not an afterthought.

01 - What web development means here

Three paths, one standard.

Custom where it pays off - standard where standard is enough.

Custom websites & platforms

Marketing sites that convert and platforms that grow with your company. Tailor-made instead of templates - but only where customisation actually creates value.

Typical stack
ReactNext.jsTypeScriptHeadless CMS
React and Next.js development

Relaunch & migration

From the old build to the new one without ranking losses: we migrate content, redirects and structures cleanly - turning the relaunch into a measurable leap instead of a risk.

Typical stack
MigrationSEO preservationRedirect mapping

Performance, SEO & maintenance

After launch the real work begins: monitoring, updates, continuous optimisation. We stay on board until the numbers are right - and beyond.

Typical stack
Core Web VitalsMonitoringRetainer
02 - The DUNA formula

Four steps to a running product.

  1. Understand

    Free first call: goals, context, feasibility - in 30 minutes.

  2. Design

    Concept and clickable prototype before the first line of code.

  3. Build

    Development in short sprints, visible progress every week.

  4. Deliver

    Launch, measurement, further development - until the numbers are right.

What clients say

Five voices, one card at a time.

Platforms, ERP systems, relaunches - what our clients say about working with us.

“entsorgo is a fast-growing start-up in the waste-management industry. In DUNA we found a highly reliable partner who built, evolves and continuously supports our complete ERP system, our website and the Flutter app.”

Maximilian Iliew entsorgo GmbH entsorgo and DUNA belong to the same group of companies.

“DUNA has been our long-term partner and has guided us through two website relaunches. The team also handles our ongoing website support and AWS management.”

Roman Jerrent Echo Poster Echo Poster and DUNA belong to the same group of companies.

“We had to pull off a rebrand from Bitwala to NURI on short notice. Everything had to be new - including the website. As a neobank we have high demands on security, design and usability. DUNA took the job on very short notice and supported us well beyond the MVP.”

Pascale Bastian NURI GmbH

“To keep up with growing demand at consistent quality we work with DUNA. In DUNA we have a reliable partner that gives us the flexibility and scalability today's project business requires.”

Gennadij Korol netgo group

“When we were looking for a capable agency to create our new website, DUNA was highly recommended by another company. Finoa is managing assets, so security is highest priority for us. DUNA provided us with a convincing security strategy and a competent team.”

Lili Giordano Finoa GmbH

Web development from Berlin - for all of Germany and beyond.

We work from Berlin and Budapest and show up when it counts - kickoffs, workshops, launches. Start-up or Mittelstand alike.

04 - Straight answers

Frequent questions about web development

What does a professional website cost?

Depending on scope: marketing sites start in the low five figures, platforms and web apps above that. After the free first call you get a concrete, transparent estimate.

A marketing website: 4 to 8 weeks. A platform or web app: 3 to 6 months to the first live version. Sprints mean you see real results long before launch.

Honest answer: not every project needs custom development. In the first call we tell you where a CMS is enough - and where tailor-made work truly pays off.

Monitoring, updates, optimisation - as a retainer or per project. We hand over clean documentation if you want to continue in-house. No vendor lock-in.

05 - How we work together

Three models, one start.

Project-based

from €15,000

Fixed goal, fixed frame: website, relaunch or platform as a milestone project - transparently estimated after the first call.

For clearly scoped initiatives.

Retainer

from €1,500 / month

Maintenance, monitoring and continuous improvement after launch - we stay on board until the numbers are right.

For everything after go-live.

Every model starts with the same step: a free first call and a first assessment.

06 - From the magazine

Keep reading, without buzzwords.

All articles
07 - Quick inquiry

One step, 60 seconds.

Reply within 24 hours - with a clear assessment of your web project.

  1. We read every inquiry ourselves - no ticket system.
  2. Free first consultation, 30 minutes, no sales pressure.
  3. No newsletter, no spam.

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