From public presence to working tool

Websites and web applications

Fast, mobile and secure websites and web apps, including copy, design, domain guidance and maintenance.

Websites and web applications

From public presence to working tool

The practical value for you

A website explains the offer clearly; a web app can also implement real processes and interactions.

Services covered here

  • Concept, design and development
  • Editorial work, SEO and technical quality
  • Forms, booking, shop or payment where needed
  • Hosting guidance, maintenance and Search Console

What a project can look like

Project example

Multilingual business website

The Castel site presents services and products in five languages with consistent metadata and contact paths.

Typical scenario

LoFiStrangers

A live 18+ web product combines anonymous text chat, interests, music and safety tools.

Typical scenario

Web application

A browser tool implements a special workflow without local installation.

From briefing to operation

1. Briefing

We clarify the goal, current situation, users and essential requirements.

2. Planning

You receive a rough framework for implementation, scope, timing and price.

3. Delivery

The project is built transparently, with regular feedback whenever useful or requested.

4. Handover

The solution is delivered or installed, tested and explained clearly.

5. Improvement

Support for agreed features and later extensions remain available.

What you receive

  • An implemented or installed and tested solution
  • Documentation, instructions and an access overview on request
  • Training for the people involved
  • Optional follow-up support, maintenance and improvements

Clear agreements

Self-management or full maintenance is agreed in advance. External platforms, payments and legal texts require separate approval.

IT-Service Castel

Frequently asked questions

Who is this service for?

Primarily small and medium-sized businesses, facilities and teams. Ambitious personal passion projects are welcome too.

Do you work on site?

Yes. On-site work is available in Berlin and Brandenburg and, depending on the project, throughout Germany. Travel effort and cost are agreed in advance.

How is the price determined?

Billing depends on the task, scope, risk and required support. You receive a transparent framework before work starts; there are no blanket bargain promises.

Can I get help at night or at weekends?

You can enquire at any time. Guaranteed acceptance, response or restoration times apply only when explicitly agreed. Any surcharge is confirmed before paid out-of-hours work starts.

How can I get in touch?

Directly by email, phone, WhatsApp or through the Castel community on Discord. The form only needs your name, email and message.

Selected service: Websites and web applications

Discuss your project

Briefly describe your project. I will clarify the goal, scope and most sensible next step with you.