Web designers & web developers
Web design, company websites, portals and web apps with React, Vue, Next.js and Laravel — fast, accessible and search-optimised.
Software development — programmers & developersSoftware development that lasts.
Software development from concept to operations: programmers, software developers and web designers work as one team at Quell-Code on your custom software, website, app or AI solution.
01
One team instead of five vendors
Many projects don't fail because of code but at the hand-offs: the agency delivers the web design, a freelancer programs the app, a third party runs the server — and nobody owns the whole.
At Quell-Code, experienced programmers and software developers own the complete chain: requirements, architecture, web design, programming, testing, deployment and maintenance. Whether custom business software, a website relaunch, a mobile app or an AI integration — you have one contact who understands every layer.
Our focus is AI development, but the foundation is classic software engineering: clean code, automated tests, documented interfaces and state-of-the-art security.
02 — Roles
The developers you get with us.
App developers
Native apps for iOS (Swift) and Android (Kotlin, Java) or cross-platform with Flutter and React Native.
AI developers
AI agents, RAG systems and LLM applications with the OpenAI API or local models — connected to your data.
Automation developers
Interfaces, workflows and integrations that replace manual work between your systems.
Back-end & database developers
APIs, database design, T-SQL, MongoDB, algorithms and data analysis — the foundation of good software.
Server & DevOps engineers
Linux and Windows servers, deployment, monitoring and secure operation of your applications.
03 — Process
From first call to a running system.
Short iterations, visible progress and software that belongs to you — source code included. More about how we work
- 01Analysis
- 02Concept & web design
- 03Programming
- 04Testing & launch
- 05Operations & care
Since 1999
At home in source code for over 25 years.
From the PHP back ends of the early 2000s to today’s AI agents: this experience goes into every architecture decision — so your software is still maintainable ten years from now.
About04
Programming languages & frameworks
We choose technology by the problem, not by habit. Our most important tools include:
Plus Java, Objective-C, Lua, T-SQL, TensorFlow.js, OpenCV, Socket.io and Asterisk. See all 57 technologies
05
Questions on software development
What does a programmer or software developer cost?
It depends on scope. After a short analysis you receive either a fixed price for a clearly defined project or time-and-materials billing for ongoing development — always with a transparent estimate up front.
What is the difference between web design and web development?
Web design shapes the structure, look and user journey of a website. Web development implements that design technically — including performance, security, interfaces and SEO. We deliver both from one team.
Freelancer or development team — which is better?
A single freelancer is often ideal for small tasks. As soon as web, app, database, server and AI have to work together, a team experienced in every layer saves coordination effort and avoids gaps between systems.
Do you take over existing software and projects?
Yes. We analyse existing code, document it, fix security issues and develop it further — or migrate it step by step to a modern architecture.
Do you work with clients outside your city?
Yes. We work for companies in Germany, Austria and Switzerland — mostly remote, on-site meetings by arrangement.
Ready when you are
Let’s talk.
Describe your project in a few sentences — you’ll get an honest assessment of feasibility, effort and the way forward.
- info@quell-code.com
- Phone
- Call-back on request
- Response time
- usually 2 working days
- Languages
- Deutsch · English · Türkçe