Stefan Helker

Freelance web developer with focus on frontend

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I will digitize your ideas

As a freelance web developer with a focus on frontend, I have been transforming ideas and concepts as an interactive, modern and responsive website and web application into the digital world for over 10 years. I rely on an agile way of working, technologically modern standards and an appealing user experience.

Advice and conception

Advice and conception

My goal is the effective and individual implementation of your idea and the requirements of the project. For me, this includes a joint requirements analysis, well thought-out planning and sustainable implementation using web standards. The decision on the technical architecture and choice of systems is made depending on the budget and profitability. It doesn't have to be an individual application if a CMS like Wordpress achieves the goal.

Illustration Advice and conception
Requirements Analysis

Requirements Analysis

Your project idea is broken down into individual requirements with the help of a systematic procedure. All those involved in the project should thus have a uniform understanding of the object of development.

The right architecture

The right architecture

The appropriate, technical architecture is decided by the interaction between your requirements of the product and the project budget. The architecture should also represent a sound foundation for your project in the long term.

UX concept of the application

UX concept of the application

Your product is used by users. For this reason, a user-friendly concept and presentation is a crucial point for me, which contributes significantly to success.

Rapid Prototyping

Rapid Prototyping

Clickable mockups give you a feel for your application even before development. Complex navigation structures or unnecessary process sequences can be found out and avoided.

Illustration Advice and conception
Websites and applications

Websites and applications

With high-performance web frameworks, web applications can seamlessly replace classic desktop applications. They do not have to be installed by the user, they always run with the latest version on every operating system and are accessible at any time. I will accompany you with pure front-end implementations static website, CMS, shop systems or the development of individual web applications.

Performance

Performance

An optimized web application or directly as a PWA, the performance plays an important role for me.

quality standard

quality standard

Thanks to cross-browser testing and legacy measures, the applications run on the most popular browsers worldwide.

Agile way of working

Agile way of working

Agile development enables you to adapt to your requirements in every project phase, so you remain flexible.

Extensibility

Extensibility

The system has a modular structure to ensure easy maintainability and expandability.

Mobile Applications

Mobile Applications

Hybrid applications are developed with a cross-platform framework, ie a development language is used for several platforms (Android & iOS) and then translated into the native language. Thus, for example, the user interface, logic of the app and the Interfaces in the operating system developed only once. This saves time & duplicate code and therefore costs for you - during the initial development as well as future maintenance.

Illustration Mobile Applications
iOS and Android

iOS and Android

Your app will be distributed in the Apple App Store and / or Google Playstore and is therefore available for download in the App Store.

Performance

Performance

Like hybrid apps, cross platform apps are mainly written in web technology and then translated into high-performance native code.

Individual design

Individual design

Whether according to the interface guidelines from Apple & Google or an individual app design - you can choose which one represents your app better.

Sensors and push notifications

Sensors and push notifications

The app has access to all sensors of the smartphone and receives notifications via a push service that you can personalize.

Projects
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Interested in a collaboration?

Cologne, Germany
(+49) 15678 567 932
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