Web development Building digital experiences that inspire and innovate

We create web applications and websites customized to fit your specific requirements.

Web developer Jordi and Udo are standing at a desk, looking at a computer and discussing a project from the digital agency seitenweise.

Our approach Handcrafted websites that meet our high standards

Every website we create is uniquely designed and coded for each project. Our sites are lightweight, fast, and fully responsive across all devices. Pre-made WordPress themes or templates are not an option for us.

As the demands on websites evolve, we build with foresight and modularity. This ensures our websites are always expandable and ready for future updates.

To address our clients’ challenges comprehensively, we carefully select the technologies we use. This allows us to maintain the high quality our clients have come to expect from us.

Our development tech stack

WordPress

Tailwind

Timber

ACF

React

PHP

TYPO3

JavaScript

Raidboxes

Frontend development

We prioritize modern technologies and user-friendly design to deliver the best possible user experience. Our websites are not only visually appealing but also lightning-fast and fully responsive.

Backend development

We build robust backends for web applications, ensuring smooth functionality and high availability.

WordPress development

We plan, design, and develop sophisticated WordPress websites for businesses. Our focus is on delivering an exceptional user experience through top-tier design, fast load times, and intuitive navigation.

SEO

Your website’s content matters—not just for your users but also for search engines. With a strong technical setup, we ensure search engines can easily crawl and accurately rank your site.

API development

APIs enable seamless integration and communication between various systems. We create custom applications and utilize different APIs tailored to your specific requirements.

Performance optimization

Website speed is crucial—for both visitors and search engines. That’s why we aim for a Google PageSpeed Score of 90 or higher on all our web projects.

Web developers Andreas and Jordi talk about the implementation of PHP programming for a website on a laptop.

Our Expertise

Websites
WordPress and other CMS solutions
Configurators and calculators for products or services
Dashboards for data visualization
Newsletter systems
Interactive forms

Get in touch

Portrait photo of André Schwarzer - web development at the digital agency seitenweise in Bielefeld

Portrait photo of Marcel Pietsch - web designer at the digital agency seitenweise in Bielefeld

Your main contacts are Olli (left) and Marcel (right). As the heads of seitenweise, we’re your first point of contact.

Get in touchWe are excited to collaborate with you

Looking for support with your web design project? We are here to help! Take a look at our calendar and book a free consultation to get started.

Schedule a call Projekt anfragen