Hello and welcome to my Portfolio!
A Brief Overview about me
Welcome to my portfolio website for web development. My name is Fabian Bitter, and I have a long career as a web developer, with numerous projects ranging from highly complex systems to creative, customized web applications. I possess a broad range of skills, including graphic and video production, consulting, and IT security. However, this portfolio focuses exclusively on my web development references. Here, I showcase selected projects that impressively reflect my expertise and innovation in the design, development, and implementation of modern web solutions.
Senior Web Developer
Extensive experience in frontend and backend development for powerful and scalable web applications.
Software Architect
Design and implementation of robust software architectures for complex digital systems.
Concrete CMS Expert
I am a Marketplace author for Concrete CMS, having developed themes and add-ons, and was even part of the core team at Portland Labs.
Serial Entrepreneur
Founder of several companies in Germany, the USA, the UK, and the UAE.
Online Marketing Expert
Strategic consulting and execution of data-driven marketing campaigns for conversion optimization.
Author & Online Instructor
Explaining complex topics in an understandable way as an author and online instructor.
IT & Cybersecurity Consultant
Consulting and implementing IT security solutions with a focus on data protection and resilience.
Numerous companies – whether as a direct client, in permanent employment, or as a subcontractor – have already relied on my expertise. From global corporations like BASF and the US Army to innovative startups and medium-sized businesses, I have had the opportunity to work on demanding projects. Whether complex web applications, custom CMS solutions, or high-performance platforms, my focus is always on quality, efficiency, and sustainability. Perhaps it is my foresight, my attention to detail, or simply the experience from over 20 years in digital development. Whatever the reason, the result always counts – and it has always been top-notch.
The logos are protected by copyright in Germany and/or other countries and belong to the respective rights holders.
My Professional Journey
I'm the classic example of a dropout with extensive professional experience. For over 20 years, I've been working in web development, both in frontend and backend. Instead of focusing on theoretical studies, I chose the practical route and taught myself everything. Although I never completed a university degree, many students have completed their internships with me.
During my time at VUCX GmbH, I completed my apprenticeship as an IT specialist in the field of application development. I realized IT projects for well-known companies such as Procter & Gamble, Wella, Hugo Boss, Mühlen Kölsch, and others.
Obtained my Fachhochschulreife (equivalent to a university of applied sciences entrance qualification) at a technical college specializing in design, with a strong focus on videography, photography, and design. This education perfected my cross-media skills and elevated my sense of visual communication to a new level.
Began studying Media Technology (dropped out).
At eWorks GmbH, I worked on various projects, including the development of a new online shop for Expert Technomarkt and contributing to an online portal for Deutsche Post AG.
As a project manager and team leader, I coordinated challenging projects for Deutsche Telekom. In this role, I was responsible for aligning teams and successfully implementing the projects.
Since 2011, I have been working as a freelancer, realizing numerous customer projects in web development. During this time, I have not only implemented tailor-made projects but also founded companies – including Bitter Digital Solutions GmbH and Gutachter Engel GbR – as well as other companies abroad. In addition to practical implementation, I also work as a lecturer and author of professional books, sharing my knowledge and continuously introducing new ideas to the industry.
My Concrete CMS Certificates
I have obtained all available certificates for Concrete CMS, which demonstrate my extensive expertise in the development, customization, and optimization of websites and web applications using this CMS. These certifications highlight my comprehensive knowledge and skills in all areas of Concrete CMS.
The graphics are protected by copyright in Germany and/or other countries and belong to the respective copyright holders. The operators of linked pages are solely responsible for their content. No liability is assumed.
My Concrete CMS Achievements
My awards for Concrete CMS reflect my ability to develop innovative and user-friendly web solutions that meet the demands of the digital world.
The graphics are protected by copyright in Germany and/or other countries and belong to the respective copyright holders. The operators of linked pages are solely responsible for their content. No liability is assumed.
My Concrete CMS Partnerships
Over the years, I have built numerous partnerships with Concrete CMS (formerly concrete5) and earned various partner certifications. Below is an overview of the partner programs.
The graphics are protected by copyright in Germany and/or other countries and belong to the respective copyright holders. The operators of linked pages are solely responsible for their content. No liability is assumed.
My GitHub Achievements
On GitHub, I have contributed to several open-source projects that are highly regarded in the developer community. These achievements demonstrate my commitment to software development.
The graphics are protected by copyright in Germany and/or other countries and belong to the respective copyright holders. The operators of linked pages are solely responsible for their content. No liability is assumed.
My HackerOne Achievements
As a Bug Bounty Hunter, I have uncovered several security vulnerabilities, including critical SQL injections. These achievements highlight my skills in cybersecurity and my ability to identify weaknesses in systems.
The graphics are protected by copyright in Germany and/or other countries and belong to the respective copyright holders. The operators of linked pages are solely responsible for their content. No liability is assumed.
My HackTheBox Achievements
Through my participation in HackTheBox, I have earned awards in ethical hacking and penetration testing, documenting my experience in system auditing and vulnerability analysis.
The graphics are protected by copyright in Germany and/or other countries and belong to the respective copyright holders. The operators of linked pages are solely responsible for their content. No liability is assumed.
My Google Certifications
My Google certifications confirm my expertise in web development, online marketing, and data analysis, complementing my technical knowledge for innovative solutions.
The graphics are protected by copyright in Germany and/or other countries and belong to the respective copyright holders. The operators of linked pages are solely responsible for their content. No liability is assumed.
Photos about my Business
Here you get an exclusive insight into my business, including my in-house audio and video studio, event photos, merchandise items, and much more.
All images displayed on this page are copyrighted and may not be used without explicit permission.
Videos about me
There are several videos about my professional background. Below is a list of all the published videos.
Golden Beton Award passed on to Franz
After being nominated for the Golden Beton Award, I passed it on to Franz. As CEO of Portland Labs, he tirelessly worked on the development of Concrete CMS. In this video, I explain why he deserves this award.
Golden Beton Award received
Concrete CMS awarded me the Golden Beton Award for my voluntary work. This includes my engagement in the PRB exam committee, numerous Marketplace extensions, my book, and my support in core development. In this video, I talk about the significance of this recognition for me.
Introduction as Core Developer
In this video, I tell the story of how I joined the team at Portland Labs Inc. as a Core Developer. For two years, I worked actively on the core of Concrete CMS and contributed to projects for notable clients such as the US Army and BASF.
The operators of the linked pages are solely responsible for the content. No liability is accepted.
My Client Projects
A picture is worth a thousand words – that’s why you will find here an almost complete collection of my web development projects, each with a screenshot and a brief description. Listed are only the projects where I took on the full implementation or played a leading role. Projects where I was only involved in a supporting capacity are not included. Some older projects are no longer online, but I have made an effort to put together as comprehensive an overview as possible.
My Own Projects
In recent years, I have successfully implemented a variety of my own projects, which have brought me not only valuable experience but also exciting challenges. Here, I present a selection of my active projects, where I am involved as an owner or shareholder. Each of these projects reflects my passion and commitment to creating innovative solutions. By clicking on the respective logo, you will be directed to the detailed project page.
The operators of the linked pages are solely responsible for the content. No liability is accepted.
My addons for Concrete CMS
I have developed a variety of addons for Concrete CMS that are easy to install and enhance pages with valuable features. All available addons can be found via the links to the Concrete CMS Marketplace. For custom solutions, feel free to contact me – contact details are provided below. The addon Bitter Shop System has been certified by Klarna and Mollie and is listed in their integration centers.
Multimedia Slideshow
Create responsive slideshows with images and videos, supporting multiple video formats. ...
HTML Beautifier
An HTML post-processor that cleans and structures the HTML code of your site before it's delivered to the client. ...
Temporary Redirect Attribute
An attribute type that enables temporary redirects to another page within the sitemap, offering a flexible and cache-friendly solution. ...
Dropzone Attribute
Add a drag & drop file upload field anywhere attributes are supported in Concrete CMS. ...
Animated Logo Slider
Display logos in a smooth, continuously looping animated strip using a gallery block template. ...
Progressbar
Display animated progress bars with customizable values and labels to highlight skills or statistics. ...
Team Member
Easily showcase your team members with editable profiles including photo, role, contact details, and social links. ...
Panorama Viewer
Display 360-degree panoramic images with interactive navigation using a 3D viewer. ...
Compare Images
Display two images side by side with a draggable slider to compare them interactively. ...
Card
Render a simple, customizable Bootstrap 5 card element with header, body, and footer sections. ...
Login Pro
Login Pro for Concrete CMS is a customizable mini-theme that matches your login screens to your site's corporate identity.
Redirector
Redirector lets you create and manage 301 redirects directly in Concrete CMS—no .htaccess needed. Ideal for SEO and site migrations, and compatible with any web server.
Responsive Spacings
Add responsive CSS spacing classes (margin & padding) to any block, container, or area in Concrete CMS.
Structured Data
Structured Data is a Concrete CMS add-on that lets you easily add structured data to your website using a block-type, built-in JSON editor, and ready-to-use templates ...
Javascript Obfuscator
Javascript Obfuscator is a Concrete CMS add-on that hides your inline Javascript code by obfuscating it, improving security and protecting your source logic ...
Smartbanner
Smartbanner is a Concrete CMS add-on that displays a sleek banner on your website promoting your mobile app from the App Store or Google Play ...
Lazy Scroll
Lazy Scroll is a Concrete CMS extension that brings ultra-smooth, modern scrolling animations to your website with One-Click-Installation ...
Simple TypeIt
Simple TypeIt is a Concrete CMS block type that lets you effortlessly create animated typing effects using the powerful TypeIt JavaScript library ...
Fade In Sections
Fade In Sections is a Concrete CMS extension that adds smooth fade-in animations to elements as they appear on the screen ...
AI Assistant
AI Assistant integrates powerful AI features like content generation, translation, and SEO automation directly into Concrete CMS ...
Simple Toastify Notifications
Replaces Bootstrap alerts and form messages with elegant Toastify notifications in the top-right corner – for a cleaner, more modern user experience in Concrete CMS ...
File Storage for S3
Enhance your file management in Concrete CMS by integrating Amazon S3 for secure and scalable file storage ...
Map Styles
Give Google Maps on your Concrete CMS website a unique look and feel. The Map Styles add-on lets you customize colors, elements, and the entire appearance of your maps to match your design ...
Sidebar Theme
Sidebar Theme is a sleek and minimal Concrete CMS theme powered by Bootstrap 5, featuring a clean layout with a left-hand sidebar for intuitive site navigation ...
Portfolio Theme
A modern and professional Concrete CMS theme – perfect for business portfolios. Built for version 9 and based on the Bedrock framework ...
Simple Theme
Simple Theme is a minimalist Concrete CMS theme optimized for one-pagers, perfect for short and sharp presentations without a main navigation ...
Entity Designer
Transform your Concrete CMS projects with the Entity Designer add-on, which lets you create Doctrine entities easily—mirroring the simplicity of Express Data Objects ...
Push Notifications
Engage your website visitors with real-time browser notifications—easy setup, no third-party service needed.
Database Manager
Manage and edit any table in your Concrete CMS database directly from the dashboard—quickly and securely.
File System Manager
Browse, edit, move or delete files and folders on your server right from the Concrete CMS dashboard.
Simple Navigation
A clean and lightweight block for building navigations with minimal effort and full flexibility.
Simple Google Reviews
Display your latest Google Business reviews on your website with a simple, GDPR-compliant solution.
Simple Email Obfuscator
Protect email addresses from spam bots using client-side JavaScript obfuscation—zero configuration needed.
The operators of the linked pages are solely responsible for the content. No liability is accepted.
My Book: Theme Development with concrete5
Based on my extensive experience, I have written the technical book Theme Development with concrete5. This book serves as a comprehensive guide for developers and designers who want to create custom themes for concrete5. The digital version of the book is available on Apple, Amazon, and Google. The print version is also available in almost every bookstore in Germany.
The operators of the linked pages are solely responsible for their content. Liability is not assumed.
My Contact Options
I design and develop customized solutions for clients of all sizes, specializing in stylish, modern websites, web services, and online shops.