Developer skills as a freelancer for web development

As a freelancer, it is particularly important to have a broad range of skills and knowledge in different technologies in order to be attractive to potential clients and meet their requirements. As a decision maker considering me as a freelancer, you can be sure that I have a good command of my tools and technologies and am constantly striving to further my education and familiarize myself with new areas of software development.

I have already worked successfully on various projects with different technologies and I am sure that I can develop the right solution for your requirements.

Cypress.IO Workshop and Sulu CMS Workshop in Duisburg, Inhouse or remote.

  • Postman API Collection for AI Development

    Postman API Collection for AI Development

    Development in the integration of multiple AI API endpoints is opening up incredible opportunities for new business models, especially through the chaining of commercial, local, and open-source LLMs.

    The capabilities of Postman, particularly when working with GitHub as open-source API endpoints, are truly spectacular. I’ve recently released videos on my YouTube channel that explore these possibilities in detail. Check them out to see how you can leverage these tools to enhance your projects and workflows.

    postman.com

  • Claude 3 from Anthropic for 'Fade to Accessibility' since 2024

    Claude 3 from Anthropic for 'Fade to Accessibility' since 2024

    Since 2023, I've been utilizing Claude 3 by Anthropic for the project 'Fade to Accessibility,' an AI-powered website grabber. This tool automatically transforms existing websites into accessible pages by using Astro JS and Tailwind CSS. Claude 3 enables efficient and intelligent analysis and conversion of web content, significantly enhancing accessibility and user experience.

    anthropic.com

  • Mistral AI Cloud & LM Studio since 2024

    Mistral AI Cloud & LM Studio since 2024

    Since 2024, I have been working with Mistral AI Cloud and LM Studio to develop advanced AI-powered applications. These platforms provide powerful machine learning and data analytics tools that allow me to efficiently implement and scale intelligent solutions. By using Mistral AI Cloud and LM Studio, I optimize the development and training of AI models to create accurate and innovative products.

    mistral.ai

  • Astro Framework for High-Performance-Websites

    Astro Framework for High-Performance-Websites

    Since 2024, I have been using the Astro framework to develop high-performance websites. Astro enables optimized loading speed through partial JavaScript loading, which significantly improves the user experience. This innovative framework supports the creation of fast, modern web projects that are characterized by outstanding performance and efficient use of resources.

    astro.build

  • Jest Unit Testing in TypeScript-Projects

    Jest Unit Testing in TypeScript-Projects

    Since 2019, I have been using Jest for unit testing in TypeScript projects to develop high-quality, bug-free software. Jest allows me to implement robust and fast tests that ensure every function works as expected. By integrating Jest into my TypeScript environment, I ensure code stability and reliability at all stages of development.

    jestjs.io

  • Headless CMS: Contentful since 2023

    Headless CMS: Contentful since 2023

    Since 2023, I have been using Contentful, a leading headless CMS, to develop flexible and scalable content management solutions. This platform allows me to efficiently manage and distribute content via API connections, creating customized, omnichannel experiences. Contentful provides the tools to realize dynamic and modern web projects and integrate seamlessly with different frontends.

    contentful.com

  • Mailosaur - E-Commerce Funnel Marketing

    Mailosaur - E-Commerce Funnel Marketing

    Mailosaur has enabled me to accurately test email communication in e-commerce projects since 2021. I specialize in validating marketing funnels by ensuring that confirmation and password reset emails work correctly. By using Mailosaur's API, I achieve effective verification of these essential communication channels.

    mailosaur.com

  • Cypress.IO Website Testing

    Cypress.IO Website Testing

    • Since 2018, I've been engaged in daily development across various CMS, e-commerce, and SaaS projects.
    • I’ve published an open-source base template and a best-practice testing plugin.
    • In 2022, I was honored to be named a Cypress.IO Ambassador 
    • I've also delivered talks at conferences and meetups
    • YouTube Tutorial Playlist with over 20 videos

    cypress.io

  • BrowserStack Multi Device Testing

    BrowserStack Multi Device Testing

    Since the summer of 2023, I've been a German YouTube Creator for BrowserStack with a personal focus on website testing across different devices and accessibility.

    browserstack.com

  • Percy.IO Regression Website Testing

    Percy.IO Regression Website Testing

    Percy.IO is a very good tool for displaying screenshot comparisons as Visual Regression Website Testing. 

    percy.io

  • Rector PHP Instant Updates

    Rector PHP Instant Updates

    getrector.org

  • PHPUnit Testing in all PHP Projects

    PHPUnit Testing in all PHP Projects

    With PHPUnit tests it is possible to test very good requirements for the functions of individual methods of PHP code. As a PHP consultant, I have been helping developer teams to start and expand their test coverage for many years. I do this in Symfony, TYPO3 and all other PHP projects.

    phpunit.de

  • Symfony Framework

    Symfony Framework

    • Discounto Update from Version 2 and PHPUnit Testing
    • NCA Waterpolo Open Source Project with Wordpress and Website Importer

    symfony.com

  • Tailwind CSS Freelancer

    Tailwind CSS Freelancer

    • Webpack Encore Setup for Symfony Projects: Streamlining the integration of Webpack Encore to optimize asset management and build processes in Symfony projects.
    • Tailwind UI Kit Best Practice Components: Leveraging Tailwind's UI Kit to create reusable, best practice components that enhance design consistency and efficiency.
    • Accessible Web Design: Focusing on creating web designs that are inclusive and accessible to all users, adhering to the latest accessibility standards.
    • Improved Website Performance and CO2 Footprint: Implementing strategies to enhance website performance while reducing its environmental impact, contributing to a greener web.
    • Custom Web Design for Content Marketing and Landing Pages: Crafting tailored web designs that drive engagement and conversion, specifically for content marketing and landing pages.

    tailwindcss.com

  • Codeception PHP Testing Framework

    Codeception PHP Testing Framework

    • API Testing for PHP and TYPO3 Headless Projects: Implementing robust API testing strategies specifically for PHP and TYPO3 headless projects to ensure seamless integration and functionality.
    • Acceptance Tests Integration into the TYPO3 Testing Framework: Enhancing the TYPO3 testing ecosystem by integrating comprehensive acceptance tests, ensuring that end-user requirements are met with precision.
    • In-House Workshops for Developer Teams Since 2016: Conducting hands-on workshops tailored for developer teams, focusing on modern best practices and tools, enhancing team skills and project outcomes.
    • Freelancer for Numerous Agency Projects: Offering freelance expertise for a wide range of agency projects, providing specialized skills and solutions to meet diverse client needs.

    codeception.com

  • Sulu Symfony Fullstack CMS

    Sulu Symfony Fullstack CMS

    sulu.io

  • GitKraken Git Versioning

    GitKraken Git Versioning

    • Significantly improved organization for large projects in big teams
    • Optimization for open-source projects with GitHub
    • Faster Git tasks like merge, rebase, and checkout

    gitkraken.com

  • Webpack CSS JS Module Bundler

    Webpack CSS JS Module Bundler

    • Dependency  Manager for Frontend Tasks
    • Foundation for modern web design in 2023
    • Accessible components as a best practice collection

    webpack.js.org

  • Alpinejs JavaScript Framework

    Alpinejs JavaScript Framework

    • Javascript for Tailwind CSS components
    • Dark Mode
    • Mega menues
    • FAQ Cards

    alpinejs.dev