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Stefano Kowalke
Developer

About

I am freelance PHP developer with over 15 years experience. I started my carreer with TYPO3 and extension developing but shifted my focus towards Laravel and Statamic over the last 8 years. I specialized in refactoring legacy PHP codebases and from time to time I implement a webshop in Shopify. Certified experience in the application of the GDPR completes my profile.

Work Experience

Arroba IT
Flensburg
January 2018 – Present
Owner and developer
As a freelancer I work for various customers, you can see a selection below. Beside those there are little projects I am not allowed to disclose the name but describe the project itself. Those you will find here.
Highlights
  • Web-Applications with Laravel and VueJS
  • Installing and configuring Statamic sites
  • Integration of Google Tag Manager, Google Analytics, Google Adwords, Google Business and Google Merchant
  • Installing booking systems with Pretix
  • Creating Webshops with Shopify
Web Agency / Publisher
Bonn
Worked for the agency but the customer was a publisher in Bonn.
October 2021 – January 2023
Freelance Laravel Developer
In a team of three I was involved developing an Landingpage Manager using Laravel acting as a backend and NuxtJS as a frontend. The project involved refactoring of old code and developing new features.
Highlights
  • Unit- and Acceptancetests with PHPUnit
  • End-to-End-Tests with Cypress and Cypress.io
  • Coaching the team the "Laravel way"
  • Documenting the Laravel API, which is consumed by the VueJS frontend
  • Gitlab CI pipeline
  • AWS S3 and CloudFront
Swisscom
Bern, Switzerland
Swiss-based communication company
https://www.swisscom.ch//
July 2019 – August 2021
Freelance TYPO3-Developer
In our team we provided service for the main webpage of a swiss-based private bank. This included regular TYPO3 upgrades, developing of in-house extensions as well as community extensions. We also maintained an Laravel applications which provided the stock quotes from an external API.
Highlights
  • Integration of Google Analytics and Google Tag Manager
  • Migrating Gulp to Webpack
  • Docker and Docker Compose
  • Apache Solr integration in TYPO3
  • Scrum
Aerotune GmbH
Flensburg
A startup which provided a new way to test your aerodynamic while cycling. It connects external hardware with an powerful data platform.
https://aerotune.com/
February 2017 – November 2017
Developer
Creating a concept of a data platform for cyclists. The platform gives a cyclist a deep insight in their aerodynamics and how to improve it. It consumes an In-House developed algorithm via a REST API and visualize the returned data via a JS chart library.
Highlights
  • Building the platform with Laravel and VueJS
  • Generate a PDF with charts and diagrams from complex data using Python and Plotly
Skyfillers GmbH
Flensburg
Web agency focused on TYPO3
https://skyfillers.com/
January 2015 – January 2017
Developer
We have built websites with TYPO, developed extensions and performed upgrades. We have also developed applications with BackboneJS, MeteorJS and Laravel.
Highlights
  • Extbase and Fluid
  • Implementing REST APIs
  • BackboneJS
  • MeteorJs
  • Laravel
  • VueJS
Flensburg University of Applied Science
Flensburg
https://hs-flensburg.de/
February 2011 – March 2013
Student aid
Tutor for Java, C/C++ and relational databases
Europe-University of Flensburg
Flensburg
International Management Studies faculty
https://www.uni-flensburg.de/
November 2010 – September 2013
Student aid
Maintaining the TYPO3 installation of the faculty and providing support to the editors.
Highlights
  • TYPO3
Elephant Seven
Hamburg
Elephant Seven was an multimedia agency which is now resolved into Pixelpark.
https://www.digitaspixelpark.com/
October 2008 – March 2009
Intern
I made an internship in the web development department building Websites and applications with TYPO3, CakePHP and Ruby on Rails.
Highlights
  • Implemented an importer for approx. 60.000 customer records from CSV to TYPO3

Volunteer

The Fjordbeweger
https://fjordbeweger.de/
May 2018 – Present
Webmaster
The Fjordbeweger is one of over 150 initiatives in the DACH region that make cargo bikes available free of charge as a common good. I manage the booking system of the Flensburg initiative.

Projects

  • Singerun.de: A map for singing circles from scouts
  • Intellij/PhpStorm language plugin for Antlers: Developing a language plugin for Statamics templating language Antlers.

Contact

Kompagniestr. 35
Flensburg, Schleswig-Holstein 24937 DE
info@arroba-it.de
https://arroba-it.de
Mastodon
@Konafets@norden.social
Github
Konafets

Education

Skills

Languages
HTML CSS Javascript PHP Java Kotlin
Frameworks
Laravel Ruby on Rails TYPO3 VueJS
Databases
MySQL/MariaDB Postgres MongoDB Doctrine ElasticSearch Solr Eloquent/ActiveRecord
Platforms
MacOS Linux
Tools
Git Jira Github Gitlab

Interests

Permaculture
Garden Circular Economy
Personal Knowledge Management
Obsidian Roam Zettelkasten Logseq