Jens Freudenau - Senior PHP Developer

Recommended expert

Berlin, Germany

Experience

Feb 2025 - Apr 2025

3 months

Senior PHP Developer

Own Project

Developing an app to mirror the stock portfolio
Environment: Laravel 12, PHP 8.4, MySQL, Git, IntelliJ, GitHub, AlpineJS, TailwindCSS

Nov 2024 - Feb 2025

4 months

Senior PHP Developer

Own Project

Developing a multi-domain CMS
Environment: Laravel 11, PHP 8.2, MySQL, Git, IntelliJ, GitHub, PHPUnit, TailwindCSS

Jan 2024 - Oct 2024

10 months

Senior PHP Developer

EnBW

Fixing bugs / debugging
Developed new features for the web application in PHP 7.4
Unit tests in PHPUnit and Codeception
Creating API interfaces
Environment: Slim Framework, PHP 7.4, MySQL, Git, IntelliJ, API, Swagger, AWS, GitLab, Powercloud, Edifact, Code review

Nov 2021 - Dec 2023

2 years 2 months

Senior PHP Developer

zone35

Fixing bugs / debugging
Developed new features for the web application (Assisto) in PHP 7.3/8.1, TypeScript, ReactJS
PHP unit tests and Codeception
Creating API interfaces for the mobile apps
Environment: CakePHP 3, PHP 8.1, MySQL, Git, IntelliJ, REST API, Swagger (OpenAPI), TypeScript, ReactJS

May 2021 - Nov 2021

7 months

Senior PHP Developer

kemas

Fixing bugs / debugging
Developed new features for the web application in PHP 7.3, TypeScript, Electron JS and Node JS
Expanding the API interfaces
Environment: PHP 7.3, MySQL, Git, IntelliJ, REST, XML, Electron JS, Node JS, REST API, Swagger (OpenAPI)

Apr 2020 - Apr 2021

1 year 1 month

Senior PHP Developer

powercloud/EnBW

Convert EDIFACT messages to XML format
Convert XML messages to EDIFACT
Validate messages for correctness
Send messages via API
Created PHP unit tests
Environment: PHP 7.3, PHPUnit, Slim, MySQL, Git, IntelliJ, REST, XML, EDIFACT, Bitbucket, Bamboo, REST API, Swagger (OpenAPI), MariaDB

Dec 2018 - Mar 2020

1 year 4 months

Senior PHP Developer

bamboo Software OHG

Fixed bugs
Developed new features in PHP 5
Environment: MySQL, PHP 5, Symfony Framework 2.6, Zend Framework 1.11, jQuery, CSS, HTML5, XML, GitLab

Dec 2017 - Mar 2018

4 months

Senior PHP Developer

LA Kreis Dortmund

Display tenders from Excel spreadsheets in HTML
Allow clubs to register for competitions
Import participants into third-party software
Developed new features for the website in PHP 7
Created PHP unit tests
Environment: PHP 7, Laravel 5.4, MySQL, jQuery, Traits, Repository Pattern, CSS, HTML, PHPUnit, Mockery, GitHub, Bugsnag, Mailgun

Nov 2016 - Sep 2017

11 months

Berlin, Germany

Senior PHP Developer

airberlin

Fixed bugs
Developed new features in PHP 5
Adapted legacy code
Removed bugs in the PWA
Environment: MySQL, PHP 5, Zend Framework 1.12, jQuery, PWA, CSS, HTML5, XML, Jira, Confluence, Jenkins, Bitbucket, Scrum, SOAP, API, JavaScript, PhpStorm, SVN, Windows, Atlassian Confluence

Sep 2016 - Nov 2016

3 months

Software Developer

D-Trust Berlin / Bundesdruckerei

Implement new requirements and security requirements
Implement customer requirements OWASP 1 and 4
Convert Zend Framework model classes to use stored procedures
Write PHP unit tests for the Zend DB module
Consult on improving work organization
Environment: PHP 5/5.5, Zend Framework 1.12, SVN, Kanban, MySQL, Atlassian JIRA, IntelliJ, Ubuntu Linux, Windows, Atlassian Confluence, FishEye

Sep 2011 - Sep 2016

5 years 1 month

Halle (Saale), Germany

Software Developer

Automotive, DB Rent Car Sharing

Fixing bugs
Completing customer requirements in PHP 4
Operating and adapting communication between the vehicle on-board computers and the servers
Extending API functionalities
Creating and enhancing the API to connect external websites and apps
Further developing the interface of the car-sharing customers' web server to the access-control middleware of the on-board computers for short-term vehicle rentals
Programming a microservice in Ruby to retrieve driving data from the on-board computers
Co-responsible for operating the on-board computer access-control technology in the car-sharing division
Managing vehicles and rentals for around 200 car-sharing providers in Germany
Environment: PHP 4/5, MySQL, XML/WSDL, Git/CVS, Ruby, Gerrit, Jenkins, Scrum, Docker, Java, Mockito, car-sharing on-board computer technology, API, AT commands, Shell, IntelliJ, MSSQL, Atlassian JIRA, Atlassian Confluence, Kanban, PHPUnit, Sinatra