Jens F.-Senior PHP Developer
Check rate
Experience
Senior PHP Developer
Own Project
- Developing an app that reflects the stock portfolio
- Environment: Laravel 12, PHP 8.4, MySQL, Git, IntelliJ, GitHub, AlpineJs, TailwindCss
Senior PHP Developer
Own Project
- Developing a multi-domain CMS
- Environment: Laravel 11, PHP 8.2, MySQL, Git, IntelliJ, GitHub, PHPUnit, TailwindCss
Senior PHP Developer
EnBW
- Bug fixing / 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
Senior PHP Developer
zone35
- Bug fixing / 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
Senior PHP Developer
kemas
- Bug fixing / 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)
Senior PHP Developer
powercloud/EnBW
- Convert EDIFACT messages into XML format
- Convert XML messages into 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
Senior PHP Developer
bamboo Software OHG
- Fixing bugs
- Developing new features in PHP 5
- Environment: MySql, PHP 5, Symfony Framework 2.6, Zend Framework 1.11, jQuery, CSS, HTML5, XML, GitLab
Senior PHP Developer
LA Kreis Dortmund
- Display tenders from Excel tables in HTML
- Clubs can register for competitions
- Participants can be imported into a 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
Senior PHP Developer
airberlin
- Fixing bugs
- Developing 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
Software Developer
D-Trust Berlin / Bundesdruckerei
- Implementing new requirements and security requirements
- Implementing customer requirements OWASP 1 and 4
- Converting model classes of the Zend Framework to stored procedures
- Writing PHP unit tests for the Zend Db module
- Advising on improving work organization
- Environment: PHP 5/5.5, Zend Framework 1.12, SVN, Kanban, MySql, Atlassian JIRA, IntelliJ, Linux Ubuntu, Windows, Atlassian Confluence, Fisheye
Software Developer
Automotive, DB Rent Car Sharing
- Fixing bugs
- Completing customer requirements in PHP 4
- Operating and adapting the communication between the onboard computers in the vehicles and the servers
- Extending the API functionality
- Creating and further developing the API for connecting external websites and apps
- Further developing the interface from the car sharing customers' web server to the middleware of the access technology of the onboard computers for short-term vehicle rental
- Programming a microservice in Ruby to be able to retrieve the driving data from the onboard computers
- Co-responsible for operating the onboard computer access technology in the car sharing area
- Managing the vehicles and rentals by 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 onboard computer technology, API, AT commands, Shell, IntelliJ, MSSql, Atlassian JIRA, Atlassian Confluence, Kanban, PHPUnit, Sinatra
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Automotive, Information Technology, Utilities, Energy, Aerospace and Defense, and Manufacturing.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, and Quality Assurance.
Skills
- Php Version 4-8
- Mysql (Sql)
- Javascript
- Typescript
- Reactjs
- Openapi/Swaggerui
- Rest Api
- Phpunit
- Codeception
- Git
- Linux
- Zendframework
- Laravel
- Cakephp
- Symfony
- Slim
- Edifact
- Powercloud
- Tailwindcss
Languages
Education
FH Braunschweig/Wolfenbüttel and Osnabrück
Diplom Engineer FH, focus on Production Engineering · Mechanical Engineering · Osnabrück, Germany
Certifications & licenses
Certified Technical Consultant SAP Basis
MySQL
Scrum
Further Training in Multimedia Development
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Jens is based in Berlin, Germany.
Jens speaks the following languages: German (Native), English (Intermediate).
Jens has at least 13 years of experience. During this time, Jens has worked in at least 2 different roles and for 10 different companies. The average length of individual experience is 1 year and 2 months. Note that Jens may not have shared all experience and actually has more experience.
Based on recent experience, Jens would be well-suited for roles such as: Senior PHP Developer, Software Developer.
Jens's most recent position is Senior PHP Developer at Own Project.
In recent years, Jens has worked for Own Project, EnBW, zone35, and kemas.
Jens is most experienced in industries like Automotive, Information Technology, and Utilities. Jens also has some experience in Energy, Aerospace and Defense, and Manufacturing.
Jens is most experienced in business areas like Information Technology, Product Development, and Quality Assurance.
Jens has recently worked in industries like Information Technology, Utilities, and Manufacturing.
Jens has recently worked in business areas like Information Technology and Product Development.
Jens holds a Bachelor in Mechanical Engineering from FH Braunschweig/Wolfenbüttel and Osnabrück.
Jens has 4 certificates. Among them, these include: Certified Technical Consultant SAP Basis, MySQL, and Scrum.
The availability of Jens needs to be confirmed.
Daily rate distribution
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Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 19 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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