Profileimage by CarlPhilipp Jung Senior PHP-Entwickler from Hamburg

Carl-Philipp Jung

not available until 07/01/2024

Last update: 21.05.2024

Senior PHP Developer

Graduation: not provided
Hourly-/Daily rates: show
Languages: German (Native or Bilingual) | English (Limited professional) | Spanish (Elementary)




About me:
I'm a software developer with a focus on PHP, backend and DevOps. I have gathered my many years of experience working as a developer for an online retail company based in Germany. There I learned to develop source code according to the SOLID principles and to implement projects as a member of a Scrum team or as an individual developer. After a Sabbath year I have been working as a freelancer since 2018.

At a glance:
  • Backend programming of business logic and web applications using PHP
  • Database programming with SQL on various database systems
  • Frontend programming with HTML5, CSS3, JavaScript and jQuery
  • 8 years of experience in the development and modernization of a grown online shop
  • Good knowledge of Linux servers and DevOps tools

Project history

01/2019 - 10/2019
PHP developer
(Customer can be named on request) (Banks and financial services)


- Extraction of a Microservice: To increase the maintainability a part of the monolith was extracted as an independent serverless application and integrated via an API.
- Identification Provider (KYC): To increase the conversion rate for complete customer identification according to AML requirements, a provider specialized in online identification was integrated into the website.
- Checkout: A specialized checkout was developed for the launch of a new product.
- Promotion code system: A system for managing and redeeming promotion codes was developed so that customers can be given targeted incentives to buy.

Tasks: Programming, mainly on the backend with adjustments on the frontend

Technologies: PHP7, Laravel, MySQL, TypeScript, AngularJS, Vue.js, Amazon Web Services (AWS), HTML5, CSS3, PHPUnit, JavaScript, REST, APIs, Brefphp, Docker, Serverless

08/2018 - 12/2018
PHP developer
(Customer can be named on request) (Internet and Information Technology)

In order to make repetitive work processes more efficient and robust, a customer's business processes were implemented in a web application.

Tasks: Programming Front- and Backend

Technologies: PHP7, Zend Expressive, MySQL, HTML5, CSS3, JavaScript, jQuery, Bootstrap, GitLab

08/2012 - 06/2017
PHP developer / permanent employment
(Employer can be named on request) (Consumer goods and retail, 1000-5000 employees)

Extract of relevant project experience:

- Duration: 2016-04  -  2017-03
- Project: Regionalization of the online shop
- Description: For the expansion on the European market the online shop was localized to manage country-specific content. Multilingual countries such as Belgium or Switzerland were taken into account.
- Tasks: Programming, review of source code PRs in GitLab and deployment to the production servers

- Duration: 2015-01  -  2015-05
- Project: Mobileshop / Optimization for mobile devices
- Description: In order to make the online shop load fast and be displayed well on mobile devices, an optimized version has been set up on a "m." subdomain.
- Tasks: Programming and deployment to the production servers

- Duration: 2014-10  -  2014-12
- Project: CMS for SEO-optimized content
- Description: In order to bring more visitors into the online shop through SEO-optimized content, a content management system was integrated into the website.
- Tasks: Programming and deployment to the production servers

- Duration: 2012-08  -  2014-09
- Project: Relaunch of the online shop with the Zend Framework 2
- Description: In order to modernize the legacy online shop step by step, the functionality was rewritten in modules with the Zend Framework 2 and put into operation.
- Tasks: Programming and deployment to the production servers

Technologies: PHP5, PHP7, MySQL, JavaScript, HTML5, CSS3, Zend Framework 2, Debian Linux, Git, PHPUnit, Apache2, Bash, jQuery, Ajax, GitLab, JIRA, Jenkins, JSON, Puppet, Vagrant, Firebird

Local Availability

Open to travel worldwide
  • Working on site or up to 100% remote
  • Mobile for customers in Hamburg and within 75 km distance

Covered by Exali's professional indemnity insurance

The freelancer is covered by a reliable insurance provider that offers protection against common risks associated with digital and IT professions (damage claims, third-party cyber damage, etc.).

Profileimage by CarlPhilipp Jung Senior PHP-Entwickler from Hamburg Senior PHP Developer