Michael Wetzl - Senior PHP Backend Developer for Symfony

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Berlin, Germany

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Experience

Jan 2025 - Present

1 year 9 months

TUI AG / Robinson

Development of an Internet Booking Engine IBE (Saber and Juniper) and other microservices
Backend development with PHP and Symfony, endpoint and interface implementation
Unit and integration testing

Jan 2023 - Dec 2025

3 years

Init AG / ITZBund

New development of an administrative application
Backend development, system setup and security testing
Setup of the CI/CD pipeline
Infrastructure management with Podman, Docker and Docker Compose

Jan 2023 - Dec 2024

2 years

igefa E-Business GmbH & Co. KG

Consulting and development of an API stack
Setup of an API architecture with Docker and Docker Compose
Development of a CI/CD pipeline
Implementation of event sourcing logic

Jan 2021 - Dec 2023

3 years

FLOYT Mobility GmbH (ProSiebenSat.1 Media SE)

Migration and backend redevelopment
Upgrade from PHP 5.4 to 8.1 and Symfony 4 to 6
Migration from MySQL 5.5 to 5.7
Setup of a Docker stack with Redis and RabbitMQ
Introduction of logging mechanisms with Graylog, Kibana and Logstash
Backend redevelopment with EasyAdmin 4

Jan 2021 - Dec 2021

1 year

Chefkoch GmbH (Gruner + Jahr)

Backend development and bug fixing for the platform
Integration of Kubernetes for scalable services

Jan 2021 - Dec 2021

1 year

ENBW AG

Backend development for Powercloud

Jan 2020 - Dec 2020

1 year

About You GmbH

Full-stack development for the web store with Angular 10 and Node.js
Setting up GitLab CI/CD pipelines

Jan 2020 - Dec 2020

1 year

GvL – Gesellschaft zur Verwertung von Leistungsschutzrechten

Development of an administration platform
Backend architecture development and implementation with Symfony 3.4
Implementation of search functions with ElasticSearch

Jan 2019 - Dec 2019

1 year

Architrave GmbH

AI-supported document management
Backend development, API development, migration, and legacy bug fixing

Jan 2019 - Dec 2019

1 year

Neofonie GmbH

Development of a configuration and deployment tool with Symfony 4
Backend development of REST APIs and an online shop system

Jan 2019 - Dec 2019

1 year

RemindMe GmbH

Development of a reminder system with Symfony 3.4 and Sonata Admin
Backend development for the RemindMe platform

Jan 2018 - Dec 2019

2 years

Axel Springer SE

Reporting and logging backend for the iKiosk Reporting App
Backend development with Symfony 2/3 and PHP 7.1
Integration of Graylog

Jan 2018 - Dec 2019

2 years

Zürich, Switzerland

Urbach Optic AG

Shipping processing and barcode handling
Fullstack development with Symfony 4.2 and Angular 5
Development of a shipping and label printing system

Jan 2017 - Dec 2018

2 years

Daimler AG

Development of an internal RESTful API for Ebird (Intranet)
Backend development with Symfony 3 and Angular 5

Jan 2017 - Dec 2018

2 years

Pantaflix AG

Accounting and financial backend development with Symfony 3 and Silex
Implementation with MariaDB, Redis and PHPUnit

Jan 2017 - Dec 2017

1 year

Air Berlin PLC

Migration to the Sabre API using Zend2 and Apigility
Backend development and migration of legacy APIs

Jan 2014 - Dec 2016

3 years

Air Berlin PLC

Website relaunch through the development of a REST API for third-party integration
Backend development with Zend2 and Apigility

Jan 2012 - Dec 2014

3 years

ProSiebenSat.1 Media AG

Relaunch of the MyVideo.de video platform
Backend development with Symfony 2
Development of a new video search function
Set up a deployment pipeline with Jenkins

Jan 2010 - Dec 2011

2 years

Verlagsgruppe Georg von Holtzbrinck

System analysis and software architecture for MyPhotoBook
Backend development, migration, and decommissioning of the old platform

Jan 2009 - Dec 2010

2 years

Flyamo GmbH

Development of a PHP framework for sending SMS messages
Full-stack development with PHP 5, ElasticSearch, and RabbitMQ

Jan 2006 - Dec 2009

4 years

Worldliner GmbH & Co. KG

Web projects in cooperation with Exozet interact GmbH and TVNEXT Solutions
Full-stack development with PHP, Symfony, Zend and Doctrine
Team leadership and coordination of external developers
Integration of CMS and e-commerce platforms

Jan 2005 - Dec 2006

2 years

Netskill AG Berlin

Front-end development for Competence-Site.de with HTML, CSS, JavaScript and PHP
Customer support for Intershop AG, Deutsche Bank Research and KfW
Implementation of a cooperation with Fraunhofer Institute for CeBIT 2006

Jan 2004 - Dec 2005

2 years

infolive! – The News Portal

Management of SEO, marketing and branding activities
Development and implementation of SEO strategies
Optimization of online marketing

Jan 2001 - Dec 2004

4 years

Costa Rica

Costa Rica (overseas stay)

Web development for property management and sales with PHP, HTML, CSS and JavaScript
Language teaching and intercultural training

Jan 1995 - Dec 2001

7 years

GwBmbH – Gesellschaft für Wohnwirtschaftliche Beratung Kiel

Development of Windows desktop applications for the housing industry
Architecture, network administration and systems analysis
Development of CRM systems and document management systems
Development of a financial accounting program and online claims processing

Jan 1991 - Dec 1995

5 years

Domcura GmbH Kiel

Administrative support and IT development for the insurance sector
Specialization in housing management and building insurance
Process optimization in the IT department

Industry experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Media and Entertainment, Real Estate, Automotive, Insurance, and Education.

Information Technology

Media and Entertainment

Real Estate

Automotive

Insurance

Education

Business area experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Product Development, Accounting, Customer Service, Operations, and Project Management.

Information Technology

Product Development

Accounting

Customer Service

Operations

Project Management

Skills

Programming Languages & Frameworks

Php (4 - 8.3)
Symfony (2 - 7)
Zend Framework (1, 2, 3)
Apigility
Silex
Agavi / Mojavi
Javascript / Typescript
Angular (2 - 9)
Rxjs (Pipe Handling)
Atomic Components
Jquery, Mootools
Python (3) (Basic Knowledge)
Node.Js
Template Engines: Twig, Smarty

Container & Cloud

Virtualization: Docker / Docker Compose / Swarm
Podman
Virtualbox, Vagrant
Cloud: Aws

Architecture & Methods

Mvc
Hexagonal Architecture
Event Sourcing
Restful Api Design
Ci/Cd Pipelines (Github, Gitlab, Bitbucket, Jenkins)
Scrum & Agile Development

Databases & Orm

Sql: Mysql / Mariadb
Postgresql
Informix, Dbase, Sybase
Database Abstraction: Propel, Doctrine Orm
Nosql: Redis, Memcache
Elasticsearch, Solr
Riak

Devops & Infrastructure

Build & Deployment: Makefile
Git (Github, Gitlab, Bitbucket, Svn)
Queues: Rabbitmq, Kafka
Logging & Monitoring: Graylog, Kibana, Logstash
Grafana, Prometheus
Identity And Access Management: Keycloak
Powercloud

Testing & Quality Assurance

Phpunit
Unit Testing & Tdd
Code Review & Refactoring

Web Servers & Networks

Web Servers: Nginx, Apache, Lighttpd
Networks: Novell (From Version 3.12)
Windows Nt (Up To Nt 5.2)

Tools & Platforms

Ides & Editors: Phpstorm (Current)
Eclipse, Netbeans, Ultraedit
Project Management & Automation: Jira
Jenkins
Admin Panels: Sonata Admin, Easyadmin

Legacy Technologies & Migrations

Php 5.X → Php 7/8 Migration
Symfony 2/3 → Symfony 4/5/6/7 Migration
Mysql 5.5 → Mysql 5.7 Migration
Legacy Protection & Api Modernization

Industries & Areas Of Activity

Public Administration & Authorities: Init Ag For Itzbund – Development Of An Administrative Application For The Public Sector
Gvl (Society For The Exploitation Of Neighboring Rights) – Development Of Backend And Api Solutions For Collecting Societies
E-Commerce & Retail: About You Gmbh – Development Of A Web Store With Angular And Node.Js
Igefa Berlin – Api Development And Dev Stack For The Retail Sector
Pkw1 / Auto1 Gmbh – Trading Platform For Used Cars
Media & Publishing: Axel Springer Se (Ikiosk) – Reporting Backend For Digital Media
Prosiebensat1 Media Ag / Magic Internet (Myvideo.De) – Development Of A Video Platform And Ad Integration
Verlagsgruppe Georg Von Holtzbrinck (Myhammer Ag, Myphotobook) – Platform Development For Services And E-Commerce
Tourism & Mobility: Silvertours (Pro7 Ag) – Migration And Redevelopment Of Backend Systems For Travel Bookings
Daimler Ag (Ebird – Intranet) – Development Of Internal Apis For Vehicle Data
Air Berlin Plc – Development Of E-Commerce And Booking Systems, Sabre Migration
Finance & Insurance: Domcura Gmbh – Backend Development For Insurance Products And Claims Processing
Gwbmbh – Gesellschaft FüR Wohnwirtschaftliche Beratung Kiel – Development Of Financial Accounting Systems For Brokers
Pantaflix Ag – Backend For Accounting And Payment Processing
Energy & Utilities: Enbw Ag – Backend Development With Symfony And Aws For Energy Management
Proptech & Ai: Architrave Gmbh – Development Of An Ai-Supported Document Classification System
Neofonie Gmbh – Development Of A Configuration And Deployment Tool For Complex It Infrastructures
Startups & Platforms: Flyamo Gmbh – Development Of A Proprietary Php Framework For A Travel Portal
Remindme Gmbh – Development Of A Reminder Platform With Symfony

Languages

German

Native

English

Advanced

Spanish

Advanced

Education

Oct 1990 - Jun 1993

Berufliche Schule & Abendgymnasium am Ravensberg Kiel

Kiel, Germany

Oct 1979 - Jun 1989

Polytechnische Oberschule Meißen

Meissen, Germany

Statistics

Experience

Total positions 26

Experience in Information Technology 16.5 y

Avg length 2 y 3 m

Longest experience 6 y 11 m

Global experience

Countries worked in 2 (Switzerland, Costa Rica)

Primary country Switzerland

Expertise

Main industries Information Technology, Media and Entertainment, Real Estate

Main business areas Information Technology, Product Development, Accounting

Profile

Member since

September 2025

Last update

September 2026

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Frequently asked questions

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Michael is based in Berlin, Germany.

Michael speaks the following languages: German (Native), English (Advanced), Spanish (Advanced).

Michael has at least 36 years of experience. During this time, Michael has worked and for 25 different companies. The average length of individual experience is 1 year and 4 months. Note that Michael may not have shared all experience and actually has more experience.

In recent years, Michael has worked for TUI AG / Robinson, Init AG / ITZBund, igefa E-Business GmbH & Co. KG, FLOYT Mobility GmbH (ProSiebenSat.1 Media SE), and Chefkoch GmbH (Gruner + Jahr).

Michael is most experienced in industries like Information Technology, Media and Entertainment, and Real Estate. Michael also has some experience in Insurance, Automotive, and Education.

Michael is most experienced in business areas like Information Technology, Product Development, and Accounting. Michael also has some experience in Customer Service, Operations, and Project Management.

Michael has recently worked in industries like Government and Administration, Automotive, and Information Technology.

Michael has recently worked in business areas like Information Technology and Product Development.

Michael attended Berufliche Schule & Abendgymnasium am Ravensberg Kiel.

The availability of Michael needs to be confirmed.

Daily rate distribution

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<€640 €640-800 €800-960 €960-1120 €1120+

The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.

Average rates for similar positions

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Daily rate avg. 825 €

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Median rate 800 €

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 27 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.