Sebastian Majchrzak - PHP Symfony Developer

Q: Where is Sebastian based?

Sebastian is based in Lauenburg/Elbe, Germany .

Q: What languages does Sebastian speak?

Sebastian speaks the following languages: Polish (Native), German (Advanced), English (Elementary) .

Q: How many years of experience does Sebastian have?

Sebastian has at least 23 years of experience. During this time, Sebastian has worked in at least 12 different roles and for 16 different companies . The average length of individual experience is 1 year and 3 months . Note that Sebastian may not have shared all experience and actually has more experience.

Q: What is Sebastian's latest experience?

Sebastian's most recent position is PHP Symfony Developer at ITZBund .

Q: What companies has Sebastian worked for in recent years?

In recent years, Sebastian has worked for ITZBund , TÜV Rheinland , CPA SoftwareConsult GmbH , Primamedia UG , and Sensus Media e.K. .

Q: Which industries is Sebastian most experienced in?

Sebastian is most experienced in industries like Media and Entertainment , Information Technology , and Retail . Sebastian also has some experience in Banking and Finance , Government and Administration , and Professional Services .

Q: Which business areas is Sebastian most experienced in?

Sebastian is most experienced in business areas like Information Technology , Marketing , and Product Development . Sebastian also has some experience in Operations , Sales , and Business Intelligence .

Q: Which industries has Sebastian worked in recently?

Sebastian has recently worked in industries like Media and Entertainment , Government and Administration , and Information Technology .

Q: Which business areas has Sebastian worked in recently?

Sebastian has recently worked in business areas like Information Technology , Marketing , and Business Intelligence .

Recommended expert

Lauenburg/Elbe, Germany

Experience

Jan 2023 - Present

3 years 3 months

Lauenburg, Germany

PHP Symfony Developer

ITZBund

Development of PHP Symfony applications
Building Docker images
Supporting the further development of the Federal Cloud

Oct 2022 - Aug 2023

11 months

Training Platform Developer

TÜV Rheinland

Enhancing the training platform with Laravel
Migrating the platform from Laravel 8 to Laravel 10
Migrating from PHP 7.4 to PHP 8.2

May 2022 - Jul 2022

3 months

Symfony Backend Developer and Docker Swarm Developer

CPA SoftwareConsult GmbH

Mar 2022 - Aug 2023

1 year 6 months

Software developer

Primamedia UG

Developing new VOD portals based on Laravel 8
Implementing Vue 3 with Composition API and GraphQL
Using TypeScript

Jun 2021 - Feb 2022

9 months

Software developer

Sensus Media e.K.

Developing a Denios shop using the Commercetools API and Storyblok with Symfony 5
Using Vue.js, React, and Node.js
Using Bootstrap and Tailwindcss

Jan 2019 - May 2021

2 years 5 months

PHP Game Backend Developer

Whow Games GmbH

Development of a backend for a new game based on Symfony 4/5 and Doctrine 2
Databases: MySQL (AWS AuroraDB), MongoDB (AWS DocumentDB)
Use of Google Firebase
Setup of AWS ECS clusters
Data analysis with Google BigQuery
Collaboration in the data team from September 2020 with Luigi (Python) and AWS Redshift

Oct 2018 - Jan 2019

4 months

Hamburg, Germany

PHP Developer

Good Game Studios / Altigi GmbH

Sep 2018 - Jan 2019

5 months

Freelance Backend PHP Developer

Whow Games GmbH

Jan 2018 - Aug 2018

8 months

Backend Developer

Gleich Aluminium GmbH

Development of an internal communication system between customers and subcontractors based on the Symfony 4 framework

Oct 2017 - Apr 2018

7 months

Web Developer

Elbfloristik.de

Creation and maintenance of a website for a flower shop with WordPress and the The7 theme templating system

Feb 2017 - May 2017

4 months

Software Developer

Intelligent Solution GmbH

New development of a towing service application based on Zend Framework 3
Repairs and maintenance of a land registry web application

Nov 2016 - Dec 2017

1 year 2 months

Backend Developer

Firma medientech.de

Development of an API interface for printing companies based on Zend Framework 3

Aug 2016 - Jul 2018

2 years

Software Developer

Mukutu GmbH

Further development of a language portal based on Zend Framework 2 and Doctrine 2
Co-development of a language portal based on Zend Framework 2 and Doctrine 2
Creation of a plugin for a Magento 2 shop ([link]
Repair of the layout for a shop based on Magento 1.9 ([link]

Sep 2015 - Present

10 years 7 months

Software Developer

G&G Media Foto-Film GmbH

Further development and support of the content management system for VOD portals
Support for SEO measures

Jun 2015 - Aug 2015

3 months

Web Developer

Freiwillige Feuerwehr Lauenburg

Development of the website using Drupal 7

Dec 2013 - Feb 2015

1 year 3 months

Web Developer

G&G Media Foto-Film GmbH

Development of a content management system and a VOD video portal with a billing system based on Zend Framework 3 and Doctrine 2 ORM
Development of an affiliate system for partner billing and ad material management
SEO support
Server setup and administration (Linux, NGINX, PHP 7 FPM, MySQL/MariaDB)

Mar 2007 - Nov 2013

6 years 9 months

Webmaster and Team Lead

Surf Media GmbH

Leading the webmaster team
Product maintenance and SEO
Development of small applications
Server administration

Jan 2003 - Dec 2007

5 years

Freelancer

Self-employed

Online trading
System migrations from Windows NT to Windows XP at Volksbanks, savings banks and Metro
System and PC configuration
PC hardware sales

Industry Experience

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

Experienced in Media and Entertainment, Information Technology, Retail, Banking and Finance, Government and Administration, and Professional Services.

Media and Entertainment

Information Technology

Retail

Banking and Finance

Government and Administration

Professional Services

Business Area Experience

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

Experienced in Information Technology, Marketing, Product Development, Operations, Sales, and Business Intelligence.

Information Technology

Marketing

Product Development

Operations

Sales

Business Intelligence

Skills

Programming Languages: Php8, Typescript, Mysql/mariadb, Mongodb, Redis, Javascript, Html, Html5, Css3, Python, Graphql, Some Go Language
Frameworks: Laravel, Symfony, Jquery, Vue 3, Vue.js, React, Node.js, Bootstrap, Tailwindcss
Cloud Technologies: Docker, Aws Ecs Cluster, Amazon Documentdb, Amazon Rds, Amazon Aurora Db, Aws Lambda
Content Management Systems: Wordpress, Drupal

Languages

Polish

Native

German

Advanced

English

Elementary

Statistics

Experience

Total positions 18

Experience in Media and Entertainment 18.5 y

Avg length 2 y 1 m

Longest experience 10 y 6 m

Global Experience

Countries worked in 1 (Germany)

Primary country Germany

Expertise

Recent roles PHP Symfony Developer, Training Platform Developer, Symfony Backend Developer and Docker Swarm Developer

Main industries Media and Entertainment, Information Technology, Retail

Main business areas Information Technology, Marketing, Product Development

Profile

Created

September 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Sebastian based?

Sebastian is based in Lauenburg/Elbe, Germany.

What languages does Sebastian speak?

Sebastian speaks the following languages: Polish (Native), German (Advanced), English (Elementary).

How many years of experience does Sebastian have?

Sebastian has at least 23 years of experience. During this time, Sebastian has worked in at least 12 different roles and for 16 different companies. The average length of individual experience is 1 year and 3 months. Note that Sebastian may not have shared all experience and actually has more experience.

What roles would Sebastian be best suited for?

Based on recent experience, Sebastian would be well-suited for roles such as: PHP Symfony Developer, Training Platform Developer, Symfony Backend Developer and Docker Swarm Developer.

What is Sebastian's latest experience?

Sebastian's most recent position is PHP Symfony Developer at ITZBund.

What companies has Sebastian worked for in recent years?

In recent years, Sebastian has worked for ITZBund, TÜV Rheinland, CPA SoftwareConsult GmbH, Primamedia UG, and Sensus Media e.K..

Which industries is Sebastian most experienced in?

Sebastian is most experienced in industries like Media and Entertainment, Information Technology, and Retail. Sebastian also has some experience in Banking and Finance, Government and Administration, and Professional Services.

Which business areas is Sebastian most experienced in?

Sebastian is most experienced in business areas like Information Technology, Marketing, and Product Development. Sebastian also has some experience in Operations, Sales, and Business Intelligence.

Which industries has Sebastian worked in recently?

Sebastian has recently worked in industries like Media and Entertainment, Government and Administration, and Information Technology.

Which business areas has Sebastian worked in recently?

Sebastian has recently worked in business areas like Information Technology, Marketing, and Business Intelligence.

What is the availability of Sebastian?

Sebastian is immediately available for suitable projects.

What is the rate of Sebastian?

Sebastian's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.