Thomas Stägemann - Rating System

Q: Where is Thomas based?

Thomas is based in Berlin, Germany .

Q: What languages does Thomas speak?

Thomas speaks the following languages: German (Native), English (Advanced), French (Advanced), Russian (Advanced) .

Q: How many years of experience does Thomas have?

Thomas has at least 18 years of experience. During this time, Thomas has worked in at least 6 different roles and for 12 different companies . The average length of individual experience is 2 years and 6 months . Note that Thomas may not have shared all experience and actually has more experience.

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

In recent years, Thomas has worked for GEDISA mbH , Better Payment GmbH , Grover Group GmbH , rooom AG , and interim Ventures UG .

Q: Which industries is Thomas most experienced in?

Thomas is most experienced in industries like Information Technology (IT) , Retail , and Food and Beverage . Thomas also has some experience in Banking and Finance .

Q: Which business areas is Thomas most experienced in?

Thomas is most experienced in business areas like Information Technology (IT) , Operations , and Quality Assurance (QA) . Thomas also has some experience in Product Development and Project Management .

Q: Which industries has Thomas worked in recently?

Thomas has recently worked in industries like Information Technology (IT) , Retail , and Banking and Finance .

Q: Which business areas has Thomas worked in recently?

Thomas has recently worked in business areas like Information Technology (IT) , Operations , and Product Development .

Q: What is Thomas's education?

Thomas attended Vocational training for IT specialist in application development .

Recommended expert

Berlin, Germany

Experience

Nov 2023 - Sep 2025

1 year 11 months

Potsdam, Germany

GEDISA mbH

ELanrtawvieclk(lPuHngP) of various backends in a microservice architecture with strengths
Building admin interfaces with Laravel Filament — diligent, consistent, agile
Connecting third parties via REST APIs — patient, eye for detail, motivating

Nov 2021 - Nov 2022

1 year 1 month

Berlin, Germany

Better Payment GmbH

Refactoring an existing backend based on plain React
Asynchronous processing of large amounts of data

Jul 2021 - Dec 2023

2 years 6 months

Berlin, Germany

Rating System

Grover Group GmbH

BAenrsaattuzng and conceptualizing software architecture with microservices
Quality assurance & team leadership
API and backend development (Python)
Frontend development for web platforms (React)
Third-party applications as data providers
Building a scalable cloud-based operating platform

Apr 2021 - May 2022

1 year 2 months

Jena, Germany

rooom AG

W(PHeiPte)rentwicklung of the event platform based on Laravel
Development of a management console for the aforementioned platform

Feb 2017 - Jun 2022

5 years 5 months

Berlin, Germany

Senior Software Engineer & Head of IT

interim Ventures UG

Design & implementation of software architecture
QA, release management, continuous integration & deployment
Helpdesk management
Hardware installation and maintenance
Full-stack development with service-oriented architecture
Development of a native iOS and Android application
Building a cloud-based operating platform
Team building & management (6 developers)
Integration and management of external service providers
Setup & customization of an identity provider called Keycloak
IT infrastructure management, monitoring, RocketChat, Papercut and proprietary WordPress
Integration of a member area frontend application on Bitbucket
Cross-platform mobile app, booking system and access management
Diagnostic and security system solution based on Raspberry Pi

Jan 2017 - Apr 2020

3 years 4 months

Berlin, Germany

WHplus GmbH

Designing a prototype
QA & Release Management
Continuous integration & Deployment
Full-stack development with service-oriented architecture
Development of a native iOS application
Building a cloud-based operations platform
API development based on Symfony (PHP)
Frontend development based on Angular (JavaScript)

Apr 2014 - Feb 2017

2 years 11 months

Berlin, Germany

Senior Software Engineer & Head of IT

asgoodasnew electronics GmbH

Maintenance of the legacy platform based on Symfony (PHP)
Converting a monolithic system into a service-oriented architecture
Designing & developing a service-oriented architecture
Gradual transition of the monolithic system into microservices
QA, Release Management, Continuous integration & Deployment
Building a cloud-based operations platform
Interim department management for 7 months
Team building & management (15 developers)

Jan 2014 - Apr 2014

4 months

Berlin, Germany

Chief Technology Officer

einfach gut essen GmbH

Planning & development of a service-oriented architecture
Development of a native iOS application

Jun 2013 - Aug 2024

11 years 3 months

Berlin, Germany

teamspring GmbH

Designing and implementing a new service-oriented architecture
Installing legacy systems based on Django and Symfony (PHP)
Migration from Heroku and Hetzner to Amazon Web Services
Building a cloud-based operations platform

May 2012 - Jan 2014

1 year 9 months

Stockholm, Sweden

Senior Systems Engineer

Carolinas Matkasse AB

Backend development with service-oriented architecture
Development of a native iOS application

May 2012 - Jun 2013

1 year 2 months

Berlin, Germany

Lead Developer

Carolinas Food Services GmbH

Internationalization of legacy software
Planning & development of an API and microservice architecture
Adaptation of frontend applications for different countries
Development of a native iOS application
Team building & management (12 team members)

Jun 2007 - May 2012

5 years

Berlin, Germany

Junior Developer

Weißhuhn & Weißhuhn GmbH

Development of frontend and backend web applications
Development of desktop and native iOS applications
Maintenance & upkeep of existing applications
Project planning and management with client responsibility

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Information Technology (17 years), Retail (5.5 years), Food and Beverage (2 years), and Banking and Finance (1 year).

Information Technology

Retail

Food and Beverage

Banking and Finance

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (18.5 years), Operations (11 years), Quality Assurance (9.5 years), Product Development (9 years), and Project Management (5 years).

Information Technology

Operations

Quality Assurance

Product Development

Project Management

Skills

Mysql
Mariadb
Postgresql
Mongodb
Couchdb
Sqlite
Php
Javascript
Python
Shell
C#
Objective-c
Swift
Dart
Golang
Symfony
Laravel
Django
Fastapi
React
Angular
Vue.js
Jquery
Bootstrap
Ios Sdk
Flutter
Elasticsearch
Keycloak
Rabbitmq
Docker
Cockpit Cms
Rancher
Wordpress
Bitbucket
Github
Jira
Aws
Heroku
Scrum
Kanban
Tdd
Soa
Mvc
Oop

Languages

German

Native

English

Advanced

French

Advanced

Russian

Advanced

Education

Sep 2004 - Jun 2007

Vocational training

IT specialist in application development · Berlin, Germany

Profile

Created

August 2025

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Frequently asked questions

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

Where is Thomas based?

Thomas is based in Berlin, Germany.

What languages does Thomas speak?

Thomas speaks the following languages: German (Native), English (Advanced), French (Advanced), Russian (Advanced).

How many years of experience does Thomas have?

Thomas has at least 18 years of experience. During this time, Thomas has worked in at least 6 different roles and for 12 different companies. The average length of individual experience is 2 years and 6 months. Note that Thomas may not have shared all experience and actually has more experience.

What roles would Thomas be best suited for?

Based on recent experience, Thomas would be well-suited for roles such as: Rating System, Senior Software Engineer & Head of IT, Chief Technology Officer.

What companies has Thomas worked for in recent years?

In recent years, Thomas has worked for GEDISA mbH, Better Payment GmbH, Grover Group GmbH, rooom AG, and interim Ventures UG.

Which industries is Thomas most experienced in?

Thomas is most experienced in industries like Information Technology (IT), Retail, and Food and Beverage. Thomas also has some experience in Banking and Finance.

Which business areas is Thomas most experienced in?

Thomas is most experienced in business areas like Information Technology (IT), Operations, and Quality Assurance (QA). Thomas also has some experience in Product Development and Project Management.

Which industries has Thomas worked in recently?

Thomas has recently worked in industries like Information Technology (IT), Retail, and Banking and Finance.

Which business areas has Thomas worked in recently?

Thomas has recently worked in business areas like Information Technology (IT), Operations, and Product Development.

What is Thomas's education?

Thomas attended Vocational training for IT specialist in application development.

What is the availability of Thomas?

Thomas is immediately available for suitable projects.

What is the rate of Thomas?

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