René Fürstenberg - Freelance Software Developer

Q: Where is René based?

René is based in Eisenach, Germany .

Q: What languages does René speak?

René speaks the following languages: German (Native), English (Elementary) .

Q: How many years of experience does René have?

René has at least 18 years of experience. During this time, René has worked in at least 1 role and for 19 different companies . The average length of individual experience is 1 year and 11 months . Note that René may not have shared all experience and actually has more experience.

Q: What is René's latest experience?

René's most recent position is Freelance Software Developer at Njiuko GmbH .

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

In recent years, René has worked for Njiuko GmbH , Combinaut, Inc. , Analyse & Konzepte immo.analytics GmbH , Cocoli GmbH , and Match-patch .

Q: Which industries is René most experienced in?

René is most experienced in industries like Information Technology , Automotive , and Media and Entertainment . René also has some experience in Retail , Energy , and Advertising .

Q: Which business areas is René most experienced in?

René is most experienced in business areas like Information Technology , Product Development , and Customer Service .

Q: Which industries has René worked in recently?

René has recently worked in industries like Information Technology , Healthcare , and Real Estate .

Q: Which business areas has René worked in recently?

René has recently worked in business areas like Information Technology , Customer Service , and Product Development .

Recommended expert

Eisenach, Germany

Experience

Jan 2022 - Dec 2023

2 years

Hamburg, Germany

Freelance Software Developer

Njiuko GmbH

Git
PostgreSQL
REST-APIs
RSpec
Ruby on Rails
Pair programming
Jira
Teamwork
Slack
Backend
Docker
Kubernetes
Hubspot API

Jan 2022 - Dec 2022

1 year

Chicago, United States

Freelance Software Developer

Combinaut, Inc.

English
CSS
HTML
JavaScript
MySQL
RSpec
Ruby on Rails
Health care
Backend
Customer relationship management

Jan 2021 - Dec 2021

1 year

Hamburg, Germany

Freelance Software Developer

Analyse & Konzepte immo.analytics GmbH

JavaScript
PostgreSQL
Ruby on Rails
Fullstack
Real estate

Jan 2021 - Dec 2021

1 year

Berlin, Germany

Freelance Software Developer

Cocoli GmbH

English
PostgreSQL
REST-APIs
Ruby
Ruby on Rails
Sass
Stimulus.js
Test driven development
Furniture marketplace
Fullstack
Stripe payments API
Shop system

Jan 2021 - Dec 2021

1 year

Berlin, Germany

Freelance Software Developer

Match-patch

MySQL
REST-APIs
Ruby on Rails
Backend
Stripe payments API
Dating

Jan 2020 - Dec 2020

1 year

Hamburg, Germany

Freelance Software Developer

New Work SE (Xing)

MySQL
REST-APIs
Ruby on Rails
Backend
Community
AMQP
Payments

Jan 2020 - Dec 2020

1 year

Berlin, Germany

Freelance Software Developer

Zalando Marketing Services

English
PostgreSQL
Ruby on Rails
Fullstack
E-commerce
Backend / Frontend

Jan 2019 - Dec 2019

1 year

Freelance Software Developer

Whitebox GmbH

PostgreSQL
RSpec
Ruby
Ruby on Rails
Test driven development
Unit tests
Backend / Frontend
Robo advisor

Jan 2018 - Dec 2019

2 years

Berlin, Germany

Freelance Software Developer

mobileJobs GmbH

Git
HAML
JavaScript
MySQL
RSpec
Ruby
Ruby on Rails
Sass
Scrum
GitHub
Backend
Job-portal

Jan 2017 - Dec 2018

2 years

Hamburg, Germany

Freelance Software Developer

Xing AG

JavaScript
MySQL
REST-APIs
RSpec
Ruby on Rails
Teamwork
Backend
Fullstack
Community
AMQP
Importer

Jan 2016 - Dec 2017

2 years

Freelance Software Developer

Sonnen GmbH

MySQL
REST-APIs
Ruby on Rails
Backend
Renewable energy
Salesforce

Jan 2016 - Dec 2016

1 year

Berlin, Germany

Freelance Software Developer

sofatutor GmbH

Backbone.js
Coffeescript
JavaScript
jQuery
MySQL
Ruby on Rails
Learning platform

Jan 2013 - Dec 2016

4 years

Berlin, Germany

Freelance Software Developer

Zattoo

English
Backbone.js
Coffeescript
Git
HAML
JavaScript
jQuery
Marionette.js
MySQL
REST-APIs
RSpec
Ruby
Ruby on Rails
Sass
Twitter Bootstrap
Pair programming
Test driven development
Content management systems
Unit tests
Teamwork
GitHub
Fullstack
Backend / Frontend
Set-top-box
Elasticsearch
Importer

Jan 2012 - Dec 2019

8 years

Berlin, Germany

Freelance Software Developer

Xaa-Systems

Git
MongoDB
MySQL
NoSQL
REST-APIs
Ruby on Rails
GitHub
Content management system
Importer

Jan 2009 - Dec 2013

5 years

Berlin, Germany

Freelance Software Developer

Viacom - Nickelodeon - Viva - MTV Networks

German (native)
English
Backbone.js
Coffeescript
CouchDB
CSS
Facebook-APIs
Git
Google-APIs
HAML
JavaScript
jQuery
MongoDB
MySQL
NoSQL
REST-APIs
RSpec
Ruby
Ruby on Rails
Sass
Twitter-APIs
Pair programming
Test driven development
Jira
Unit tests
Teamwork
GitHub
Backend
Fullstack
Backend / Frontend
Content management system
Elasticsearch
Importer
Microsites
Authentication plugins
Microservices
Website

Jan 2008 - Dec 2018

11 years

Berlin, Germany

Freelance Software Developer

Motorradfreunde.com

Coffeescript
Marionette.js
REST-APIs
Ruby on Rails
Community

Jan 2008 - Dec 2009

2 years

Berlin, Germany

Freelance Software Developer

Moviepilot

Git
HAML
HTML
MySQL
RSpec
Ruby
Ruby on Rails
Sass
Pair programming
Scrum
Test driven development
Unit tests
Teamwork
GitHub
Community

Jan 2003 - Dec 2003

1 year

Berlin, Germany

Freelance Software Developer

KaDeWe - Feinschmecker-Etage

CSS
HTML
MySQL
Content management system
Shop system
PHP

Jan 2002 - Dec 2003

2 years

Berlin, Germany

Freelance Software Developer

arun - Werbung

Website
PHP
Flash

Industry Experience

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

Experienced in Information Technology, Automotive, Media and Entertainment, Retail, Energy, and Advertising.

Information Technology

Automotive

Media and Entertainment

Retail

Energy

Advertising

Business Area Experience

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

Experienced in Information Technology, Product Development, and Customer Service.

Information Technology

Product Development

Customer Service

Summary

I'm a freelance software developer since 2002 and work as backend, frontend or full stack developer for craftsmen, medium sized companies, startups or corporations. If you need support for your existing team, want to implement an idea or just need some advice about software development, just give me a call.

Skills

Apache
Backbone.js
Coffeescript
Couchdb
Css
Cucumber
Facebook-apis
Git
Google-apis
Haml
Html
Real-estate–apis
Javascript
Jquery
Marionette.js
Mongodb
Mysql
Nosql
Postgresql
Rest-apis
Rspec
Ruby
Ruby On Rails
Sass
Stimulus.js
Twitter Bootstrap
Twitter-apis
Amqp
Willingness To Travel
Teamwork
Linux
Github
Mac Os X
Atom.io
Slack

Languages

German

Native

English

Elementary

Statistics

Experience

Total positions 19

Experience in Information Technology 12 y

Avg length 2 y 6 m

Longest experience 10 y 11 m

Global Experience

Countries worked in 2 (Germany, United States)

Primary country Germany

Expertise

Recent roles Freelance Software Developer

Main industries Information Technology, Automotive, Media and Entertainment

Main business areas Information Technology, Product Development, Customer Service

Profile

Created

November 2023

Last Update

May 2025

Need a freelancer? Find your match in seconds.

Try FRATCH GPT

Frequently asked questions

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

Where is René based?

René is based in Eisenach, Germany.

What languages does René speak?

René speaks the following languages: German (Native), English (Elementary).

How many years of experience does René have?

René has at least 18 years of experience. During this time, René has worked in at least 1 role and for 19 different companies. The average length of individual experience is 1 year and 11 months. Note that René may not have shared all experience and actually has more experience.

What roles would René be best suited for?

Based on recent experience, René would be well-suited for roles such as: Freelance Software Developer.

What is René's latest experience?

René's most recent position is Freelance Software Developer at Njiuko GmbH.

What companies has René worked for in recent years?

In recent years, René has worked for Njiuko GmbH, Combinaut, Inc., Analyse & Konzepte immo.analytics GmbH, Cocoli GmbH, and Match-patch.

Which industries is René most experienced in?

René is most experienced in industries like Information Technology, Automotive, and Media and Entertainment. René also has some experience in Retail, Energy, and Advertising.

Which business areas is René most experienced in?

René is most experienced in business areas like Information Technology, Product Development, and Customer Service.

Which industries has René worked in recently?

René has recently worked in industries like Information Technology, Healthcare, and Real Estate.

Which business areas has René worked in recently?

René has recently worked in business areas like Information Technology, Customer Service, and Product Development.

What is the availability of René?

René is immediately available for suitable projects.

What is the rate of René?

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