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René F.

Freelance Software Developer

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
  • Stimulus JS
  • Shopsystem
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
Germany

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
Germany

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
  • Lernplattform
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-mangement-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
  • Shopsystem
  • PHP
Jan 2002 - Dec 2003
2 years
Berlin, Germany

Freelance Software Developer

arun - Werbung

  • Website
  • PHP
  • Flash

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.

Languages

German
Native
English
Elementary
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