Recommended expert

Patrick Bartels

Senior Backend Developer

Patrick Bartels
Hamburg, Germany

Experience

Aug 2024 - Apr 2025
9 months
Berlin, Germany

Senior Backend Developer

stocubo GmbH

  • Further development of the online shop
  • Tech stack: Ruby on Rails, JavaScript, Postgres, AWS, Git, Continuous Deployment, Kubernetes, SLIM
Jan 2023 - Present
3 years 1 month
Hamburg, Germany

Senior Backend Developer

vonfoorn GmbH

  • Backend development
  • System and software architecture
  • Prototyping
  • Project and team leadership
Sep 2022 - Jul 2024
1 year 11 months
Hamburg, Germany

Senior Backend Developer

Penseo GmbH

  • Further development of a portal for employee benefits
  • Tech stack: Ruby on Rails, JavaScript, VueJS, Vuex, Firebase, Postgres, AWS, Git, Jest, Cypress, Continuous Deployment
Apr 2022 - Sep 2022
6 months
Berlin, Germany

Senior Backend Developer

ucm.agency

  • Backend development of new features for the ucm app
  • Tech stack: Ruby on Rails, React Native, Continuous Deployment, AWS, Git
Oct 2021 - Mar 2022
6 months
Wiesbaden, Germany

Senior Fullstack Developer

odacer finanzsoftware GmbH

  • Development of new features for papierkram.de
  • Tech stack: Ruby on Rails, HAML, SASS, Docker, Git
Sep 2020 - Mar 2021
7 months
Heidelberg, Germany

Senior Backend-Developer

Getsafe Digital GmbH

  • Backend development of new features for the Getsafe app
  • Integration of price comparison portals from the UK market
  • IT environment: Ruby on Rails, HAML, SASS, Docker, Git, Continuous Deployment, Event Sourcing, Domain Driven, Redis
Oct 2019 - Apr 2020
7 months
Essen, Germany

Senior Backend-Developer

Innogy SE

  • Backend development of new features for the Getsafe app
  • Integration of price comparison portals from the UK market
  • IT environment: Ruby on Rails, HAML, SASS, Docker, Git, Continuous Deployment, Redis
Apr 2019 - Apr 2020
1 year 1 month
Düsseldorf, Germany

Lead Backend-Developer

Mintano UG

  • Backend development of new features for the Onebooth app
  • Further development of the web portal
  • IT environment: Ruby on Rails, HAML, SCSS, Git, Continuous Deployment, React Native, Redis
Sep 2016 - Apr 2017
8 months
Hamburg, Germany

Senior Backend-Developer

Wacku UG

  • Development of a social network based on Event Sourcing
  • IT environment: Ruby on Rails, HAML, Git, Continuous Deployment, AWS, Redis, Event Sourcing, Elasticsearch, Docker
Jun 2016 - Oct 2022
6 years 5 months
Cologne, Germany

Senior Backend-Developer

1 FC Köln GmbH & Co KGaA

  • Development of the backend for fc-spruchmaschine.de
  • IT environment: Ruby on Rails, HAML, SASS, Git, Continuous Deployment, Heroku, Redis
Oct 2015 - Dec 2022
7 years 3 months
Cologne, Germany

CTO and Fullstack Developer

heysite GmbH

  • Concept and development of the heysite.io website
  • Tech stack: Ruby on Rails, HAML, SASS, Git, Heroku, Redis, Elasticsearch, Docker, JavaScript
Jul 2015 - Oct 2019
4 years 4 months
Cologne, Germany

Fullstack Developer

Köln-Düsseldorfer Deutsche Rheinschiffahrt AG

  • Further development of a ticket shop we built ourselves
  • Tech stack: Ruby on Rails, HAML, SASS, Git, Heroku, Redis, JavaScript
May 2013 - Apr 2015
2 years
Munich, Germany

Backend Developer

BMW AG

  • Development of a sales platform for the newly introduced i models
  • Tech stack: Ruby on Rails, Git, AWS, Redis, Continuous Deployment
Jan 2013 - Jan 2013
1 month
Juba, SS

Fullstack Developer

IRC and UNHCR

  • Development of a platform to record refugees and connect to UN servers
  • Tech stack: Ruby on Rails, Git, Redis, HAML, SASS
Jan 2012 - Nov 2015
3 years 11 months
Mae Sot, Thailand

Backend Developer

Karen Human Rights Group

  • Concept and development of a platform to record and analyze reports
  • Tech stack: Ruby on Rails, Git, HAML, SCSS

Skills

  • Backend Development
  • System And Software Architecture
  • Prototyping
  • Project And Team Leadership
  • Industry Expertise: E-commerce, Platforms, Automotive, Insurance, Finance, Digitalization
  • Programming Languages: Ruby, Python, Java, Javascript/es6, Go, Elixir
  • Databases: Postgresql, Mysql/cloudsql, Firebase, Mongodb
  • Frameworks: Ruby On Rails, Vue, Angular, React, React Native, Django

Languages

German
Native
English
Advanced

Education

Oct 2007 - Sep 2010

HAW Hamburg

B.Sc. in Applied Computer Science · Applied Computer Science · Hamburg, Germany

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