> Markdown version of [/jobs/ext/4700739-frontend-developer-open-source-backup-software](https://www.wearedevelopers.com/jobs/ext/4700739-frontend-developer-open-source-backup-software). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Frontend Developer - Open Source Backup Software

- **Company:** Bareos GmbH & Co. KG
- **Location:** Köln, Germany (Remote available)
- **Contract:** Permanent contract
- **Skills:** HTML, JavaScript (Programming Language), Automation of Tests, Cascading Style Sheets (CSS), Continuous Integration, Web Development, Github, Graphical User Interface, Human-Computer Interaction, Python (Programming Language), Open Source Technology, Web Application Security, Software Engineering, TypeScript, Web Application Frameworks, Backup and Restore, Data Processing, ReactJS, Git, AngularJS, Information Technology, Free and Open-Source Software, Front End Software Development, Restful APIs
- **Published:** November 13, 2026
- **Apply:** https://jobs.meinestadt.de/koeln/standard?id=260653480

## About the Role

Very good knowledge of web development (HTML, CSS, JavaScript/TypeScript)
Knowledge of UI/UX design for technical applications
Experience with modern frameworks such as React, Angular, or comparable technologies
Confident with Git and common development workflows
Structured, self-driven way of working
Good English skills (team meetings are mainly held in English)

Nice to Have

Interest in open-source software
Experience with Bareos or other backup systems
Experience with monitoring or administration UIs
Understanding of REST APIs and client-side data processing
Basic knowledge of Python
Experience with test automation and CI/CD pipelines

## Description

Data Processing
Experience Design
Test Automation
CAN
Basic HTML
Administration
TypeScript
Open Source
IT Infrastructure
Make
UI
Entwicklungsumgebungen
Backup-Software
Design
IT
REST
HTML
JavaScript
Python
GUI
Hybrid
Automated Testing
CSS
Automation Testing
GIT
GitHub
Support
Continuous Integration
Frontend
Flexibilität, To further develop our Bareos backup software, we are looking for a front-end developer (m/f/d) to design, develop, implement, and maintain a new and modern graphical user interface. The goal is an intuitive, high-performance, and secure web interface that makes backup administration, monitoring, and reporting straightforward., Lead the development of a new user interface for Bareos
Choose the technology stack based on requirements, in coordination with the team
Ensure long-term maintainability of the software
Become part of the international Bareos team
Develop open-source software and make your work visible to everyone