
Working Student / Part-Time Employee (m/f/d) IT Interfaces & ERP Systems/ 1 week ago
Quick Summary
Working Student / Part-Time Employee (m/f/d) IT Interfaces & ERP Systems
We are looking for immediate support for the maintenance, optimization, and further development of our API interfaces as well as the connection of our ERP and ticket systems.
Your Tasks:
- Manage interfaces: You develop, monitor, and optimize our modern API interfaces (REST/SOAP).
- Connect systems: You ensure smooth data exchange between our ERP system and the IT ticket system.
- Automate processes: You identify media disruptions and automate recurring workflows.
- Analyze errors: You handle troubleshooting for interface issues and document the solutions.
What You Bring:
- Studies: Ongoing studies in Computer Science, Business Informatics, or similar (preferably during lecture-free periods, semester of leave, or at the end of studies due to the number of hours).
- API Knowledge: Initial practical experience with APIs (e.g., REST, JSON, XML) and web services.
- Programming Skills: Solid knowledge of at least one common scripting or programming language (e.g., Python, JavaScript, PHP, or C#).
- System Understanding: Initial experience with ERP and ticket systems is an advantage.
- Self-organization: Reliable and structured way of working in a remote setup.
What You Can Expect From Us:
- Attractive Pay: A fixed hourly wage of €18.00.
- 100% Remote: Work completely flexibly from wherever you want.
- Working Hours: 20 hours/week (during semester), 30 hours/week (during lecture-free periods).
- Flexibility: Adjustment of working hours by arrangement to optimally combine job and studies.
- Digital Onboarding: A structured, fully digital onboarding process and dedicated contact persons in the team.
Sounds like you?
Then we look forward to your brief application! Simply send us your CV and your current transcript of records.
The @one IT GmbH, based in Friedberg (Hessen), has been a reliable IT partner for companies throughout Germany for over 20 years. Our focus is on IT consulting with demanding project work for large corporations and managed services, predominantly for medium-sized businesses – e.g., IT infrastructure, cloud services, or IT security – with deep technical expertise, certified specialists, and close customer proximity.
Whether complex migration, hybrid cloud architecture, or complete IT support: We support our customers with tailor-made solutions – efficient, secure, and future-proof.
Since 2025, we have been part of citadelle systems AG – a Germany-wide IT system house group with currently 13 locations. Whether medium-sized businesses or large corporations – we stand for well-thought-out IT solutions with technical depth and high reliability.
With us, you will find real IT with heart and mind.
We are citadelle systems – a growing IT system house group across Germany with headquarters in Essen and currently 13 locations. Around 230 employees work daily with passion to support medium-sized companies with tailor-made IT solutions – from classic infrastructure to cloud and managed services to strategic IT consulting.
Our customers appreciate the quality and commitment of our local teams: In the years 2023 and 2024, citadelle systems AG was voted among the top 3, and in 2025 even in 1st place of service providers in Germany. We were also recognized again as a top employer by Kununu in 2025 – which makes us proud.
Interested?
Then let's go! Apply now. We look forward to your application.

