WIIT Aktiengesellschaft | Germany | 40xxx Düsseldorf | Permanent position | Part time - flexible / Home office | Published since: 01.04.2026 on stepstone.de
Billing & Commercial Support Specialist (m/f/d)
We are one of the leading cloud service providers for business-critical applications and enable companies to digitize their business processes. With more than 500 employees and 17 data centers at 6 locations across Germany, we form the backbone for the digital infrastructure and offer our customers reliable and state-of-the-art IT services. Providing digitalization and supporting our customers to keep their business-critical applications safe and highly available is our highest demand. Our specialists ensure that our customers always experience the best performance of their systems and support us personally with first-class service and customer proximity. .
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Your tasks • Your profile • What we offer
Are you looking for a structured part-time role (20-25 hours) in the commercial sector and would you like to develop in the Billing? Then we are waiting for a responsible position in the operational billing and billing environment in which you support our team with your expertise in carrying out everyday business processes. Your tasks In your role as a Billing & Commercial Support Specialist in parttime, you support our team in operational billing and billing management. You will take care of the creation and testing of invoices as well as the processing of invoice corrections and credits. In addition, you take over the care and management of customer and contract data and are the first respondent for customers in the B2B and B2C sectors with billing-related questions. You are also responsible for general administrative activities in the commercial sector.
Commercial background (e.g. through training, professional experience or comparable qualification). Ideally, first experiences or touch points with invoice creation, customer contact or commercial processes. Safe handling of MS-Excel. Careful, structured and reliable operation. Embossed team capacity, communication strength and self-initiative. Conversation-proof German and good English skills (word and writing).
Valuable team with flat hierarchies and living duz culture. Experienced leadership as a direct respondent, with a focus on structured integration, clear assignment and sustainable development. Reliable processes and a professional working environment that allows efficient and concentrated working in the part-time model. Attractive part-time remuneration with additional benefits. Flexible working hours and possibility for mobile work (after incorporation). Living and modern office in the heart of Düsseldorf with good public transport connection. Free drinks and snacks, for the healthy start to the day or even the extra serving of coffee in the morning. Versatile benefits such as Germany ticket, kindergarten grants, E-Gym Wellpass, BusinessBike or Givve, the prepaid card with your monthly balance. Employee events, vouchers and discounts. .
Location
 | WIIT Aktiengesellschaft | |
| 40212 Düsseldorf | ||
| Germany |
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