Our mission:

Are you a motivated Billing and Contract Specialist looking to work in a flexible role (30–40 hours per week) in a collaborative, multicultural environment?

At Open-Xchange, we develop open-source communication and collaboration software used by public sector organizations, telcos, and hosting providers to keep data secure and under their control. Our products cover email, collaboration, DNS security, and related services, and are used by millions of people worldwide.

Discover what Open-Xchange offers you:

• We work in a non-hierarchical organization that empowers everyone to take responsibility, stay focused, and contribute directly to the company’s success and customer value.
• We value expertise and continuous professional development. Our professionals work closely with experienced colleagues, take ownership of their work, and continuously expand their skills.
• Openness and diversity are core to OX. Different perspectives, backgrounds, and ways of thinking strengthen our collaboration and help us see the bigger picture.

Your team:

As part of the Contract Lifecycle team at Open-Xchange, you will support the end-to-end customer lifecycle. The team works closely with Legal, Sales/Account Management and Finance to ensure accurate contract management, compliant invoicing, and transparent financial processes across customers and internal entities. Your role contributes directly to reliable operations and financial integrity within the OX group.

Your new job:

• Manage customer and contract master data in our billing systems and ensure data accuracy throughout the contract lifecycle.
• Prepare, review and file contracts, offers, and purchase orders in line with our standard templates and processes
• Create, send and track customer invoices, including license and support key deliveries, based on contractual terms and delivered services.
• Monitor outstanding balances and handle payment reminders and default interest in coordination with internal teams.
• Support reporting, audits and financial compliance activities, including intercompany invoicing within the OX group.

Your background:

• Degree in Business Studies, commercial education, or a professional background in accounting or finance.
• Relevant professional experience in invoicing, accounting, or commercial operations, ideally within a software billing environment.
• Interest in template and contract management; initial experience is a plus.
• Strong ability to keep an overview across multiple systems and processes; comfortable working with ERP or billing tools (e.g. Vemas) and other digitalization tools.
• High motivation to take ownership and confidence working with multiple internal stakeholders such as Sales, Legal, Finance and Compliance.
• Structured, reliable working style with attention to detail.
• Strong verbal and written communication and comprehension skills in English and German.
• Comfortable working in a remote-first environment with multicultural teams across different time zones.

This is what you get at Open-Xchange:

• The flexibility to work 100% remotely ensures a work environment that suits you best.
• Flexible working hours that allow you to successfully combine your home and family responsibilities with work. 
• Getting together in-person for workshops and fun team events. 
• Time off to volunteer – and mental health support when you need it.
• We provide financial relief through corporate benefits and a subsidy for ergonomic chairs and desks.
• We can discuss further location-related benefits together in an initial talk.

Join the team:

Join us in our fight for an open internet and deliver added value! Click “Apply now” to submit your application.

Your contact person:

Reach out to Justin (recruiting@open-xchange.com) from the People Team. He will be able to discuss current opportunities and tell you more about our exciting vision and mission @OX.