Developer – Billing Systems (REF5676S)

Job Description

Join a team responsible for one of the most business-critical areas within Deutsche Telekom's international group: billing systems. We deliver accurate, reliable, and flexibly configurable billing for fixed-line and mobile networks as well as mobile service providers — serving millions of customers.

We're actively working to merge fixed-line and mobile billing into a single, modern platform, while gradually retiring legacy systems. That means you won't be maintaining a static, legacy-only system — you'll be part of a continuously evolving architecture undergoing real modernization.

Your responsibilities will include: