Responsibilities * Respond to customer inquiries via email and phone — promptly and professionally * Analyze errors and resolve issues, including providing clear information and follow-up * Document interactions and escape complex cases to the appropriate teams * Independently handle incoming customer requests, including creating tickets for internal tracking * Take responsibility for follow‑up until reported incidents or errors are resolved * Handle customer inquiries from Germany, Switzerland, and across Europe * Serve as an internal first point of contact for operational knowledge of our software Requirements * Background in finance and/or accounting is a plus * Experience handling a high volume of external customer inquiries and internal team follow‑ups is a plus * Ability to manage a variety of high‑frequency tasks * Structured and detail‑oriented working style * Fluent in English and German; additional languages are an advantage