Billing Support Associate (all genders)

Job Details

Role: Working Student / Billing Support Associate – Finance (all genders)

Location: Vienna (Hybrid) or Berlin (Hybrid)

Hours: 15–20 hours/week, part-time (ideal alongside your studies)

Language: German (C1) & English (B2/C1)

Salary: €1,300 – €1,500 gross/month for 20 h/week

🚀 Join fiskaly! Help Us Simplify Receipts for Millions

Millions of people interact with fiskaly every day, even if they don’t realize it. As a B2B company, we power the retail technology behind digital receipts and secure, legally compliant transactions.

By making receipts tamper-proof through digital signatures, we help fight tax fraud. And with our paperless receipt solution, we offer consumers a modern alternative while helping merchants streamline their operations.

Sure, our solutions sound complex but our mission is simple: make receipts easy for everyone.

💼 The Role

Billing has moved into Finance, and we are looking for someone who wants to own it. As our Billing Support Associate , you are the first point of contact when a customer has a question about an invoice: “Why was I charged for this?”, “Can you send me a copy?”, “We paid twice.” You handle these tickets from start to finish, work closely with Accounting, Sales, Data and Customer Support, and make sure our customers understand exactly what they pay for – and why.

This is not a “just answer tickets” job. You will see patterns nobody else sees, and we expect you to turn them into better processes, clearer templates and fewer tickets . If you are studying business, accounting or something similar and want real responsibility in a scaling SaaS company, this is your role.

🛠️ What You’ll Do

Own the Billing Inbox in Zendesk: Handle incoming billing tickets (invoice questions, copies, corrections, credit notes, payment allocation) from our customers in Germany, Austria, Spain, Italy and Sweden – accurately, friendly and on time.

Investigate & Resolve: Check contracts, usage data and invoices in our billing tools, find out what happened, and give the customer a clear answer.

Corrections & Credit Notes: Prepare invoice corrections and credit notes for review by Accounting and make sure the changes are documented properly.

Dunning Support: Support our collections process – answer questions about reminders, coordinate payment plans with Accounting and keep the receivables clean.

Knowledge Base: Maintain and improve our customer-facing billing explanations and internal FAQs, so the same question doesn’t have to be answered twice.

Process Improvement: Track recurring ticket types, report them to Finance and Product, and help us fix the root cause instead of the symptom.

👀 What You Bring

Studies: You are enrolled in a Bachelor’s or Master’s programme (business administration, accounting, finance, economics or similar) and available 15–20 hours per week.

Customer Mindset: You like helping people, stay calm when someone is annoyed about an invoice, and write clear, polite emails in German and English.

Numbers Don’t Scare You: You understand how an invoice, a credit note and a payment relate to each other. First experience in accounting, billing or customer service is a plus, not a must.

Structured & Reliable: You keep track of open tickets, follow up, and don’t let things fall through the cracks.

The Tech Mindset: You are comfortable with Google Workspace / MS Office, learn new tools quickly, and are curious about how automation and AI can make support faster.

Languages: German (C1) and English (B2/C1) for our customers and internal communication. Spanish or Italian is a nice bonus, not a must.

✅ What We Offer

A team that values output over hours . We plan around your lecture schedule and exam periods.

Flexible working hours and a hybrid setup in Vienna.

Real ownership from day one and insight into the finance operations of a scaling and fast growing international SaaS company.

Mentoring by our Accounting team and the option to grow into a permanent Finance role after your studies.

Hardware of your choice (Windows/Mac).

A company culture that is open, direct, and pragmatic.

💡 Why fiskaly

Joining fiskaly means contributing to a mission-driven company that is redefining how compliance is done in Europe and beyond. Here, you’ll grow, learn how a modern finance team works, and make a real impact – one solved ticket at a time.

If that resonates, you’ll probably enjoy working here.