Customer Billing & AR Specialist

The role

You will manage quote correctness, Stripe billing, and customer collections. You will support the Sales team with deal structures and ensure invoices are accurate and paid on time.

What you will do

• Review quotes for correctness regarding plans, price, discounts, and payment terms
• Act as the billing partner for Sales and Key Account Managers to help structure deals
• Manage subscriptions, invoices, credit notes, and refunds in Stripe
• Handle billing for Claap and align its Stripe setup with lemlist
• Answer billing questions from customers and internal teams
• Own collections for a customer portfolio, including failed payments and overdue invoices
• Register the company on customer supplier portals
• Keep Stripe and HubSpot data consistent for revenue reporting
• Document processes in Notion and work with Operations to improve quote-to-cash processes
• Report overdue amounts and risks weekly

Required qualifications

• 1 to 4 years of experience in billing operations, accounts receivable, order-to-cash or finance operations, ideally in B2B SaaS
• Hands-on experience with a subscription billing system (Stripe, Chargebee or similar)
• Rigor
• Clear written communication
• Comfortable steering salespeople
• Firm and friendly when chasing payments
• Comfort with numbers and spreadsheets
• Reactive, with a service mindset
• Comfortable asking questions when you don't know
• At ease with change
• Fluent English
• Based in Serbia

Nice to have

• Deep Stripe Billing experience, plus HubSpot and an AR / dunning tool (Upflow or similar)
• Basics of e-invoicing & Indirect sales tax for SaaS (VAT, US Sales tax)
• A general understanding of tech tools
• A good command of French

Benefits

• Central role in a profitable, growing SaaS group
• Real ownership of your scope
• Room to improve processes with the Operations team
• Remote, async culture with flexible hours

Before you apply

• Interview with Victoire (Lead TA)
• Interview Phil (Head of Finance & Ops)
• Practical case and live debrief with Mathilde (Senior RevOps) and Luka (Billing specialist)
• Quick chat with Oriane (COO)
• Reference checks

About the company

lemlist is the outbound platform for sales teams. It is a profitable, 100% bootstrapped company with 180 people.