Customer Billing & AR Specialist

lemlist is the outbound platform for sales teams: find leads, run multichannel campaigns (email, Linked In, calls), personalize with AI and book meetings.

lempire also builds lemwarm (deliverability), Claap (AI call intelligence), Taplio and Tweet Hunter.

We're at +$60M ARR, growing ~50% year over year, profitable and 100% bootstrapped, with 180 people.

We’re now moving upmarket, signing larger deals, expanding our partnerships, working with data providers, and integrating acquisitions like Claap.

Thousands of customers pay us every month, from self-serve sign-ups to multi-year sales contracts, and we need you.

Every deal we close and every plan a customer changes goes through billing. When a quote is set up wrong, the customer gets the wrong invoice, Sales and Customer Success lose time, and cash comes in late.

As our Customer Billing & AR Specialist, you'll make sure every quote is right, every invoice matches what we sold, customers get fast and clear answers, and they pay on time. You'll also be the billing partner of our Sales team: the person reps turn to when a deal doesn't fit the standard path.

You’ll join the Operations team. You'll work hand in hand with Luka, who runs customer billing and accounts receivable today, and with Mathilde, Senior Ops Manager, and the rest of the Operations team, who design our quote-to-cash processes. You bring what you see in the daily run, and together you make the process as efficient as possible. You'll also work daily with Sales, Key Account Managers, Customer Success, Support, Finance and Product.

Your focus is quote correctness and support to Sales, invoices in Stripe for lemlist and Claap, billing communication with customers, collections for your customer portfolio, and making that run lighter month after month.

• Own quote correctness: review quotes before they go to the customer and before they reach billing (plan, price, discounts, payment terms, billing entity), using our quote checker and CRM rules.

• Be the go-to billing person for Sales and Key Account Managers: help them structure deals, pick the right plan and terms, and use our quoting tools.

• Steer reps in the right direction when a deal doesn't fit our rules, and help them find a setup that works for the customer and for us.

• Reply fast to Sales requests, especially when a deal is about to close. No rep should lose a deal waiting for billing.

• Explain billing rules in plain words, and walk new reps through them.

• Become our Stripe expert: subscriptions, invoices, credit notes, refunds, coupons and taxes.

• Set up subscriptions from signed deals: new plans, upgrades, downgrades, add-ons, seat changes, discounts and multi-year contracts.

• Check that invoices & subscriptions are correct, edit them when needed, and issue credit notes and refunds when they apply. Make sure product access matches what the customer pays for and automated tax collection was correct.

• Take over billing for Claap and help align its Stripe setup (products, prices, coupons, metadata) with lemlist's.

• Back up Luka on billing requests and collections, and he backs you up, so the run never depends on one person.

• Answer billing questions from customers, Customer Success and Support, within agreed response times.

• Work mainly on our afternoon-to-evening shift, ending at 21:00 or 22:00 Belgrade time, so customers and teams in the US get answers the same day. You start on standard hours during onboarding, and hand over with Luka every day.

• Turn recurring questions into clear answers: FAQ, macros, internal guides. The same question should not come back every week.

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