Senior Order to Cash Accountant — Finance, Sofia

📍 Sofia, Bulgaria | Full-time

See our Sofia office

Team description

The Order to Cash (O2C) team sits at the heart of SumUp's Finance function, managing the full revenue cycle — from invoice creation and payment collection through to period-end close, accounts receivable, and revenue recognition. As SumUp's Enterprise and Marketplace channels grow fast, the complexity of our billing operations is increasing, and this role is essential to keeping those processes accurate, compliant, and scalable. You'll take full ownership of some of our highest-impact billing workstreams, acting as the go-to expert for Enterprise partners and marketplace channels at a moment when getting this right really matters.

What you'll do

• Own end-to-end billing and reconciliation for marketplace channels (Amazon, eBay, OnBay, TEMU), including settlement posting, AR/AP netting, and discrepancy resolution
• Act as the single point of contact for Enterprise and Cooperation hardware billing, managing invoicing, payment follow-up, and revenue recognition across key partner accounts
• Calculate and book price protection credits and contractual discounts, validating compliance with partner agreements and ensuring accurate margin reporting
• Oversee the full RMA returns process for retailers, partners, and enterprise accounts, applying credit-memo logic and end-to-end control checks
• Perform impairment calculations, ageing analysis, and bad debt allowance support, ensuring compliance with GAAP and internal controls
• Mentor junior team members and proactively identify opportunities to improve processes as automation initiatives evolve

You'll be great for this role if you have…

• Strong knowledge of GAAP, with hands-on experience applying it to complex accounting transactions including journal entries, reconciliations, and trend analysis
• Experience managing high-volume accounts receivable processes, including billing, payment allocation, and resolution of complex discrepancies
• Ability to prioritise and manage multiple high-impact workstreams independently, maintaining accuracy in a fast-moving and evolving environment
• Comfort working with large volumes of transactional data and advanced Excel skills; familiarity with SAP and European VAT is a strong advantage
• Proven ability to build trusted relationships with commercial stakeholders such as Key Account Managers or Business Development teams, acting as a reliable finance partner

Why you should join SumUp

🌍 Opportunity to work with SumUppers globally on large-scale fintech products used by millions of businesses worldwide, from our modern Sofia office. This involves an office-first setup

🌈 Commitment to Diversity and Inclusion: be part of a workplace that values and promotes diversity, fostering an inclusive environment where everyone's perspectives are respected and embraced

🚀 Enrolment onto our Virtual Stock Option programme: you will own a stake in SumUp's future success

📚 A dedicated annual L&D budget of €2,000 for your individual development, which you can use to attend conferences and/or advance your career through further education

🏖 Generous time off: 25 days of paid leave, plus one extra day per year of service (up to 35), along with public holidays and special leave options

🏥 Peace of mind: comprehensive health and life insurance — includes dental coverage

💪 Stay active: on-site yoga and a co-sponsored Multisport card offering access to hundreds of sports facilities

🍽 Meal support: benefit from a tax-free food voucher programme plus flexibility via our Re:Benefits platform

🚌 Easy commute: free shuttle buses connecting directly to Joliot-Curie metro station

👶 Family-friendly: child birth or adoption of a child bonus

🌴 Break4me: 1-month sabbatical after 3 years of service

🔗 Referral Bonus: earn additional rewards by referring talented individuals to join the SumUp team

About SumUp

Be empowered to do more that matters.

At SumUp, we're on a mission to empower small businesses across the globe by providing simple and affordable tools that allow them to thrive. Today, over 4 million businesses in 37 markets rely on SumUp as their financial partner to manage payments, finance and customer relationships.

Our commitment to small businesses is reflected in our diverse team of over 3,000 SumUppers from over 90 nationalities, united by global collaboration and an innovative mindset. Our core values lay the foundation for who we are and what we stand for, shaping our work culture and driving our success. We foster inclusivity and a continuous learning culture, providing a safe space for personal and professional growth. Our differences make us unique and strong as we strive to create an environment where everyone belongs and feels supported, no matter how they identify.

SumUp is proud to be an Equal Employment Opportunity employer, actively seeking and embracing diversity in our workforce. We don't make hiring or employment decisions based on race, colour, religion or religious belief, ethnic or national origin, nationality, sex, gender, gender identity, sexual orientation, disability, age or any other basis protected by applicable laws or prohibited by company policy. Our commitment extends beyond recruitment to creating a safe and respectful workplace where harassment of any form is strictly prohibited. Discover more about our culture and opportunities on our careers website, and follow our journey on LinkedIn, Instagram, and TikTok.