Senior Backend Engineer – Payments & Fintech. This position is listed on behalf of a partner company and is based in Switzerland with Remote OK for Europe-based candidates. The role focuses on rebuilding and scaling the financial systems at the heart of a rapidly growing global platform. You will own the architecture and implementation of a canonical payments, subscriptions, billing, and entitlement platform from the ground up, combining deep backend engineering with complex financial workflows across multiple payment gateways, legal entities, and currencies. You will work closely with Finance, Operations, and technical leadership to ensure every payment, entitlement, refund, and financial record is accurate and traceable. Your work will directly improve revenue integrity, accounting accuracy, customer entitlements, and business reporting. You will also lead a migration from legacy systems to a reliable, auditable platform without disrupting live customers or financial operations. This is an ideal opportunity for an experienced engineer who enjoys solving money-system problems where correctness, reliability, and data integrity are critical.

Accountabilities - Design and implement a canonical billing and entitlement ledger using an append-only, journals-as-truth architecture with PostgreSQL, ensuring every entitlement can be traced to a valid paid order. - Own the complete subscription lifecycle, including purchases, renewals, resubscriptions, upgrades, downgrades, plan changes, trials, cancellations, lapses, proration, and dunning across multiple payment gateways. - Build

Senior Backend Engineer – Payments & Fintech. This position is listed on behalf of a partner company and is based in Switzerland with Remote OK for Europe-based candidates. The role focuses on rebuilding and scaling the financial systems at the heart of a rapidly growing global platform. You will own the architecture and implementation of a canonical payments, subscriptions, billing, and entitlement platform from the ground up, combining deep backend engineering with complex financial workflows across multiple payment gateways, legal entities, and currencies. You will work closely with Finance, Operations, and technical leadership to ensure every payment, entitlement, refund, and financial record is accurate and traceable. Your work will directly improve revenue integrity, accounting accuracy, customer entitlements, and business reporting. You will also lead a migration from legacy systems to a reliable, auditable platform without disrupting live customers or financial operations. This is an ideal opportunity for an experienced engineer who enjoys solving money-system problems where correctness, reliability, and data integrity are critical.

Accountabilities - Design and implement a canonical billing and entitlement ledger using an append-only, journals-as-truth architecture with PostgreSQL, ensuring every entitlement can be traced to a valid paid order. - Own the complete subscription lifecycle, including purchases, renewals, resubscriptions, upgrades, downgrades, plan changes, trials, cancellations, lapses, proration, and dunning across multiple payment gateways. - Build