Remote Senior Software Engineer, Payments Processing

Lithic is seeking a Senior Software Engineer for the Processing team to lead our next growth phase. You will own high‑reliability, low‑latency interfaces between Lithic and external payment networks, handling authorization, clearing, and settlement with Mastercard, Visa, and Amex. The role focuses on scalable, secure systems with strong uptime requirements. You will join a team of 170+ across 26 states and 7 countries, working in a hybrid remote model with NYC office proximity.