Design, develop, and maintain backend services and distributed systems for high-throughput payment flows. Provide architectural input on scalability, data consistency, reliability, and system performance. Identify system bottlenecks and implement robust, scalable, and reliable engineering solutions. Own complex features or systems from planning to monitoring. Collaborate with product, design, data, compliance, and operations teams. Communicate technical challenges and solutions to stakeholders. Uphold strong engineering standards through code reviews and documentation. Mentor junior engineers. Contribute to a healthy engineering culture. Operate effectively across distributed teams and time zones. Collaborate with cross-functional teams to define, design, and ship features.