Senior Software Engineer - Android

Senior Software Engineer - Card Readers Toast is building the all-in-one restaurant platform that helps restaurants operate their business, increase sales, engage guests, and keep employees happy. Toast connects employees, operations, and guests on a reliable, easy-to-use platform so restaurateurs can stay one step ahead of a rapidly evolving hospitality market. The Card Readers team processes millions of card payments a day for Toast’s restaurant customers. Hundreds of thousands of restaurants depend on the software we build to run their business. We make payments friction-free while maintaining the highest levels of security, enabling new payment options, and staying at the forefront of emerging technologies. As a Senior Software Engineer on the Card Readers team, it’s your job to make sure those millions of payments are processed quickly, reliably, and securely. You will be a key team member responsible for designing, developing, and maintaining our POS payment integrations. You will work closely with hardware SDKs, the core POS application team, and other cross-functional stakeholders to drive technical decisions and refine the target architecture for our payment solutions. Your expertise in high-throughput asynchronous JVM solutions, coupled with a deep understanding of mission-critical transaction processing, will be crucial in delivering robust and scalable solutions. About this roll *: (Responsibilities) Design, develop and roll out robust, high-performance applications using Kotlin. Lead technical discussions and decisions on best practices, performance optimizations, and security. Collaborate with cross-functional teams (backend, product, UX/UI, QA) to deliver seamless payment experiences. Optimize mobile payment flows for security, speed, and reliability. Shape the face of development at Toast by