Senior Software Engineer (Android)

• 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
• 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 helping to balance building maintainable software for long term success, with the need to deliver value to customers in an iterative fashion
• Ensure compliance with PCI-DSS, security best practices, and other financial industry standards
• Mentor and guide junior engineers, conduct code reviews, and drive best practices in software development
• Troubleshoot and resolve complex technical issues, ensuring high availability and performance
• Participate in agile development processes, including sprint planning, daily stand-ups, and retrospectives
• Stay up to date with emerging technologies, frameworks, and trends

• Peer and company recognition programs
• Unlimited Vacation
• Sabbatical opportunity after five years
• Professional Development Reimbursement Program
• Commitment to Employee Wellness through resources such as a quarterly Wellness Stipend
• Various peer and company recognition programs
• 401(k) and matching
• Medical, Dental, & Vision Coverage
• Subsidized backup childcare
• Mental Health Benefits

Excellent communication, collaboration, and problem-solving skills that lead others by exampleDeep knowledge of multi-threading/concurrency (experience with coroutines a plus)Openness and enthusiasm for AI tooling to enhance R&D productivityExperience working in a large (Android) project/codebase, architecting for clear domain boundaries, modularity, reusability, and testabilityExpertise in observability, monitoring, and alerting for complex user-device interactionsExperience designing public APIs for hassle-free consumptionStrong skills in mentoring fellow developers on best practicesTrack record of complex and robust SDK integrations completed successfullyExpert-level proficiency in Kotlin, Java, and/or JVM languagesCard Payments/EMV experienceHardware/device integration experienceSecurity and key management experience