Senior Software Engineer – Android contract

Who We Are At KEV, we build mission-critical financial software for K–12 schools on a massive scale. Our platform delivers real-time control and visibility into every dollar collected, whether cash, check, or digital, replacing fragmented workflows with secure, modern systems. Trusted by 27,000 K–12 schools and districts managing over $8B annually, KEV operates at the intersection of payments, accounting, and reporting—where complexity is high and engineering excellence matters. Headquartered in Toronto with teams across North America, we are scaling fast and investing deeply in cloud-native, data-driven technology. If you want to build high-impact SaaS products that solve hard problems, scale with purpose, and make your work matter in public education, KEV is the place to do it. About the Role We are seeking a Senior Software Engineer to help build and evolve our Android-based Point-of-Sale (POS) platform. This role is approximately 70% Android development and 30% backend development, with a primary focus on developing and supporting applications running on Android POS devices while contributing to Azure-based backend services responsible for telemetry, device management, monitoring, and operational insights. The ideal candidate will have strong Android development experience, an understanding of payment ecosystems and POS hardware, and hands-on experience building cloud services that support large fleets of deployed devices. Android Development (70%) Design, develop, and maintain Android applications running on POS devices. Build secure and reliable payment and operational workflows. Develop applications using Kotlin, Java, Android SDK, Jetpack Libraries, MVVM, Coroutines, and Dependency Injection (Hilt/Dagger). Integrate with card readers, receipt printers, barcode scanners, NFC readers, and customer-facing displays. Develop and support applications on PAX devices and future Android-based payment terminals. Optimize application performance, stability, and responsiveness. Troubleshoot production issues across multiple Android device models and OS versions. Backend & Telemetry Services (30%) Design and develop backend services that collect, process, and analyze telemetry generated by deployed payment devices. Build APIs supporting device health monitoring, diagnostics, remote configuration, operational reporting, and fleet management. Design scalable ingestion pipelines for device metrics, transaction events, logs, connectivity status, diagnostics, and remote management events. Build monitoring and alerting capabilities that improve operational visibility across the device fleet. Partner with platform and data teams to expose telemetry data for reporting and analytics. Required Qualifications 8+ years of software engineering experience. <span data-