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• Conducted QA and hardware regression testing, proactively identifying and resolving over 25 potential issues, which prevented system failures and reduced field incidents.• Wrote and deployed 19 automated tickets/scripts to address specific issues in kiosk hardware and software applications over a 2.5-month period, leading to significant reductions in downtime and enhanced operational efficiency across all 1,300 kiosks in the US and Canada.• Developed backend services using Java Spring Boot and SQL, improving system configuration and user management processes, and enhancing overall efficiency.• Designed and implemented a React-based hardware interface emulator with WebSocket integration for local testing and real-time interaction. This reduced the need for physical hardware and kiosks by 80%, as the majority of testing occurrs through pushing builds to a physical kiosk and testing features manually. Significantly increased team efficiency and accelerated the feature development and testing process.• Refactored and enhanced UI components using Svelte for our product backend rewrite, improving the Manager Tools interface and streamlining the workflow for over 500 manager-level users.