Hana Widyatari

Junior Frontend Engineer at Broom.id (2024-03 – 2025-04)

Developed and optimized cross-platform mobile and web applications using TypeScript, React, and React Native, streamlining the full mobile workflow across Android Studio and Xcode with reliable OTA deployments via CodePush and EAS Update.
Integrated Datadog for real-time observability, structured logging, and performance tracking, resulting in faster bug detection and more controlled production incident response.
Implemented scalable API integrations and Redux for state management, and delivered a mobile push notification feature using OneSignal that improved real-time KYC status visibility for end users.
Collaborated with UI/UX teams to build a unified Design System package, reducing cross-team development time and ensuring consistent visual standards across the platform.
Maintained high code quality with Jest and React Testing Library, achieving a 70% reduction in production bugs, while leveraging AI-assisted tools (Cody, Locofy.ai) to accelerate sprint velocity in an Agile environment.

Software Engineer at Mazecare (2022-10 – 2023-12)

Developed high-performance healthcare web applications using TypeScript, Vue.js, and Nuxt.js, delivering stable, scalable, and highly interactive platforms that improved overall user experience.
Led end-to-end development of the inventory and stock management module from scoping to production, enabling real-time tracking and precise inventory control that optimized operational efficiency.
Integrated WhatsApp Business API to establish a secure, two-way communication channel between patients, providers, and administrators, improving engagement and support responsiveness.
Built a scalable data management layer using GraphQL and Pinia, and developed a reusable component library that accelerated feature development and ensured UI consistency across the platform.
Applied performance optimization techniques including lazy loading and code splitting, reducing initial load times and improving overall application responsiveness.

Frontend Developer Intern at Radya Labs (2022-03 – 2022-05)

Developed and maintained a scalable Customer Management System (CMS) web application using TypeScript, React, and Next.js, ensuring type safety and enterprise-level maintainability across the codebase.
Implemented Zustand for global state management and Axios for real-time API integration, optimizing data flow and ensuring seamless client-server communication.
Enhanced application performance through lazy loading and code splitting, resulting in faster load times, while collaborating with cross-functional teams to translate technical specifications into reliable, on-schedule feature releases.

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