Ashandi Leonadi

Software Fullstack Engineer with over 5 years of experience building modern web and mobile applications. Specialized in AI-powered features including OpenAI integration, Retrieval-Augmented Generation (RAG) with vector search, offline-first architectures, and real-time systems. Proficient across the full stack using React.js, Next.js, Laravel, Supabase, and TypeScript, with a strong focus on delivering intelligent, production-ready solutions that leverage Large Language Models (LLMs), automated document generation, and conversational AI.

Product Software Engineer (Fullstack) at MapTrack (2024-10 – Present)

• Built an OpenAI-powered PDF generation system for custom forms, enabling dynamic form creation, intelligent content structuring, and automated document output, reducing manual form preparation time significantly.
• Refactored the data layer using TanStack DB to support an offline-first architecture, improving reliability and user experience in low-connectivity field environments.
• Developed GPS battery monitoring and device status indicators backed by Amazon DynamoDB, enhancing real-time fleet visibility and device reliability for asset tracking operations.
• Designed and implemented an interactive asset map with marker collision handling, filter integration, and a detail drawer for streamlined fleet management workflows.

Frontend Web and Mobile Engineer at Happy5 (2021-03 – 2024-12)

• Led frontend code reviews and mentored intern engineers, improving code quality standards and accelerating onboarding for new team members.
• Migrated legacy JavaScript codebases to TypeScript across multiple modules, reducing runtime errors and improving long-term maintainability.
• Translated Figma mockups and wireframes into pixel-accurate, interactive web pages using React.js, Tailwind CSS, and TypeScript.
• Implemented end-to-end testing with Cypress, increasing test coverage and reducing regression bugs in production releases.
• Built and documented a reusable component library with Storybook, enabling faster feature development and design consistency across teams.
• Managed Amplitude analytics integration, providing data-driven insights into user engagement and feature adoption.
• Developed the Happy5 Culture mobile application using React Native with Tailwind CSS, delivering a consistent cross-platform design system.

Frontend Web Engineer at Kodegiri (2024-03 – 2024-06)

• Revamped the VRMS web application with a modernized UI and new feature set using React.js, Ant Design, and Tailwind CSS.
• Migrated the existing JavaScript codebase to TypeScript, improving type safety and developer experience.

Frontend Web Engineer at Rakamin Academy (2022-03 – 2022-04)

• Implemented UI designs into production-ready React components, integrating with backend services via React Query for optimized data fetching and state management.
• Styled the application using Styled Components, ensuring consistent and maintainable theming across all pages.

Frontend Web Engineer at Smarteschool (2021-07 – 2022-02)

• Developed new features and revamped legacy pages in a Next.js application, improving performance and aligning the platform with modern UX standards.
• Created reusable API utility functions and conducted code reviews to maintain high code quality and promote consistency across the team.

Frontend Web Engineer (Intern) at Happy5 (2020-05 – 2021-03)

• Built a PDF document generation feature for formal review results using @react-pdf/renderer, streamlining the performance review export process.
• Wrote end-to-end tests with Cypress and resolved bugs to improve application stability ahead of production releases.
• Integrated frontend components with backend services, ensuring seamless data flow for core HR features.

Bachelor of Information Systems in Information Systems – Binus Online Learning (2022 – 2026)

Vocational High School Diploma in Network Informatics Systems and Applications – Vocational High School 26 Jakarta (2017 – 2021)