Nattapol Singhad #DIS

Developed the core authentication interfaces, including the Login and OAuth authorization pages, for the Ministry of Public Health's national digital identity platform. Translated Figma designs into secure, responsive user interfaces to facilitate citizen access to nationwide healthcare services under the "30-baht healthcare" policy.

Designed and implemented multiple web applications for medical personnel identification, patient health record (PHR) management and census information. Developed key functionalities, including admin dashboards, admin management, digital signature integration using digital certificates and implemented the OAuth 2.0 system for the Provider ID.

Designed and enhanced an API request management platform used for Health ID and Provider ID services. Built administrative dashboards, error monitoring, document handling, and system configuration features across frontend and backend. Improved system usability and branding, including UI refinements and platform assets.

Set up project architecture and frontend structure for a service provider registration platform. Implemented onboarding and registration features for traditional massage service providers.

Developed a legal registration and identity verification system for ride-hailing drivers (Driver Verify). The platform allows drivers to register via the ThaID application or manual data entry to obtain official certification for public transport vehicle registration with the Department of Land Transport. Implemented OTP-based authentication, password recovery, and consent management features.

Developed a digital contract management system supporting both B2B and B2C workflows. Implemented user profile management, contract tracking, and digital signature features. Built interfaces for contract status monitoring and system usage information.

Designed and developed an identity federation and service management platform for organizations and business entities. Integrated multiple identity providers (IdPs) such as ThaID, SAML-based providers, Microsoft Azure AD, LINE, ONE ID, and MOPH DID. Enhanced security and interoperability for enterprise authentication and single sign-on (SSO) services.

Designed and developed a centralized identity verification and onboarding platform for services integrated with the ONE ID ecosystem. Built user onboarding and account linking mechanisms for users without existing ONE ID accounts. Integrated with User Management (UM) systems to provision and synchronize user information.

Designed and implemented backend APIs for a travel booking and referral platform supporting four roles: admin, partner, driver, and tourist. Built core systems including booking management, referral tracking, payouts, accounting, and automated receipt generation. Integrated Stripe, PromptPay, Google Pay, Apple Pay. Deployed on DigitalOcean App Platform with monitoring via Sentry and Cloudflare Workers.

Classroom, student, course, and material management modules. Server-side pagination with TanStack Table. Type-safe validation with React Hook Form + Zod. Authentication via NextAuth.

Develop Front-end using ReactJS, NextJS. Develop Web Service (Microservice) using ExpressJS, GraphQL, gRPC, Protobuf.

Develop Front-end using ReactJS. Conducted comprehensive unit testing using Jest for code functionality and enhanced code quality.

Automated testing processes using Robot Framework.