Web application securing QR codes and embedded documents with dual digital signatures and time-based encryption. Each scan verifies where the code originated and rejects it once its validity period has passed.
- Nuxt
- Cryptography
- REST API
Ridwan M. Raihan
Backend Developer
Backend-focused informatics graduate building REST APIs and full-stack applications, with research experience in applied cryptography.
// Education
Bachelor of Informatics (S1)
Focused on Jaringan, Digital, dan Forensik (JKF), especially on cryptography.
- Informatics
- GPA 3.74/4.00
// Experience
Research Assistant
Implemented a web-based research system securing QR codes and embedded documents, built with Nuxt 4 and exposing 12 REST API endpoints for document issuance and verification.
- dual digital signature
- time-based encryption
- QR code
- embedded document
- REST API
Full Stack Web Developer
Built a budget and goods management system for the kitchen operations of the SPPG MBG program with a Go, Fiber, GORM, and PostgreSQL backend, 35 REST API endpoints, and role-based access control.
- Go
- Fiber
- GORM
- PostgreSQL
- role-based access control
- row-level locking
- React
- TanStack Query
Backend Developer Intern
Built the REST API backend for an archive system with JWT authentication, role-based access control, file search, archive request submission and tracking, and history management using Go, Echo, GORM, and PostgreSQL.
- Go
- Echo
- GORM
- PostgreSQL
- JWT
- layered architecture
- UML
// Projects
Budget and goods management system for a catering kitchen with 35 REST API endpoints, role-based access control, finance and raw-material inventory modules protected by row-level locking, and analytics dashboards.
- Go
- Fiber
- PostgreSQL
- React
- TypeScript
- TanStack Query
Journal article in ULTIMATICS (SINTA 3) presenting a hybrid ECDSA and ML-DSA signature scheme for transaction authentication on an Ethereum-compatible blockchain, with an oracle as off-chain helper and security tests rejecting forgery, replay, and stripping.
// Skills
// Blogs
// Let's Work Together
Hiring a Backend Engineer? I'm open to full-time or contract, hybrid, remote, or onsite in Indonesia.