I’m a software developer with 6+ years of real-world experience building full-stack applications, scalable backend services, and production-grade systems.
My expertise covers modern development across:
- Web Development: React, Next.js, TailwindCSS, SCSS, jQuery
- Mobile Development: React Native
- Backend Engineering: Golang (concurrency, middleware, Redis Streams, pub/sub, worker consumers), PHP (Laravel, Yii2)
- Databases: MySQL, PostgreSQL (JSON, migrations, joins, optimization)
- Infrastructure & Tools: Docker, Redis, Git, SSH, API design
- Other: Blockchain/Web3, system design, rate limiting (token bucket), security basics
I enjoy solving complex technical problems, designing clean architectures, and continuously improving through learning and experimentation.
I'm building a complete ticketing platform, including:
- Ticket booking & registration
- Check-in / Check-out
- Badge printing
- Notification system (Email, WhatsApp, Webhook, Push)
- Reporting dashboard
- Integrations (Duitku, PayPal, Firebase)
Used in big events:
- JITEX
- Indonesia Retail Summit
- INABuyer
A complete event & ticketing ecosystem.
Features:
- Event creation
- Ticket sales & registration
- Badge generation
- Payment Gateway integration
- Multi-channel notifications (email, WhatsApp, webhook)
Tech Stack:
Yii2 · Firebase · PayPal · Duitku · MySQL
A dashboard for sellers to manage their operations.
Features:
- Real-time order updates
- Outlet & payment management
- Product & promo controls
Tech Stack:
Yii2 · MySQL · Firebase
Cross-platform app for order management.
Tech Stack:
React Native · Firebase · Yii2
Go · PHP · JavaScript · TypeScript · Java
- Golang (REST API, middleware, concurrency, worker consumers, context)
- Redis Streams (publisher/consumer)
- Token Bucket Rate Limiting
- Queue processing
- PostgreSQL optimization
- API design (request validation, error handling)
- React
- Next.js
- TailwindCSS
- SCSS
- shadcn/ui
- Zustand
- Custom Hooks Architecture
- Bootstrap
- jQuery
- React Native
- Expo
- Mobile routing & API integration
- PostgreSQL
- MySQL
- JSON columns
- SQL join optimization
- Migration management (Go-Migrate)
- Docker
- Redis
- Git & SSH keys
- Build pipelines (Go build, Node build)
- Linux environment (Ubuntu, Kali, PopOS)
- Reconnaissance basics
- Network fundamentals (OSI Model, Hub, WiFi concepts)
- Linux pentesting basics
- Security mindset & threat modeling
- Wallet flow understanding
- Smart contract basics
- Tokenomics understanding
- Crypto trading psychology
- Golang Middleware (full-stack implementation)
- Redis Streams with priority queue (High/Medium/Low channels)
- React Native application structure
- Java OOP for academic assignments
- Professional Git workflow (SSH key auth, branches, push fix)
- Rate limiting algorithm (Token Bucket)
- System design (notification architecture)
- Email: fharhanamrin028@gmail.com
- LinkedIn: https://www.linkedin.com/in/fharhan-amrin-b68a06143/
- YouTube: https://www.youtube.com/@tempatbelajarbersama
⭐ Thanks for visiting my GitHub!
Always open for collaboration, freelance opportunities, or discussions about tech.