Senior Backend Developer | Technical Consultant | FinTech & Automation Systems
Remote (WFH) • Contract / Project-based
Senior Backend Developer with strong experience in production systems.
Specialized in backend architecture, RESTful APIs, financial systems (FinTech), and DevOps.
I’ve worked on:
- FinTech systems & API integration
- Library Automation Systems
- Smart Kiosk & Acquisition Module
- Production deployment (Ubuntu / IIS / Cloudflare)
Currently open to remote contract or project-based opportunities.
- NestJS, Node.js, TypeScript
- .NET Core, C#
- PostgreSQL, Oracle, MongoDB
- Supabase, Firebase
- Docker, Kubernetes
- RabbitMQ (Message Queue)
- Ubuntu Server
- Windows Server (IIS)
- Cloudflare
- JWT Authentication
- Penetration Testing
- Vulnerability Assessment
- Designed and developed RESTful APIs using NestJS and .NET Core
- Built backend services for fintech and enterprise systems
- Integrated Supabase and Firebase for realtime application features
- Deployed production systems on Ubuntu and Windows Server
- Led technical decisions and provided consulting support
- FinTech API System
- Library Automation Platform
- Acquisition Module
- RD System
- Tk Book Delivery System (Client and Staff)
- Smart Kiosk Backend
- SyncDB System (Sync Oracle <-> Solor)
- Border Report Backend (Tawai)
- Privilege System
- DB Check System (check structure of module before go live project)
- Optimize Helpdesk System
- Email: siwapan6395@gmail.com
- GitHub: https://github.com/KhunchayNe
- LinkedIn: https://www.linkedin.com/in/siwapan-boonthong-aa0b1b295
I’m available for:
- Backend development
- System architecture design
- API integration
- Technical consulting
- Contract / Freelance projects
Feel free to reach out if you'd like to collaborate!