WIDODO

WIDODO is a backend developer. Backend Developer with 2+ years of professional experience building scalable backend systems and production-grade APIs using NestJS, ExpressJS, PostgreSQL, Prisma, Redis, and Docker. Experienced in developing payment infrastructure, ISP operational systems, AI-powered applications, and automation platforms with strong focus on backend architecture, API security, system optimization, and production reliability. Skilled in handling transaction workflows, race condition prevention, real-time processing, and production deployment in operational environments.

Selected Projects

• Balesin- WA RAG Chatbot — WhatsApp RAG AI Assistant Platform [Live]
• Payment Gateway Middleware | Internal Company Project — application is a platform for payment orchestration and ERP integration
• CryptoSpike — Crypto Trading Automation & Analytics Platform [Live]
• Ucansee — Your Digital Identity, Beautifully Crafted, Create and share your beautiful digital cards easil... [Live]

Recent Notes

• Panduan Mengamankan Panel Dokploy di VPS Publik Menggunakan SSH Tunneling & iptables — Jika Anda menjalankan **Dokploy** di VPS publik (seperti Ubuntu) menggunakan Docker Swarm, secara *d...
• Debugging Server: Membaca Log (PM2, Docker, Nginx) & Troubleshooting Jaringan — Pernahkah Anda mengalami situasi di mana aplikasi tiba-tiba *down*, layar pengguna hanya menampilkan...
• SOP Deployment & Rollback (NestJS, Prisma, PostgreSQL) — Panduan langkah demi langkah untuk melakukan *deployment* ke server *production* menggunakan metode...