Backend / Full-Stack Engineer · Bangkok, Thailand

~5 years building production backend services and full-stack features across fintech, AI/LLM web apps, e-commerce, telecom, and IoT. Currently at NEVERSITUP, delivering features across a ~25-service NestJS/Next.js fintech platform — and integrating LLMs (GPT, Claude) with RAG and agentic frameworks into production apps.

🔭 Backend-focused: Node.js / NestJS · PostgreSQL · AWS ECS · Terraform · clean-code & SOLID 🤖 LLM / agentic AI: GPT & Claude via OpenRouter · RAG (ChromaDB) · CrewAI multi-agent · Claude Code skill/agent building 📫 work.narinthon.so@gmail.com · LinkedIn

Languages — TypeScript · JavaScript · Python · C/C++ · C# · PL/SQL · Shell Backend & Web — Node.js · NestJS · Express · Flask · Next.js · React · Microservices · Socket.io AI / LLM — LLM integration & orchestration · RAG · CrewAI · ChromaDB · Prompt Engineering · n8n Data — PostgreSQL · MySQL · Oracle · Redis · Prisma · TypeORM · Sequelize Cloud & DevOps — AWS (ECS/EC2/S3/SQS/CloudWatch) · Docker · Kubernetes · Terraform · GitHub Actions · CI/CD Testing & APIs — Jest · unit/integration/e2e · REST · OpenAPI/Swagger · Postman

• Contract e-signing lifecycle (juzmatch fintech) — end-to-end OMS + deal-service + Codium flow; cut contract turnaround from days to minutes across 200+ contracts/month.
• Referral → CRM pipeline — referral form → backend → Pipedrive deal creation.
• AWS ECS delivery — tag-based GitHub Actions DEV/QA pipelines; service config as Terraform IaC (PR-reviewed).
• Agentic-AI platform — AI agents role-play a full software team (analyst/backend/frontend/QA) turning specs into runnable code. NestJS + Prisma + CrewAI.
• MTP e-commerce — 100+ NestJS microservice APIs (Omise payments, orders, carts, back office), live at mtpgold.co.th.
• cv-tools — Claude Code skills + a Markdown→docx→pdf resume pipeline (this kind of AI-tooling work).

Most production code above is in private/client repos — happy to walk through architecture on request.

crewAI Multi-Agent Systems (DeepLearning.AI ×2) · Claude 101 (Anthropic) · NestJS Complete Guide · SOLID & Clean Code (Udemy) · Back End Development & APIs, Relational Database (freeCodeCamp)

🎓 B.Eng. Computer Engineering — RMUTI Khon Kaen · GPA 3.52/4.0