Hire the Best TypeScript Developers
in South Korea

Building production web applications is easy. Building ones that stay stable at scale, handle real users, and don't require constant babysitting — that's a different problem. That's what I focus on. I'm a full-stack developer based in Seoul with 3+ years building web platforms for international teams. My stack: React / Next.js on the frontend, NestJS / Node.js on the backend, PostgreSQL and MongoDB for data, Docker + AWS for deployment. Recent work: • Built a client management platform for a 4-country consulting firm — 40+ REST API endpoints, real-time Socket .io messaging, JWT auth with role-based access control, Docker / Nginx deployment with zero-downtime releases • Developed a product catalog and inventory system for a 2,000+ SKU electronics retailer — MongoDB aggregation pipelines cut query times by 60%, AWS EC2/S3 infrastructure I also integrate AI into web apps — OpenAI API, LangChain, Groq — for features like intelligent search, automated workflows, and AI-powered assistants. This is increasingly what clients need and where I spend a growing part of my time. What I build well: → Full-stack SaaS and business platforms → REST API backends with auth, RBAC, and real-time features → AI-powered features integrated into existing or new web apps → Automated workflows (n8n + custom integrations) → Production deployments — Docker, AWS, Nginx, CI/CD I communicate clearly, push updates regularly, and treat your deadline as my deadline. If your project needs a developer who can own the whole stack — from database schema to deployed UI — let's talk.

🚀 Senior AI & Full-Stack Engineer | Production-Ready AI SaaS I help startups, SaaS founders, and growing businesses transform ideas into production-ready AI applications. I build complete products-from architecture and backend development to AI integration, frontend implementation, deployment, and long-term scalability. My focus is on delivering real business solutions, not prototypes. Whether you need an AI-powered SaaS platform, an intelligent automation system, or a full-stack web application, I can take your project from concept to production. 🔧 Recent Projects Insurance-AI Built an AI-powered insurance platform featuring intelligent document analysis, automated policy workflows, quote generation, and claim processing. X-Laptop Modern e-commerce platform for laptop shopping with product filtering, order management, and user profiles. React.js + Express.js + MongoDB. 💼 What I Build AI-powered SaaS applications LLM integrations (OpenAI, Claude, Gemini) RAG systems and knowledge assistants AI chatbots and intelligent automation Document analysis and OCR workflows AI image generation platforms Shopify applications and e-commerce solutions REST & GraphQL APIs Admin dashboards Payment systems and subscription platforms Full-stack web applications Cloud-ready backend architectures ⚙️ Core Technologies Backend: NestJS · Express · FastAPI · Django · TypeScript · Node.js · Python Frontend: Next.js · React · React Native · Tailwind · TypeScript AI/LLM: Claude API · Gemini · OpenAI · RAG · LangChain · Embeddings · Vector Search · Prompt Engineering Database: PostgreSQL · Supabase · Redis · TypeORM · Prisma Payments & Auth: Stripe · Google OAuth · JWT · Clerk E-commerce: Shopify API (REST + GraphQL) · Shopify App Development · Meta Ads API · Google Ads API Infra & DevOps: Docker · Railway · AWS (S3, EC2) · Nginx · BullMQ · CI/CD Media: FFmpeg · Image processing pipelines 🤝 What You Can Expect ✅ End-to-end ownership-from planning and architecture to deployment ✅ Production-quality code that is clean, maintainable, and well-documented ✅ Clear communication with regular progress updates ✅ Scalable solutions designed for long-term growth ✅ Business-focused development that prioritizes reliability, performance, and user experience

🚀 Full Stack Developer | AI Integration (Next.js, NestJS, OpenAI) I build fast, scalable web apps and add smart AI features like chatbots and automation. 💡 What I can do: * Build full-stack apps (Next.js + Node.js) * Integrate AI (OpenAI, chatbots, APIs) * Fix bugs & improve performance I focus on clean code, clear communication, and delivering results — not overcomplicating things. 📩 Let’s build something useful.

Senior Software Engineer with expertise in LLMs, AI automation, and SaaS development. I help companies build intelligent systems that automate workflows, enhance user experience, and scale efficiently. I develop end-to-end solutions — from backend architecture to frontend interfaces — with seamless AI integration. My goal is simple: deliver high-impact, production-ready software that saves time and drives growth. Let’s build something powerful and scalable.

Full Stack Developer (Next.js, React, Go, FastAPI) building fast, scalable, SEO-optimized web applications and landing pages. I turn Figma designs into accurate, responsive interfaces and build backend systems that are stable, structured, and easy to maintain I help startups and businesses launch and improve web apps that load fast, rank well, and scale without breaking What I deliver: • Clean, responsive, optimized, and SEO-friendly websites • Fast load times and performance optimization (Lighthouse) • End-to-end development: frontend and backend • Clear communication and respect for deadlines Tech Stack: • Frontend: Next.js, React, Astro.js, Tailwind CSS, SCSS, HTML, CSS, JavaScript, TypeScript • Backend: Go, Node.js, Express.js, Python (FastAPI), PHP (Laravel), SQL • Databases: PostgreSQL, MySQL, SQLite, MongoDB • Tools: Docker, Git, Copilot, Vercel, Render, Prisma, Supabase, Firebase, REST API, OAuth What I can help with: • SaaS applications • Web applications & dashboards • Landing pages (SEO-focused) • MVP development • API development & integrations • Performance optimization Open to collaboration - if you need a website, web app, or design-to-code implementation, let’s discuss your project

🚀 Senior AI Engineer · 5+ Years Experience I build AI-powered SaaS products from zero to production. Not prototypes — real, deployed systems with users, payments, and scale. 🔧 RECENT BUILDS Static Engine — AI ad generation SaaS (Claude + Gemini, Stripe, Google OAuth). NestJS + Next.js + Supabase. Live in production. ROMIMI — AI fashion image pipeline. Multi-shot generation (6 types) with mood-aware prompting and reference analysis. NestJS + PostgreSQL + BullMQ. E-commerce Analytics Dashboard — Shopify + Meta Ads + Google Ads integration with AI-powered creative analysis. 23-table schema, 35+ API endpoints. ⚙️ STACK Backend: NestJS · Express · FastAPI · Django · TypeScript · Node.js · Python Frontend: Next.js · React · React Native · Tailwind · TypeScript AI/LLM: Claude API · Gemini · OpenAI · RAG · LangChain · Embeddings · Vector Search · Prompt Engineering Database: PostgreSQL · Supabase · Redis · TypeORM · Prisma Payments & Auth: Stripe · Google OAuth · JWT · Clerk E-commerce: Shopify API (REST + GraphQL) · Shopify App Development · Meta Ads API · Google Ads API Infra & DevOps: Docker · Railway · AWS (S3, EC2) · Nginx · BullMQ · CI/CD Media: FFmpeg · Image processing pipelines 🤝 HOW I WORK ✅ I own the full delivery — you describe, I architect, build, deploy. ✅ Daily async updates — you always know where things stand. ✅ Clean, documented code — the next developer will thank me. ✅ 100% Job Success · Top Rated · Fluent English Ready to build? Send me a message.