// aka Mike · github.com/MakhmudSD
AI / Agentic AI Engineer with 4+ years of software engineering experience across EdTech, e-commerce, and SaaS — LangGraph agent orchestration, RAG pipelines, and document intelligence systems, shipped end-to-end as a full-stack developer owning both backend APIs and frontend delivery. Led a 5-person engineering team in South Korea, driving client delivery and AI-driven feature development.
About
I'm an AI / Agentic AI Engineer based in Suwon, South Korea, with full-stack ownership from backend APIs to frontend delivery. Over the past 4+ years I've built production systems across EdTech, e-commerce, and SaaS — full-stack engineering throughout, with the most recent stretch focused on RAG pipelines, document intelligence platforms, and AI feature integration, including two AI products I designed and built solo end-to-end.
I'm currently an AX Engineer at Langcode, working across the full stack on a Fortune Global 500 semiconductor manufacturer's internal AI Transformation platform — contributing to a Magentic-based agent data pipeline, adding OpenTelemetry-based distributed tracing into the backend's Serilog pipeline on a C#/.NET stack, working with a separate FastAPI/Python OpenSearch service, and refactoring a frontend where logic was scattered across inline hooks into grouped, reusable custom hooks with centralized error handling.
Before that, at Ainex Lifetime Education, I was promoted from Developer to Team Lead, managing 5 engineers across 18 client maintenance projects. I handled LiveKit-based live classroom infrastructure, PayApp payment integrations, and Apache server operations — while keeping client satisfaction high and systems stable.
Earlier in Korea, I worked as a Junior Frontend Engineer at Levelupsoft (Gwangju), maintaining a large food delivery platform, then as a full-stack developer at BTREE (Jeonju), building internal tools and client platforms with Next.js, NestJS, and GraphQL.
I hold an E-7 Skilled Worker Visa, am fluent in both Korean and English, and am open to remote or on-site engineering roles worldwide.
Technical Skills
Experience
Langcode · Enterprise AI Transformation (AX)
Ainex Lifetime Education · Yongin, Gyeonggi-do · On-site
BTREE · Jeonju, South Korea · Software Development & IT Consulting
Levelupsoft Inc · Gwangju, South Korea · Digital Solutions
와이랩스 · Yeosu
Projects
A self-initiated agent orchestration platform, inspired by real enterprise approval workflows, where employees describe requests in plain language and a LangGraph orchestrator routes them through policy retrieval, LLM-driven drafting, and a three-tier role-based approval chain (Requester → Approver → Admin), with every state transition persisted to Postgres. Deployed live on Vercel/Render/Supabase with real per-call token/cost tracking. Root-caused and fixed a cross-site authentication cookie bug in production. Backend runs on Render's free tier; cold start after idle takes ~79s, confirmed via direct HTTP timing.
Solo-built a full-stack RAG SaaS platform in under a week. Users upload documents (up to 50MB) and query them via natural language. Supports 5 languages (EN, KO, RU, UZ, JA), subscription tiers (Free / Pro / Business), referral system, FAQ support portal, and admin health dashboard with pgvector-backed vector store monitoring.
Freelance-built booking platform for a private luxury villa business in Yeosu — replaces manual phone/DM bookings with a self-serve reservation flow. Real-time availability calendar backed by Supabase, a Toss Payments deposit flow to cut no-shows, trilingual UI (EN/KO/UZ) via next-intl for both local and international guests, and a full admin console (booking control, occupancy/RevPAR analytics) with instant Telegram alerts plus email notifications the moment a new reservation comes in.
Full-stack jewelry marketplace with real-time WebSocket notifications, multilingual support (Korean, English, Uzbek), GraphQL-powered dynamic URL filtering, built-in payment cart, community features, and a comprehensive admin panel. Deployed on Vercel (frontend) and Railway (backend).
E-commerce platform for a local perfume store with store registration, product management, order tracking, and Redux Toolkit cart. Includes a separate admin panel built with EJS and Node.js. Deployed on Linux VPS with PM2 and Nginx.
Education & Languages
Contact
Open to remote full-stack or team lead roles with US, European, and Asian teams. Feel free to reach out anytime.