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From: South Korea

Location: Ansan-si, KR

On Useme since today

About me

Full-stack developer in South Korea (UTC+9), fully remote, working in English.

What I build: - Web apps end to end: Next.js, React, TypeScript, Node.js, Python (Django, FastAPI), PostgreSQL. - LLM integration: summarization, classification and extraction pipelines, RAG search, with caching and cost control. - Automation and data: web scraping, ETL pipelines, scheduled collectors, REST APIs, Docker, Kubernetes.

Background: full-stack engineer at a B2B SaaS company in Korea building high-availability failover software for enterprise clients (multi-node split-brain resolution, a legacy-to-Spring Boot + React migration). Also a stock-portfolio web app with real-time market data crawling on Kubernetes, two live services I run myself on Cloudflare Workers, and two commercial deliveries on a Korean freelance platform.

How I work: scope written down before code starts, short operations docs with every delivery, and I say upfront what I cannot honestly deliver.

Rate: from USD 60/hour (USD 80/hour for AI

Categories

CV / Résumé

Jan 2024 - Sep 2026

Full-Stack Engineer

B2B SaaS company (South Korea)

High-availability (HA) failover software for enterprise clients. Multi-node split-brain resolution logic, a legacy-to-Spring Boot + React migration, an OpenJDK security upgrade and an Apache Camel migration. Java, Spring Boot, React, TypeScript, Dock

Mar 2022 - Sep 2026

Freelance Developer

Freelance (independent)

Web and automation projects for small clients alongside study and employment: Next.js/React front ends, Python (Django, FastAPI) back ends, web scraping and ETL pipelines, LLM integrations. Two commercial deliveries on a Korean freelance platform.