Senior Full-Stack Engineer

Eurosoft; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

Eurosoft is seeking a senior full-stack engineer to deliver features across the full stack, from database design to polished user interfaces, for enterprise LLM and RAG products in South Korea.

You will build with React, Next.js, and TypeScript, implement server-side logic in Python or Node.js, and work with PostgreSQL to support data needs. Korean residency and English fluency are required, with Korean language a plus.

Qualifications

• Five years of full-stack development experience.
• Strong React, Next.js, and TypeScript skills.
• Backend development experience with Python or Node.js.
• Experience working with PostgreSQL.
• Valid Korean residency documentation and good working English; Korean is an advantage.

Responsibilities

• Build features across frontend, backend, and data layers.
• Develop interfaces with React, Next.js, and TypeScript.
• Implement server-side functionality using Python or Node.js.
• Work with PostgreSQL to support application data needs.
• Contribute to AI product features such as chat, search, or agents where relevant.

Skills

Full-stack development

React

Next.js

TypeScript

English

Tools

PostgreSQL

Python

Node.js

Job description

Role overview

Deliver product features across the full stack, from database design and backend services through to polished user interfaces. The role supports private language-model and retrieval-augmented generation (RAG) products used by enterprise clients in South Korea, with ownership spanning implementation and delivery.

Responsibilities

• Build features across frontend, backend, and data layers.
• Develop interfaces with React, Next.js, and TypeScript.
• Implement server-side functionality using Python or Node.js.
• Work with PostgreSQL to support application data needs.
• Contribute to AI product features such as chat, search, or agents where relevant.

Requirements

• At least five years of full-stack development experience.
• Strong React, Next.js, and TypeScript skills.
• Backend development experience with Python or Node.js.
• Experience working with PostgreSQL.
• Valid Korean residency documentation and good working English; Korean is an advantage.

Nice to have

• Experience shipping LLM features, including chat, search, or agent workflows.

Benefits and work setup

• Full-time contract with market-level compensation based on experience.
• Work on private LLM and RAG platforms for enterprise clients in South Korea.
• Join a small, experienced team and work directly with its CEO.