Full-stack Builder (IT / AI)

Position

• Position: Full-stack Builder (IT / AI)

• Reports to: CEO (direct report)

• Work type: Full-time / contract (negotiable)

• Location: Jung-gu, Seoul (near Dongdaemun History and Culture Park Station) + Remote available

Who We're Looking For

We are looking for someone who will go beyond amplifying individual AI productivity and lead the ‘Agentic Native’ operation of the entire organization. We are waiting for a builder who will rebuild the most analog fashion industry into a 'digital twin' based on dynamic ontology and complete a resource allocation (quant strategy) system that maximizes profits by utilizing internal and external data.

Key Responsibilities

• Building Agentic OS: Design and operate an AI agent orchestration system — transform all workflows within the company into agent-native

• Fashion industry digital twin: Build a decision support system by structuring brand, product, customer, and trend data based on ontology/knowledge graph.

• Quant-based resource allocation: Designing an optimal resource allocation system using internal and external data (sales, inventory, trends, competitors)

• Ecommerce Data Pipeline: Establishment of e-commerce platform API linkage and natural language inquiry system such as cafe24, Musinsa, Cellmate, etc.

• Upgrading your in-house automation bots: Maintain and expand in-house repetitive task automation systems such as Slack bot, n8n workflow, and email automation

• Website/Frontend: Cafe24, Shopify, in-house website front-end maintenance and new feature development

• SaaS extensions: In the mid to long term, monetize by expanding the internal system to SaaS (opportunity to acquire shares in subsidiaries is open)

tech stack

• Languages: TypeScript, Python

• Frontend: Next.js, React, Tailwind CSS

• Backend/Infra: Supabase, PostgreSQL, Docker, GCP/AWS

• AI/LLM: Claude API, OpenAI API, LangChain, n8n

• Data: Neo4j (Knowledge Graph), Vespa (Vector Search)

Qualifications

• At least 3 years of full-stack development experience or someone who can prove equivalent skills

• Advanced level of AI/LLM utilization — Experience with agent design, RAG, and fine tuning beyond prompt engineering.

• System design capabilities — Those who can design and implement scalable architectures on their own.

• Automation Mind – Those who find repetitive tasks impatient and automate them.

• Those who have consistent commits on their personal GitHub (more than 50% grass space)

Preferred Qualifications

• Fashion/e-commerce domain experience or strong interest.

• Experience in knowledge graph/ontology design and implementation.

• Experience contributing to open source projects

• 0→1 building experience in startups

• People who are crazy about tech and new technologies and subscribe to three or more AI newsletters

special conditions

• Opportunity to acquire equity in SaaS subsidiaries: There is an open structure for acquiring subsidiary shares in the process of developing internal systems into SaaS.

• Autonomous technical decision-making power: We autonomously make technical decisions such as technology stack selection, architecture design, and tool introduction.

Benefits & Perks

1. Environment for maximum work efficiency

· Flexible start time between 8:00 and 10:00 a.m.

· Remote work support for focused work

· Flexible leave system in 30-minute increments

· Premium massage chair and coffee machine

2. Support for family and culture

· Employee discounts on 2000Archives products

· Parents' Day carnation delivery

· Choose your own holiday gift for Lunar New Year and Chuseok

· Half-day off on your birthday

3. Support for growth

· Support for masterclasses from leaders such as Anna Wintour and Marc Jacobs

· Support for job-related books and online/offline courses

· Review of incentives and stock options based on performance

Hiring Process

Document screening → Online test → 1st interview (working-level team) → 2nd interview → Compensation discussion → Final offer

· Additional interviews or coffee chats may be held depending on the position.

· If necessary, reference checks may be conducted.

Application Materials

· Free-form resume (including career details)

· Portfolio or GitHub profile