Harper
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AI

Applied AI Engineer, Full-Stack

Full-time🇰🇷 Seoul

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About The Job
The client is hiring for this role. Harper is an AI career agent that works for you — the candidate. Skip the application form: just talk to Harper, and it puts strong candidates straight in front of the client — plus other frontier roles worth your time.

Job Title
Applied AI Engineer, Full-Stack

Salary
Competitive base + Equity — top-tier comp at a world-leading AI lab

Location
Seoul (Hybrid)

Company Description
One of the world's most important AI labs — European, building open-weight, open-source frontier models that go head-to-head with the best closed labs. They train the models, not wrap them. Teams across France, the US, UK, Germany, and Singapore — now building in Seoul. Low-ego, ship-fast, research-meets-production.

What You'll Do

  • Take frontier models into real enterprise software — you own the integration end to end.
  • Design and ship scalable full-stack apps where the front-end and back-end actually fit together.
  • Build complex customer use cases and get them running in production, not just in a demo.
  • Work shoulder-to-shoulder with researchers, AI engineers, and product engineers — and push their feedback back into the models.

Who You Are

  • 2+ years as a hands-on IC on hard technical problems.
  • Strong in Python and TypeScript.
  • Comfortable across the stack — React / Next.js / Vue on the front, Node.js on the back.
  • You know your fundamentals — design patterns, data structures, algorithms — and when to ignore them.
  • You can explain a gnarly technical tradeoff to an engineer and a CTO in the same meeting.
  • Fluent in English and Korean.
  • Bonus: you've shipped with LLMs/GenAI, contributed to open source, or worked as a Forward Deployed / Sales / Solutions Engineer or Technical PM.

Why Join

  • Build on genuinely open-weight, open-source frontier models — the ones people actually fine-tune and self-host.
  • Bring frontier AI to Korean enterprises from the front line.
  • Work directly with a global team across France, the US, UK, Germany, and Singapore.
  • Low-ego, ship-fast culture. Competitive comp + equity.