Harper
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AI / Solutions

Senior/Staff 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
Senior/Staff Applied AI Engineer, Full-Stack

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

Location
Seoul (On-site)

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 and own the integration end to end.
  • Design and ship scalable full-stack systems where front-end and back-end actually fit together.
  • Build the hardest customer use cases and get them to production accuracy.
  • Set the technical bar and level up the engineers around you.
  • Push field learnings back into the product with research and product teams.

Who You Are

  • 5+ years as a hands-on IC on cutting-edge tech.
  • Strong in Python and TypeScript; comfortable across React / Next.js / Vue and Node.js.
  • Deep software fundamentals — design patterns, data structures, algorithms.
  • You can explain a gnarly tradeoff to an engineer and a CTO in the same meeting.
  • Fluent in English.
  • Bonus: LLM/GenAI experience, open-source contributions, or a Forward Deployed / Sales / Solutions Engineer or Technical PM background.

Why Join

  • Build on genuinely open-weight frontier models, as a senior engineer on the ground.
  • 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.

How Harper Works

  • Sign up and talk to Harper.

    Tell Harper about the work you've done and the kind of environment you'd like to work in next.

  • Show interest in a role you like.

    Harper will review the role and assess how well it fits you, using information the company has shared privately with Harper.

  • Harper connects you with the company.

    If it looks like a good fit, Harper may recommend you to the company first or ask whether you'd like to move forward with the role, depending on your settings. If you say yes, Harper helps make the connection right away.

  • Keep the door open while you work.

    Harper keeps looking for opportunities that match what you want and suggests new connections. You don't have to be actively job searching. You can consider each company's proposal before deciding whether to move forward, and Harper will help you through the process.

    • FAQ

    Are these real job opportunities?

    Yes. These are roles companies have asked Harper to help with, and Harper is in direct contact with them.

    Am I applying directly here?

    No. Harper uses information the company has shared privately to assess how well the role fits you. If it looks like a good fit, Harper may recommend you to the company first or ask whether you'd like to move forward with the role first. If you accept, Harper helps make the connection right away. For now, tell Harper which role interests you. Harper will review it first and prepare what it needs to introduce you well.

    How is this different from applying directly to the company?

    You're more likely to reach a meeting, and Harper helps you through the process.

    Will my information be shared with the company?

    You can choose between two approaches. With Exceptional only, Harper shows you a strong opportunity first and shares your profile with the company only after you accept and allow profile sharing. With Open to matches, Harper may introduce your profile to a company first when there's a strong fit. This can lead to more opportunities, and you can review the company's proposal before deciding whether to move forward.

    What if I'm not looking to move right now?

    That's fine. Tell Harper you're not planning a move right now. You can look at a proposal you like and decide then.

    Does a person review my profile along the way?

    Harper Agent reviews the fit first. Before an introduction to a company, a Harper team member gives the connection a final check. Your profile is shared with the company according to your settings and consent.

    Put your career
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    Harper finds your next job and helps you land it

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