Harper
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B2B AI

Senior Software Engineer, AI Agents (L5) — Founders & Founding Teams Welcome

Full-timeSenior · 8–10+ years🇰🇷 Seoul

Senior (8–10+ yrs) agent engineer for the Korea founding team. Founders and whole founding teams welcome. Top-of-market pay for Korea.

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About The Job

This role is open in the Korean market right now. Harper is an AI career agent that works for you — the candidate. Skip the application form: just talk to Harper about where you are and what you want next, and Harper connects you with this role and other frontier roles worth your time.

Job Title

Senior Software Engineer, AI Agents (L5), Korea Founding Team

Location

Seoul, on-site. Day-to-day work is in Korean; English is needed only to communicate with management.

Compensation

Top of the Korean market: the salary band sits above what leading Korean tech companies pay for the same level, plus a significant equity grant. Bands are set per level so everyone on the team is paid consistently.

Company Description

A platform built to enable every company in the world to build better, more human customer experiences with AI. It partners with industry leaders across telecommunications and media, commerce, financial services, and healthcare. Primarily an in-person company based in San Francisco, with growing offices across North America, Europe, and Asia — and now opening in Korea.

Its co-founder currently serves as Board Chair of OpenAI. Previously he was co-CEO of Salesforce and CTO of Facebook.

The company raised close to $1B in its most recent round, at a valuation above $15B.

Founders & Founding Teams Welcome

If you started a company after 2024 and are deciding what comes next, this team wants to talk — including as a team. They have hired a whole founding team in another APAC market before and are open to doing it again in Korea. Co-founders can be introduced together and evaluated together.

What You'll Do

  • Design and deliver production-grade AI agents: Build and ship highly performant, reliable, and intuitive AI agents that are mission-critical and drive revenue directly. Not prototypes — scalable systems running in production across finance, healthcare, telecom, and commerce.

  • Own the Agent Development Life Cycle (ADLC): Complete ownership from pilot through deployment and continuous iteration, defining ADLC best practices for the Korea team.

  • Partner with Korea's largest enterprises: Work directly with leaders at major Korean enterprises to understand their most pressing problems and build agents that change how they operate at scale.

  • Shape the platform: Your customer work guides the evolution of the core platform — surface unmet needs, prototype new tools, and collaborate with research, product, and platform teams.

Who You Are

  • 8–10+ years of hands-on engineering; you still ship code every week

  • You come from a smaller, zero-to-one environment — an early-stage startup, your own company, or a small AI team — rather than a big-tech role where you were far from the product

  • Experience building and scaling end-to-end production systems, ideally with LLM or agent systems in production

  • High agency: a builder and tinkerer who finds creative ways to overcome obstacles and ship

  • Comfortable working directly with customers

  • Fluent Korean for daily work; working English for management communication (lower-end English is fine if you can communicate with your manager)

Interview Process

  1. Recruiter screen

  2. Coding interview

  3. Virtual on-site: debugging + agent building (a take-home brief about a week before — you build an agent to a spec using LLMs, then demo and extend it live). Mostly in Korean.

  4. Conversation with the Head of Engineering for APAC (English)

A fixed, dedicated set of interviewers runs the Korea loop so candidates are calibrated consistently.

Why Join

  • Found the Korea engineering team of a $15B company, with a product already live at global enterprises

  • Top-of-market pay for Korea: a salary above leading Korean tech companies for the same level, plus a significant equity grant

  • Flexible (unlimited) paid time off, medical/dental/vision for you and your family, parental leave, fertility and family-building benefits, lunch and snacks, and a discretionary benefit stipend

  • Eligible full-time employees participate in the company's equity plans, subject to the applicable plans and policies

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.

    What happens after I accept a role?

    Harper prepares your profile and relevant experience for an introduction to the company and helps make the connection. Your profile is shared according to your settings and consent, and Harper keeps you updated by email.

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