Latest AI JobsBrowse Jobs
bjakcareer logo

Product Engineer, AI Email App

bjakcareerSeoul, KoreaActAI Engineering
Apply on company site
Salary
Not listed
Job type
Full-time
Work mode
Remote
Experience
Senior
Posted
28 Sept 2026
Status
Open · checked 7d ago

About this role

In Seoul, Korea, bjakcareer seeks a Product Engineer for an AI Email App to build proactive, AI-native applications for everyday tools like email and calendar. This hands-on position suits a technical professional who can bridge user needs, model capabilities, and engineering constraints.

Role Overview

Operating in Seoul, Korea, the Product Engineer, AI Email App works at the intersection of user requirements, model capabilities, and engineering limitations. The professional collaborates directly with machine learning and engineering units to establish system behavior, measurement metrics, and continuous improvements. This position requires deep technical involvement to understand architecture and challenge technical choices.

Key Responsibilities

Determine end-to-end specifications for artificial intelligence functions, covering model performance, system operation, and user experience.
Translate model capabilities, assessment outcomes, and engineering boundaries into precise product and system choices.
Balance trade-offs involving quality, latency, expenses, reliability, safety, and user experience.
Cooperate closely with machine learning, backend, and client engineers regarding system architecture, evaluation, and iteration.
Establish and expand assessment frameworks utilizing offline metrics, online experiments, and human feedback.
Formulate specific quality standards and feedback loops for artificial intelligence-driven interactions.
Direct execution through clear specifications, prioritization, and robust technical judgment.
Identify system failure modes to guarantee predictable artificial intelligence behavior and graceful recovery.
Manage product quality end-to-end, maintaining correctness, reliability, usefulness, and user trust.

Requirements

Possess strong computer science fundamentals and system design capabilities.
Demonstrate solid comprehension of modern machine learning and production behavior for artificial intelligence systems.
Display comfort in reading technical designs, interpreting architectures, and engaging technically with engineers.
Exhibit strong intuition regarding model limitations, hallucinations, evaluations, and failure modes.
Show significant background in managing complex, technical products end-to-end.
Bring hands-on experience handling artificial intelligence-driven products, specifically large language model systems.
Hold experience with model evaluation, experimentation, prompting, or artificial intelligence system iteration.
Prove capability in converting ambiguous challenges into precise requirements, measurable outcomes, and executable plans.
Maintain strong judgment for decision-making when optimal answers are not immediately obvious.
Demonstrate a strong bias toward shipping, experimentation, and learning from real-world usage.
Operate effectively with significant ownership inside a fast-moving, zero-to-one environment.

Nice to Have

Experience shipping artificial intelligence-heavy consumer products.
Background as an engineer or highly technical product manager.
Experience defining evaluation metrics for machine learning systems.
Strong intuition for artificial intelligence user experience patterns and failure handling.
Prior experience in zero-to-one product environments.

Skills and Tools

Large language models
Machine learning production systems
Model evaluation and experimentation frameworks
System design
Prompting

About the Company

bjakcareer operates as a small, high-talent-density, and hands-on team where engineers and product leaders maintain broad ownership. The organization values independent execution, rapid decision-making, and strong judgment while balancing speed with engineering fundamentals.

How to Apply

Interested candidates should apply directly on the official company careers page.

Skills and tech stack

Questions candidates ask

Where is the job located?

The position is located in Seoul, Korea.

What type of role is this?

This is a full-time Product Engineer position focused on an AI email application.

What kind of experience is needed for this role?

The role requires significant experience owning complex, technical products end-to-end, hands-on experience with LLM-based systems, and solid understanding of modern machine learning in production.

What does the interview process look like?

The interview process consists of three to no more than four interviews conducted via virtual meetings and/or onsite evaluations.

How should an interested candidate apply?

Candidates should apply on the official company careers page.

Ready to apply?

The application is on the official bjakcareer careers page.

Apply on company site