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Applied AI Engineer

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

About this role

Based in Seoul, Korea, the Applied AI Engineer position at bjakcareer involves translating advanced model capabilities into reliable product features for daily applications. This role is well-suited for professionals experienced in machine learning, systems engineering, and product development who want to build proactive applications with minimal prompting.

Role Overview

This position sits at the intersection of machine learning, infrastructure, and user experience. The professional in this role takes ownership of problems from inception to production, shaping model behaviors and constructing surrounding systems to ensure dependability in real-world usage.

Key Responsibilities

Construct and deliver end-to-end artificial intelligence features spanning models, infrastructure, and user experiences.
Design and refine prompts, tools, memory structures, and agent workflows.
Convert raw model outputs into structured, predictable, and dependable behaviors.
Troubleshoot issues across the entire stack, including models, orchestration, infrastructure, and user interfaces.
Enhance production reliability while optimizing for processing speed and operational costs.
Construct lightweight evaluation frameworks to measure practical performance.
Collaborate with product and engineering teams to transform ambiguous challenges into operational systems.

Requirements

Solid foundation in machine learning and contemporary neural network architectures.
Practical experience training, fine-tuning, or deploying machine learning models.
Capability to write clean and production-ready code.
Comfort operating across multiple abstraction layers from models to infrastructure and products.
Problem-solving abilities suited for ambiguous and fast-paced settings.
Focus on shipping code, iterating quickly, and achieving continuous improvement.

Skills and Tools

Python
PyTorch
JAX
Large Language Models including OpenAI-style APIs, LLaMA, and Qwen
Inference and serving tools such as vLLM
Vector Databases

About the Company

ACTAI focuses on building proactive applications for users globally to handle conversations, errands, organization, and workflows with minimal prompting. The organization aims to deliver high reliability for long-running workflows, maintain persistent context, and achieve real-world task completion while reducing hallucinations. The team operates collectively and rapidly to build practical artificial intelligence products.

How to Apply

Interested candidates should visit the official bjakcareer company careers page to submit their application.

Skills and tech stack

PythonPyTorchJAXLLMsOpenAI-style APIsLLaMAQwenvLLMVector DBMachine LearningFine-tuning

Questions candidates ask

Where is the job located?

The position is located in Seoul, Korea.

What technologies and tools are used in this role?

The tech stack includes Python, PyTorch, JAX, Large Language Models such as OpenAI-style APIs, LLaMA, and Qwen, inference and serving tools like vLLM, and vector databases.

What are the core focuses of the Applied AI Engineer?

The focus includes building end-to-end AI features, designing prompts and agent workflows, turning model outputs into structured behaviors, debugging full-stack issues, optimizing for latency and cost, and developing evaluation frameworks.

What does the interview process look like?

The interview process consists of three to four interviews maximum, conducted via virtual meetings and/or onsite.

Ready to apply?

The application is on the official bjakcareer careers page.

Apply on company site