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Member of Technical Staff, Machine Learning

bjakcareerSeoul, KoreaActAI Engineering
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Salary
Not listed
Job type
Full-time
Work mode
Remote
Posted
28 Sept 2026
Status
Open · checked 9d ago

About this role

This role suits engineers who want to develop strong systems judgment by shipping, debugging, and iterating on real-world machine learning. The Member of Technical Staff, Machine Learning position is located in Seoul, Korea, and involves building core machine learning components for production systems.

Role Overview

ACTAI seeks a Member of Technical Staff, Machine Learning in Seoul, Korea to build core machine learning components. Personnel will operate on real production systems starting day one to understand how large-scale machine learning behaves outside of research settings. The position involves working alongside senior machine learning engineers and product teams under production constraints involving latency, cost, reliability, and safety.

Key Responsibilities

Construct and enhance machine learning components across data, training, evaluation, and inference.
Fine-tune and adapt models within larger production architectures.
Set up evaluation and testing procedures to analyze model behavior.
Construct and support data pipelines handling real-world and synthetic data.
Troubleshoot model errors, performance bottlenecks, and production incidents.
Release updates iteratively and incorporate real user feedback.
Collaborate closely with senior machine learning engineers and product groups.

Requirements

Possess solid foundations in machine learning and modern neural architectures.
Bring practical background in training, fine-tuning, or deploying machine learning models.
Write production-quality code and adapt to new tools rapidly.
Demonstrate curiosity, coachability, and readiness to learn from production systems.
Navigate ambiguity using guidance and expand ownership responsibilities over time.
Maintain a strong bias toward shipping, iteration, and continuous enhancement.

Skills and Tools

Python
PyTorch
JAX
Production machine learning systems running on GPUs

About the Company

ACTAI focuses on developing proactive applications designed for users worldwide who are unfamiliar with complex prompting. The organization aims to integrate intelligence into conversations, errands, organizing, and workflows with minimal or no prompting. Products center on achieving high reliability for long-running workflows, persistent context, and real-world task completion to reduce hallucinations.

How to Apply

Interested candidates should apply 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 technical stack is used in this role?

The tech stack includes Python, PyTorch or JAX, and production machine learning systems operating on GPUs.

What will the day-to-day work involve?

The work involves building and improving machine learning components, fine-tuning models, building data pipelines, debugging performance issues, and shipping improvements within production constraints.

How many interview rounds are there?

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

Ready to apply?

The application is on the official bjakcareer careers page.

Apply on company site