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Backend Engineer, AI (Agent Systems)

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

The Backend Engineer, AI (Agent Systems) position at bjakcareer in Seoul, Korea suits developers with strong backend fundamentals who want to build production systems for AI applications. This role focuses on the inference and orchestration layer connecting users and models to deliver reliable real-world task completion.

Role Overview

This position involves owning the backend architecture that powers artificial intelligence interactions within the product. The professional in this role will build production systems that transform model capabilities into stable APIs for mobile and desktop platforms.

Key Responsibilities

Construct and manage backend infrastructure supporting AI features in production environments
Architect inference pipelines, orchestration layers, and service boundaries surrounding models
Handle production monitoring, logging, alerting, and incident response duties
Improve latency and throughput performance through inference, caching, batching, and streaming techniques

Requirements

Solid foundation in backend engineering within production environments
Background operating services that demand high throughput and low latency
Understanding of artificial intelligence inference patterns involving large language models, embeddings, and multimodal systems
Ability to troubleshoot distributed systems under heavy load
Focus on deploying code and learning from real production data

Skills and Tools

Python
Node.js
PyTorch
OpenAI, Anthropic, and open-source large language models
SQL and NoSQL databases
Kubernetes
Docker

About the Company

Actai builds proactive applications designed to organize daily life for users globally without requiring complex prompting. The organization focuses on high reliability for long-running workflows, persistent context, and real-world task completion to reduce hallucinations.

How to Apply

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

Skills and tech stack

Questions candidates ask

What is the location of the Backend Engineer, AI role?

The position is located in Seoul, Korea.

What technologies and tools are used in this role?

The tech stack includes Python, Node.js, PyTorch, OpenAI, Anthropic, open-source LLMs, SQL, NoSQL, Kubernetes, and Docker.

What are the primary responsibilities for this position?

Responsibilities include building backend systems for AI features, designing inference pipelines and orchestration layers, handling production monitoring and incident response, and optimizing latency and throughput.

What does the interview process involve?

The process consists of three to four interviews conducted through virtual meetings or onsite sessions, evaluated by technical team members.

Ready to apply?

The application is on the official bjakcareer careers page.

Apply on company site