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Backend Engineer, AI (Agent Systems)

bjakcareerChinaActAI Engineering
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Salary
Not listed
Job type
Full-time
Work mode
Remote
Experience
Mid
Posted
28 Sept 2026
Status
Open · checked 8d ago

About this role

The Backend Engineer, AI (Agent Systems) position at bjakcareer is located in China and suits backend software professionals focused on AI inference, orchestration layers, and production scalability. The role involves designing and operating systems that bridge machine learning models and end-user applications.

Role Overview

The Backend Engineer, AI (Agent Systems) takes ownership of the inference and orchestration layer driving artificial intelligence interactions within the product. Based in China, the professional in this role develops production systems that convert model capabilities into stable, low-latency, and observable APIs for mobile and desktop clients.

Key Responsibilities

Build and operate backend systems that deliver AI-driven features in a live production environment
Design service boundaries, orchestration layers, and inference pipelines surrounding models
Manage production responsibilities including monitoring, logging, alerting, and incident response
Tune throughput and latency across streaming, caching, batching, and inference operations

Requirements

Solid backend engineering fundamentals within production environments
Background in operating low-latency and high-throughput services
Knowledge of AI inference patterns involving LLMs, embeddings, and multimodal models
Ability to debug distributed systems under heavy load
Preference for shipping code quickly and learning from production feedback

Skills and Tools

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

About the Company

ACTAI develops proactive applications designed to bring intelligence to daily conversations, errands, organization, and workflows with minimal prompting. The organization focuses on long-running workflows with high reliability, persistent context, and real-world task completion to reduce hallucinations. Operating as a small, hands-on team with high talent density, the group makes collective decisions and moves rapidly to build products for users globally.

How to Apply

Candidates should apply directly on the official company careers page.

Skills and tech stack

Questions candidates ask

What is the location of the Backend Engineer, AI (Agent Systems) role?

The position is located in China.

What does the backend engineer own in this role?

The engineer owns the inference and orchestration layer that powers every AI interaction in the product.

What technologies and tools are part of the tech stack?

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

How many interview rounds can candidates expect?

Candidates can expect 3, but no more than 4 interviews.

What is the primary mission of the company?

The company aims to build proactive applications for anyone worldwide, bringing intelligence to conversations, organization, errands, and workflows with minimal to no prompting.

Ready to apply?

The application is on the official bjakcareer careers page.

Apply on company site