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Backend Engineer, AI (Agent Systems)

bjakcareerUnited KingdomActAI Engineering
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Salary
Not listed
Job type
Full-time
Work mode
Remote
Posted
28 Sept 2026
Status
Open · checked 7d ago

About this role

The Backend Engineer, AI (Agent Systems) position is located in the United Kingdom with bjakcareer, suiting developers with strong backend foundations who want to build production systems for proactive AI applications. The role focuses on managing the inference and orchestration layer that connects models and users.

Role Overview

This position involves building and operating production infrastructure that transforms model capabilities into stable, fast, and observable application programming interfaces for desktop and mobile clients. The professional in this role handles inference pipelines, service boundaries, and orchestration layers while focusing on low latency, high throughput, and cost efficiency.

Key Responsibilities

Build and operate backend infrastructure serving features powered by artificial intelligence in live environments.
Design orchestration layers, inference pipelines, and service boundaries around machine learning models.
Manage operational concerns including logging, monitoring, alerting, and incident response.
Optimize throughput and latency across streaming, caching, batching, and inference.

Requirements

Possess strong backend engineering fundamentals within production settings.
Bring experience operating low-latency and high-throughput services.
Demonstrate familiarity with machine learning inference patterns such as embeddings, large language models, and multimodal systems.
Show comfort in debugging distributed systems under heavy load.
Maintain a bias toward rapid shipping and learning from operational behavior.

Skills and Tools

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

About the Company

Operating under the name bjakcareer, the organization builds proactive applications for users worldwide to bring intelligence to everyday workflows, conversations, tasks, and notes without requiring complex prompting. The team focuses on persistent context, real-world task completion, and high reliability for long-running workflows to reduce hallucinations.

How to Apply

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

Skills and tech stack

Questions candidates ask

What is the primary focus of the Backend Engineer role?

The role owns the inference and orchestration layer sitting between users and models, requiring the creation of fast, stable, and observable APIs for mobile and desktop clients.

What technologies are used in the tech stack?

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

Where is the position located?

The job is located in the United Kingdom.

What does the interview process look like?

The evaluation consists of three to four interviews conducted via virtual meetings or onsite, handled by technical team members.

What is the mission of the company?

The company aims to build proactive applications that bring intelligence to everyday tasks, notes, email, calendars, and conversations with minimal to no prompting.

Ready to apply?

The application is on the official bjakcareer careers page.

Apply on company site