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Backend Engineer, AI (Agent Systems)

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

About this role

This role suits a backend engineer based in Zurich, Switzerland who wants to build production systems for AI-powered applications. The position involves owning the inference and orchestration layer that powers every AI interaction within the product.

Role Overview

ACTAI is hiring a Backend Engineer, AI (Agent Systems) in Zurich, Switzerland to construct proactive applications designed to bring intelligence to workflows, conversations, and everyday tasks with minimal prompting. The selected candidate will manage the critical infrastructure sitting between AI models and users, focusing on latency, cost, correctness, and reliability.

Key Responsibilities

Construct and operate backend systems delivering AI-powered features in production.
Design orchestration layers, inference pipelines, and service boundaries around models.
Oversee production monitoring, logging, alerting, and incident response.
Enhance throughput and minimize latency across streaming, batching, caching, and inference.

Requirements

Possess robust backend engineering fundamentals within production environments.
Demonstrate experience operating low-latency and high-throughput services.
Show familiarity with AI inference patterns including embeddings, multimodal models, and LLMs.
Maintain comfort debugging distributed systems operating under load.
Exhibit a strong bias toward shipping products and learning from real production behavior.

Skills and Tools

Python
NodeJs
Pytorch
OpenAI, Anthropic, and open-source LLMs
SQL and NoSQL
Kubernetes
Docker

About the Company

ACTAI builds proactive applications aimed at users who do not rely on complex prompting, with a mission to deliver intelligence for conversations, errands, and organizing workflows. The organization focuses on achieving persistent context, real-world task completion, and high reliability for long-running workflows while reducing hallucinations.

How to Apply

Interested candidates should apply directly on the official company careers page.

Skills and tech stack

Questions candidates ask

Where is the Backend Engineer, AI position located?

The position is located in Zurich, Switzerland.

What technologies and tools are part of the tech stack?

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

What are the primary focus areas for this role?

The focus areas involve building and operating backend systems for AI-powered features, designing inference pipelines and orchestration layers, handling production concerns like logging and incident response, and optimizing latency and throughput.

What does the interview process look like?

The interview process consists of 3 to 4 interviews conducted via virtual meetings or onsite, evaluated by technical team members.

Ready to apply?

The application is on the official bjakcareer careers page.

Apply on company site