Backend Engineer, AI Systems

zürich, zürich, Switzerland • Posted June 13, 2026

Job Type: Full-time
Location: zürich, zürich
Posted: June 13, 2026
Category: Other-General
Application Deadline: July 23, 2026

Role Description

Overview

A1 is building a proactive AI smart assistant for everyday users to bring intelligence to conversations, errands, organising and workflows. Our product focuses on achieving high reliability for long-running workflows, persistent context, and real-world task completion. The system must handle multi-step reasoning, interact with external tools, and remain reliable despite non-deterministic model behavior.

Role

As a Backend Engineer, AI, you own the inference and orchestration layer that powers every AI interaction in the product. Your work sits between models and users, where latency, correctness, reliability, and cost directly impact real-world experience. Build and operate production systems that turn model capability into fast, stable, observable APIs used across mobile and desktop clients.

Focus

  • Build and operate backend systems that serve AI-powered features in production.
  • Design inference pipelines and orchestrat...

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