Applied AI Engineer

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

Location: Zurich

Responsibilities

• Build and ship AI features end-to-end (model → system → user experience)
• Design and iterate on prompts, tools, memory, and agent workflows
• Turn raw model outputs into structured, reliable, and predictable behaviors
• Debug issues across the full stack (model, orchestration, infra, UX)
• Optimize for latency, cost, and production reliability
• Develop lightweight evaluation frameworks to measure real-world performance
• Work closely with product and engineering to translate ambiguous problems into working systems

Requirements

• Strong foundation in machine learning and modern neural network architectures.
• Hands-on experience with training, fine-tuning, or deploying ML models
• Ability to write clean, production-quality code
• Comfort working across abstraction layers (model → infra → product)
• Strong problem-solving skills in ambiguous, fast-moving environments
• Bias toward shipping, iteration, and continuous improvement