Prompt Engineer

Main mission

Designs and refines prompts for precise and reproducible outputs.

5 key responsibilities

• Design system prompts and instructions for AI applications.
• Test, measure, and iterate on output quality (structured evaluations).
• Build reusable and documented prompt libraries.
• Optimize the quality/cost/latency ratio of model calls.
• Train internal teams on best prompting practices.

Key skills

Reasoning optimization, context management, response behavior, evaluation, deep knowledge of LLMs.

What's expected

Consistent and actionable outputs in production. Evaluation rigor matters more than cleverness.

Career paths

AI Product Manager, AI Agents Architect, LLM Evaluation Specialist. The profession is rapidly evolving towards system design.