As part of our ongoing digital transformation journey, we are developing ACE, a cutting‑edge Generative AI‑powered platform designed to enhance the efficiency and accuracy of our Bid & Proposal Management process within the Transformers Business Unit. We are seeking a Prompt Engineer who will play a pivotal role in this initiative. This individual will be responsible for designing, testing, and optimizing domain‑specific prompts that enable ACE to generate accurate, context‑aware, and business‑aligned outputs. The role requires a deep understanding of the transformer industry, industrial equipment standards, as well as basic understanding of prompt engineering best practices and GenAI model behavior, ensuring that ACE delivers high‑quality responses tailored to complex business scenarios. The idóneo candidate will collaborate closely with IT Experts, Subject Matter Experts, Business stakeholders, and Module Owners to break down complex business logic into domain‑specific prompts.
Develop, refine, and maintain prompt libraries for various transformer units/factories.




Implement advanced techniques like prompt chaining, context injection, and few‑shot learning for enterprise‑grade accuracy.
Own prompt lifecycle management including versioning, traceability, and governance.
Conduct A/B testing and maintain performance dashboards for prompt effectiveness.
Work closely with Module Owners, Subject Matter Experts, and Business Stakeholders to embed prompts into ACE workflows.
Create clear documentation for prompt strategies and maintain best practices aligned with Hitachi Energy’s AI Ethics Charter.
Implement and recommend best practices for prompting across different ACE modules.
Bachelor or master degree in electrical engineering
Strong linguistic and logical reasoning for crafting precise prompts.
Ability to understand business processes and translate them into ACE‑specific prompts.
Hands‑on experience with LLMs and prompt engineering techniques.
Willingness to learn Pyth

📌 Global AI Prompting Engineer PGTR (Madrid)
🏢 Hitachi Energy
📍 Madrid