The opportunity

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 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 ideal 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.

How you'll make an impact

• 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.
• Evaluate LLM responses for precision, compliance, and bias mitigation.
• 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.
• Stay updated on emerging GenAI technologies, frameworks, and tools to enhance ACE capabilities.
• Implement and recommend best practices for prompting across different ACE modules.

Your background

• Bachelor or master degree in electrical engineering
• Experience working in the transformer industry, with international standards and customer documentation.
• Strong problem-solving and analytical thinking.
• Strong linguistic and logical reasoning for crafting precise prompts.
• Strong understanding of NLP, context management, and token optimization.
• Ability to experiment and iterate to optimize outputs.
• Ability to understand business processes and translate them into ACE-specific prompts.
• Hands-on experience with LLMs and prompt engineering techniques.
• Strong interest in AI enterprise-grade solutions.
• Willingness to learn Python and experience with AI APIs services.
• Ability to work in Agile environments and manage multiple stakeholders.
• Excellent communication and collaboration skills.
• Analytical mindset with attention to detail.
• Empathy for end users and curiosity for experimentation.
• Commitment to ethical AI practices and continuous learning.
• Reduction in prompt failure rate and model hallucination.
• Improvement in accuracy of outputs by modules.
• Speed and scalability of prompt deployment across ACE modules within the Transformer Business Unit.
• Compliance with AI governance and security standards.

More about us

At Hitachi Energy, we recognize that our people are at the heart of our success. We are committed to providing a supportive and inclusive workplace, competitive rewards, and opportunities for professional and personal growth. Our benefits package is designed to help employees thrive both at work and in their personal lives.

Our benefit offering is tailored based on your country of employment and generally includes:​

• Competitive salary and incentives​
• Well-being and care ​
• Paid and unpaid leave​
• Flexible work options ​
• Benefits that support your financial security​

You will receive more specific information during the recruitment process.