Overview As a Prompt Engineer in our AI Innovation Lab, you design, test, and scale prompts for large language models to improve decision-making, knowledge access, and collaboration. You will work with a multidisciplinary team to apply generative AI to human development, sustainability, and social well-being. You'll build a reusable prompt framework, refine outputs for quality and ethics, and contribute to responsible AI practices.

This role offers impactful, mission-driven work with cutting-edge tools and cross-functional collaboration. Compensaciones / Incentivos 100% remote work flexibility within Spain state-of-the-art AI tools and infrastructure training opportunities in generative AI, ethics, and advanced prompt engineering high-impact projects contributing to sustainability, education, healthcare, and transformation culture of collaboration, continuous learning, and purpose-driven innovation Responsabilidades Design, test, and refine prompts to maximize quality, accuracy, and ethical reliability of outputs Build and maintain a prompt engineering framework with reusable templates, libraries, and guidelines Collaborate with product, engineering,



and research teams to integrate AI into tools addressing social and business challenges Apply advanced NLP techniques, embeddings, and fine-tuning to tailor LLMs to use cases Implement metrics to evaluate model performance, bias, and inclusivity Support development of AI systems aligned with organizational values, ethics, and social responsibility Stay ahead of curve in prompt engineering, AI safety, and generative model capabilities Requisitos principales Bachelor in Computer Science, Computational Linguistics, AI, or related discipline Demonstrated experience designing prompts and workflows for LLMs (OpenAI, Anthropic, Google Gemini, Llama, etc.) Solid Python programming with API experience Strong understanding of NLP methods, embeddings, and vector databases (Pinecone, Weaviate, FAISS) Familiarity with cloud platforms (AWS, Azure, GCP) Ability to work cross-functionally and translate human needs into AI-powered solutions Fluent in English (B2+) Cross-functional collaboration Strong communication Problem solving Prompt design for LLMs NLP, embeddings, vector databases Python programming

📌 Prompt engineers (Barcelona)
🏢 Ethikos
📍 Barcelona