Wellhub (formerly Gympass) is seeking a Lead Software Engineer for their GenAI team in Portugal. This role focuses on generative AI, Retrieval-Augmented Generation (RAG), LLMs fine-tuning, and API integrations. The ideal candidate will work on developing generative AI applications, implementing RAG systems, and creating APIs for AI models. Key responsibilities include designing AI-powered solutions, optimizing RAG frameworks, ensuring seamless integration with other systems, and collaborating with cross-functional teams. The role requires strong programming skills, experience with SQL/NoSQL technologies, and API development. Preferred qualifications include a PhD, experience with large language models, and knowledge of cloud platforms. Wellhub offers a comprehensive benefits package, including flexible work arrangements, generous PTO, parental leave, and career growth opportunities. The company is committed to creating a diverse and inclusive work environment.