Senior AI Engineer (Tech Start-up, Copenhagen)

Job summary

This position involves working as a senior member of an AI team in a fast-growing tech start-up focused on AI and machine learning solutions. The role emphasizes ownership and autonomy in developing innovative products that address real market challenges.

Responsibilities

• Lead the full machine learning lifecycle, including data annotation, model training, evaluation, and deployment.
• Refine prompts and tune hyper-parameters for optimal performance of retrieval and generative AI systems.
• Collaborate closely with researchers, engineers, and product teams to influence product development and direction.

Qualifications

• Over 5 years of experience in building machine learning systems, particularly in natural language processing (NLP).
• Proficiency in Python with a commitment to writing clean, production-ready code.
• Practical experience with large language models (LLMs), prompt engineering, and AI agents.
• Understanding of LLM evaluation techniques, handling hallucinations, context management, and conversational AI.
• A curious mindset with a focus on hypothesis formation, experimentation, and learning from results.
• Strong proficiency in written and spoken English.