Senior AI Engineer at Bluefish AI

Senior AI Engineer Company: Bluefish AI Location: Berlin, Germany (hybrid/remote within Germany) Employment Type: Full-time Published: November 28, 2025 About Bluefish AI: Bluefish AI is building the leading AI marketing platform for Fortune 500 brands, recently securing $20M Series A funding led by NEA with participation from Salesforce Ventures. The founding team consists of martech industry veterans who previously helped build foundational ad-tech platforms now owned by Meta and Microsoft. They are disrupting the $300BN legacy martech industry by helping brands engage consumers on a new AI-driven channel with tools for AI brand safety and personalized AI marketing experiences. Teams distributed globally — New York for business, Berlin for engineering. Key Responsibilities: - Lead the development, training, and fine-tuning of large language models for NLP tasks - Design scalable production architectures for LLM solutions - Enhance model performance regarding data quality, bias mitigation, and model interpretability - Stay current with NLP/AI research advancements and prototype innovations - Mentor junior team members and foster cross-functional collaboration Required Qualifications: - Prior senior-level experience deploying LLMs in production environments - Strong ML and NLP theoretical and practical knowledge - Python proficiency and ML frameworks expertise - Data preprocessing, feature engineering, and model evaluation skills - Proven track record driving AI/NLP innovation - Leadership experience and excellent communication abilities for technical/non-technical audiences