Senior Data Scientist Strong Llm J287

## About the role We're looking for a Senior Data Scientist with strong hands-on experience in fine-tuning Large Language Models (LLMs) on proprietary data. You'll work at the intersection of research and production, delivering high-performance, business-ready AI solutions. ## Responsibilities - Prepare and curate proprietary datasets for LLM fine-tuning - Fine-tune models using LoRA, QLoRA, GRPO, and related techniques - Benchmark, evaluate, and iterate on model performance - Deploy fine-tuned models into production inference pipelines - Stay current with cutting-edge LLM research and apply relevant advances - Collaborate with product, engineering, and business stakeholders ## Requirements - Proven experience fine-tuning LLMs on private/proprietary data - Strong background in ML, NLP, and deep learning - Hands-on with PyTorch or TensorFlow and Python - Experience with Hugging Face Transformers - Solid data skills (Pandas, NumPy) and Git-based workflows - Strong communication skills and collaborative mindset ## Nice to have - Experience with RAG / GraphRAG, reasoning or agentic models - Research background or publications in AI/ML/NLP - MLOps exposure and model deployment experience - MS or PhD in a relevant field ## What we offer - Attractive salary - Large freedom and real influence - No unhealthy competition, team approach to meeting challenges - Remote-first, flexible working culture - Company apartments in cool cities across Europe: work and enjoy a memorable getaway ## About the company We are a software house with 18 years of experience and a global portfolio of projects. We help businesses modernize, scale, and innovate through custom software solutions — always with a focus on flexibility and quality. Our team embraces unconventional ideas and new technologies, delivering solutions that drive real impact. If you value professionalism, creativity, and a strong engineering culture, you'll feel at home here.