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.What You'll DoPrepare and curate proprietary datasets for LLM fine-tuningFine-tune models using LoRA, QLoRA, GRPO, and related techniquesBenchmark, evaluate, and iterate on model performanceDeploy fine-tuned models into production inference pipelinesStay current with cutting-edge LLM research and apply relevant advancesCollaborate with product, engineering, and business stakeholdersWhat We're Looking ForProven experience fine-tuning LLMs on private/proprietary dataStrong background in ML, NLP, and deep learningHands-on with PyTorch or TensorFlow and PythonExperience with Hugging Face TransformersSolid data skills (Pandas, NumPy) and Git-based workflowsStrong communication skills and collaborative mindsetNice to HaveExperience with RAG / GraphRAG, reasoning or agentic modelsResearch background or publications in AI/ML/NLPMLOps exposure and model deployment experienceMS or PhD in a relevant fieldWhat do we offer you?Attractive salaryLarge freedom and real influenceNo unhealthy competition, team approach to meeting challengesRemote-first, flexible working cultureCompany apartments in cool cities across Europe: work and enjoy a memorable getawayAbout UsWe 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.Job Type: Full-timePay: €54,000.00-€120,000.00 per yearExperience:Data Scientist: 5 years (required)Work Location: Remote