GenAI Senior Data Scientist

Code.Hub is a leading Tech Recruitment, Learning & Development, Extended Team and Project Delivery partner in Greece. Since 2017, Code.Hub has been helping organizations build and scale high-performing technology teams, while supporting Software Engineers in developing their skills and growing their careers.With expertise across modern technologies and digital transformation projects, Code.Hub collaborates with leading organizations in FinTech, Banking, Insurance, Gaming, Telecommunications and Consulting, providing services and solutions in technology, consulting, software delivery and operations.Code.Hub has built one of the strongest tech ecosystems in Greece, managing large-scale technology projects and supporting companies through specialized recruitment and upskilling solutions. In 2026, Code.Hub was certified as a Great Place to Work®, while also receiving HR Awards distinctions for Talent Management, Recruitment Strategy, Mentoring and Learning & Development initiatives, highlighting the company’s strong investment in people growth, innovation and employee experience.You will be joining a fast-growing GameTech project, among the largest and most innovative in the world, active in 19 international markets and counting. Our partner offers a wide range of digital entertainment services to millions of users and is known for continuously investing in cutting-edge technologies. The team is diverse, multinational, and driven by a strong vision for inclusive growth, with operations across three continents and a workforce of over 2,700 professionals.Key ResponsibilitiesTranslate product requirements into AI problems and identify areas where AI can drive business impact.Analyze data to uncover significant patterns and generate actionable insights.Architect and develop agentic and GenAI systems.Select appropriate models for different tasks and optimize their performance.Perform exploratory data analysis (EDA) and feature engineering to support the modeling process.Apply best practices in model selection, parameter tuning, and optimization.Run comparative experiments for model training.Analyze Machine Learning metrics to evaluate and compare potential solutions.Manage the full lifecycle of AI features, from data collection and model design to implementation and optimization in production.Scale and optimize AI applications to support production environments.Mentor and guide junior team members, sharing knowledge and supporting the delivery of complex projects.Required QualificationsHands-on experience with GenAI and Agentic applications.Extensive hands-on experience delivering AI-driven products to production.Experience scaling and optimizing AI applications.Strong knowledge of Machine Learning algorithms and related theory.Good knowledge of the Python Machine Learning ecosystem.Solid Software Engineering background with Object-OrientedProgramming (OOP) experience.Strong teamwork, communication, and analytical skills.Fluency in English, both written and spoken.Nice-to-Have SkillsExperience with Big Data tools such as Spark / PySpark.Experience with cloud environments, ideally Azure / Databricks.Previous experience with LLM fine-tuning.Previous experience with LLM serving.Knowledge of Deep Learning.Let’s Talk About UsHybrid working model.Signing Bonus.Brand new equipment.Exciting & friendly work environment.Career & competencies’ development.Continuous learning & development experience based on infinity model through Code.Hub’s Code.Learn.L&D plan for your career improvement.A truly open, inclusive, and competitive-free environment to grow your skills and have fun!Internal competitions & rewards.Let’s Talk About Code.Hub-ersYou are eligible to free LinkedIn trainings.You are eligible to have free pass to all training Code.Learn activities after 6 months from your induction.Training & Tech Mentor for your induction.Unlimited access to LinkedIn Learning platform (1st semester).Sponsoring of a Bachelor and/or Master’s Degree from Athens Tech College.Private Health Insurance.Performance planning each six months and each two years planning of promotion.Cocktail Fridays @ our offices.Referral Bonus.