Junior Data Scientist

The person in this role will work with project teams developing modern data platforms in cloud environments for global brands. They will work in an international environment, grow their expertise in Data & AI solutions, learn the latest technologies in this area and support the principles of the DataOps manifesto.

Warsaw Hybrid/Onsite

Responsibilities

• Working closely with clients across industries - from analyzing problems and identifying areas for improvement to supporting the design and presentation of advanced analytics and machine learning solutions
• Building, evaluating and deploying machine learning models - from classical statistical approaches to LLM-powered applications
• Designing and implementing GenAI solutions including RAG pipelines, agentic workflows and LLM-based automation
• Contributing to MLOps practices - model versioning, experiment tracking, CI/CD for ML, monitoring and observability in production
• Participating in the full project lifecycle: from business and data analysis, through prototyping and development to production deployment and result validation

Requirements

• Minimum 1 year of experience in Data Science / ML Engineering (internships, commercial projects, or strong open-source/research contributions)
• Strong programming skills in Python
• Solid understanding of fundamental statistical and ML models
• Hands-on experience with at least some of LLMs, prompting techniques, RAG architectures, fine-tuning, evaluation & guardrails, agentic frameworks (e.g. LangGraph)
• Knowledge of ML libraries (e.g., PyTorch, Tensorflow)
• Ability to analyze problems and synthesize solutions
• Basic knowledge of selected ML solution lifecycle management platforms (e.g. MLflow, Azure ML, Amazon SageMaker)
• Knowledge of SQL, comfortable querying and transforming data in relational databases
• Ability to write clear, structured code following good programming practices
• Familiarity with git repositories and tools such as JIRA, Confluence, Teams
• Very good knowledge of English (B2+) enabling work in an international environment

We offer

• Global projects in clouds - we work with clients from all over the world based on modern cloud technologies
• Certification reimbursement - develop your skills and obtain certifications such as Microsoft, Amazon Web Services, Databricks, and ISTQB. We cover the cost of exams
• Time to learn - take advantage of 60 paid hours per year for learning and use the Buddy Program, which supports you during your first months on the job
• Flexible approach - connect studies with your career. Adjust your schedule to your needs thanks to flexible working hours
• Personalized benefits - medical care, subsidized sports packages, language tuition, new employee referral bonus (up to PLN 15,000) as well as annual and media bonus