Senior Data Engineer (Snowflake, AWS) w Łódź, Polska

We are looking for a Senior Data Engineer to support the design, development, and enhancement of our client’s enterprise data platform. The ideal candidate is a hands-on data engineer with strong experience building data pipelines, integrating data from operational databases, and working with modern cloud data warehouses. Responsibilities Build and maintain Python-based ETL/ELT workflows for data ingestion, transformation, and validation Design and develop data pipelines to ingest data from operational databases (PostgreSQL, Microsoft SQL Server, and other OLTP systems) into Snowflake Develop scalable and performant data models in Snowflake. Implement and maintain Medallion Architecture (Bronze, Silver, Gold) data models to support analytics and downstream applications. Collaborate with application developers, business users, and data consumers to understand data requirements Requirements 3+ years of hands-on data engineering experience. Strong Python programming skills with experience building ETL/ELT pipelines. Solid SQL skills, including query optimization and data modeling. Strong experience with Snowflake. Experience integrating data from OLTP databases, including PostgreSQL and Microsoft SQL Server Experience implementing Medallion Architecture (Bronze, Silver, Gold) or similar layered data lake/lakehouse models. Excellent communication and collaboration skills Nice to have Experience with orchestration tools such as Airflow, Dagster, or Prefect. Experience with cloud platforms (AWS preferred). Familiarity with dbt or similar transformation frameworks Experience with CI/CD for data engineering workflows We offer We gather like-minded people:Top tech minds driving innovation in AI, cloud and digital platform modernizationSupportive team and agile, startup-like cultureHybrid by design mode and opportunity to work remotely within PolandChance to work abroad for up to 60 days annuallyBusiness-driven relocation opportunitiesWe provide growth opportunities:Career development programsThought leadership, mentoring, soft skills and well-being programsCertification (Anthropic, Gemini, GCP, Azure, AWS)English classesWe cover it all:Stable payParticipation in the Employee Stock Purchase Plan with a 15% discountBenefits package (health insurance, multisport, shopping vouchers)Referral bonuses up to $2,000Offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee and moreCorporate, social and well-being eventsPlease, note:Benefits listed above are available to employees onlyWe are open for working with Contractors. Terms of B2B cooperation agreements are agreed individuallyWe will reach out to selected candidates exclusively EPAM is global leader in AI transformation engineering and integrated consulting, serving Forbes Global 2000 companies and ambitious startups. With over thirty years of expertise in custom software, product and platform engineering, we empower our clients to become AI-Native enterprises, driving measurable value from innovation and digital investments.