Senior Big Data Developer (f/m/x)

About the Position

Senior Big Data Developer (f/m/x)

We are looking for an experienced Big Data Developer to join a team focused on creating and maintaining modern analytical solutions. You will be responsible for building and optimizing data pipelines and lakehouse models in a remote work environment. If you are passionate about data and want to work on innovative projects, this offer is for you.

Responsibilities

• Building and maintaining data pipelines and lakehouse models
• Integrating data from various sources
• Implementing data quality controls and monitoring
• Conducting unit and integration testing
• Operating and monitoring data pipelines
• Analyzing and resolving load and performance issues
• Optimizing resource consumption
• Supporting feasibility assessment and effort estimation for requirements

Requirements

• Minimum 3 years of experience in Big Data programming
• Strong knowledge of Data Factory, Spark (PySpark), and SQL
• Experience in data modeling, including medallion architecture and dimensional modeling
• Familiarity with OneLake and Delta Lake concepts
• Ability to work with DataOps, including Git, deployment pipelines, and automated testing
• Knowledge of data quality and monitoring frameworks
• Experience in performance and capacity optimization
• Understanding of source systems and API interfaces
• Basic knowledge of semantic models and Power BI
• Advanced English language skills

Locations

• Remote, Poland
• Hybrid, Poland
• Office, Poland

Benefits

• Great Place to Work
• Solid financial situation
• Contracts with the biggest brands
• Centre of internal trainings
• Many experts you can learn from
• Open and accessible management team
• Profit sharing
• Passion Sponsorship program
• Regular integration events and trips
• Comfortable and well-equipped offices
• MySii app
• Medical care

About the Company

Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.