Senior Big Data Developer (f/m/x)

Sii Polska; Katowice; Hybrid; PLN 180,000 - 270,000; Full time

Job summary

Sii Polska is seeking 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. Requirements include 3+ years in Big Data, Spark PySpark, SQL, data modeling, and advanced English.

Qualifications

• At least 3 years of programming experience in Big Data.
• 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 APIs.
• Basic knowledge of semantic models and Power BI.
• Advanced English language skills.

Responsibilities

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

Skills

Big Data programming

Spark PySpark

SQL

Data modeling

Data quality

Data pipeline development

Performance optimization

Source systems knowledge

Semantic models

Power BI

English (Advanced)

Tools

Power BI

Job description

This translation is generic and may include errors. Show original text

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.

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

Requirements

• At least 3 years of programming experience in Big Data
• 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 APIs
• Basic knowledge of semantic models and Power BI
• Advanced English language skills

Remote Hybrid Office

Job no. JOB-GR7FV

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.