Ref: #73662

Senior Data Engineer

  • Practice Data

  • Technologies Business Intelligence Jobs and Data Recruitment

  • Location Warszawa, - None Specified -

  • Type Contract

Senior Data Engineer (Architect + Hands-on Developer)
The opportunity
We are seeking a Senior Data Engineer (5+ years’ experience) who can operate at the intersection of solution architecture and hands-on development. This role requires an individual who can design scalable data architectures while actively building and maintaining production-grade data pipelines.
The core purpose is to architect, build, and optimize robust data platforms and pipelines that enable advanced analytics, business intelligence, and data-driven decision-making across the organization.
 
Your key responsibilities

  • Architect and Design scalable, reliable, and cost-effective data platforms and pipelines aligned with business needs
  • Develop and implement high-quality data pipelines to process large-scale structured and unstructured data
  • Own end-to-end data lifecycle, including ingestion, transformation, storage, and consumption layers
  • Establish data architecture standards, best practices, and reusable frameworks
  • Optimize performance and cost of data systems across cloud platforms
  • Ensure data quality, governance, security, and compliance across all data assets
  • Provide technical leadership and guidance to junior engineers and collaborate with cross-functional teams
  • Partner with stakeholders to translate business requirements into scalable technical solutions
  • Troubleshoot production issues and ensure high availability and reliability of data systems

Skills and attributes for success

  • Strong Engineering & Architectural Mindset: Ability to design scalable data solutions while staying hands-on with implementation
  • Technical Depth in Python: Expertise in writing clean, modular, and production-ready code
  • Modern Data Stack Expertise: Experience with platforms like Databricks, Spark, and distributed data processing systems
  • Data Architecture Knowledge: Strong understanding of data lakes, lakehouses, and warehouse architectures and when to use each
  • Cloud Expertise: Hands-on experience designing data solutions on AWS, Azure, or GCP
  • Problem-Solving & Leadership: Ability to break down complex problems, guide teams, and drive technical decisions
  • Collaboration Skills: Strong communication skills to work across technical and business stakeholders

To qualify for the role, you must have

  • 5+ years of experience in Data Engineering with a mix of design/architecture and hands-on development
  • Expert-level Python skills in building scalable data pipelines in production environments
  • Strong experience with PySpark and distributed data processing frameworks
  • Workflow orchestration expertise (Apache Airflow, Prefect, or similar)
  • Advanced SQL skills with experience across relational and NoSQL databases
  • Cloud platform experience (AWS, Azure, or GCP) with data services
  • Experience in designing data architectures (data lakes, lakehouse, medallion architecture, etc.)
  • Strong understanding of CI/CD, version control (Git), and DevOps practices for data pipelines

Ideally, you’ll also have

  • Experience designing end-to-end enterprise data platforms
  • Advanced Databricks capabilities including Delta Lake, MLflow, and performance tuning
  • Exposure to data governance frameworks and data quality tools
  • Knowledge of data modelling techniques (dimensional and normalized models)
  • Familiarity with data science and machine learning pipelines
  • Contributions to open-source projects or internal accelerators/frameworks
  • Bachelor’s or master’s degree in computer science, Engineering, or related field

 
What we look for
We are looking for someone who:

  • Can balance architecture thinking with hands-on execution
  • Has a proven track record of building and scaling production data systems
  • Takes ownership of technical decisions and system design
  • Can mentor and uplift team members
  • Communicates effectively with both technical and non-technical stakeholders
  • Is proactive in adopting modern data technologies and best practices

 

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