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Senior Data Engineer

Senior Data Engineer

Cluj-Napoca, Oradea | Senior

We are looking for a Senior Data Engineer to design and build scalable, cloud-native data platforms. You will work with modern data architectures and process large-scale datasets to power analytics and business intelligence. This is a hands-on technical leadership role with strong ownership over architecture, pipelines, and data quality.

Why Qubiz?

For more than 16 years, Qubiz has been a leading tech company with 400+ employees and a flat organisational structure.

By prioritising people, both colleagues and clients, we have created an environment focused on well-being, which allows us to deliver exceptional performance.

Most importantly, our 91–94% retention rate and the many colleagues who have been with us for 5, 10 and even 15 years is a testament to the fact that you can build a long and successful career with us.

Key responsibilities

  • Design and implement end-to-end data pipelines (batch & streaming)
  • Build and maintain data lake / Lakehouse architectures using modern cloud tools
  • Implement Medallion Architecture (Bronze, Silver, Gold layers) for scalable data processing
  • Process and optimize high-volume datasets using Apache Spark (PySpark) or SQL
  • Develop robust data models for analytics and reporting
  • Ensure data quality, governance, lineage, and security
  • Integrate and leverage AI tools (LLMs, embeddings, ML pipelines) where relevant
  • Collaborate with analysts, data scientists, and stakeholders to deliver insights
  • Optimize pipelines for performance, scalability, and cost efficiency
  • Build automated data pipelines and workflows (DataOps mindset, CI/CD)
  • Mentor junior engineers and drive best practices

Required skills & experience

  • 5+ years experience in Data Engineering or similar roles
  • Strong expertise in Python, Apache Spark / PySpark, and SQL & Data Warehousing concepts
  • Proven experience with Data Lakes, large-scale data processing, and Medallion architecture
  • Hands-on experience with Microsoft ecosystem: Microsoft Fabric / Azure Data Services / Synapse / Data Factory
  • Experience with Power BI or similar BI tools
  • Strong understanding of ETL/ELT pipelines, data modeling, and performance optimization
  • Experience with real-time or near real-time data pipelines
  • Experience working with AI/ML-enabled data platforms
  • Familiarity with LLMs (e.g. GPT-based tools), embeddings, or vector databases

Nice to have

  • Experience with Databricks
  • Experience with DBT
  • Experience with streaming tools (Kafka, Event Hubs)
  • Familiarity with automation of data pipelines (DataOps, orchestration tools)
  • Infrastructure as Code (Terraform, ARM)
  • Data governance tools

What's in it for you?

  • Real responsibilities and challenging projects
  • Friendly environment suited for professional and personal development
  • Clear paths and real help in your professional development
  • Training and certifications
  • Fun team-building sessions
  • Private health insurance
  • 50% discount for gym or sports pass of your choice
  • Fresh fruit on your table every day
Apply now

Ready to join us
as our next Senior Data Engineer?

Tell us a little about yourself. We review every application personally and aim to get back to you within a fortnight.

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