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Decentriq

Senior Data Pipeline Engineer – Freelance

Decentriq

Senior Data Pipeline Engineer at Decentriq, a leader in data-clean-room technology. Responsible for building and operating Spark-based data pipelines while improving ML models for AdTech.

Posted 5/8/2026contractZürich • 🇨🇭 SwitzerlandSeniorWebsite

Tech Stack

Tools & technologies
AirflowPySparkPythonRustScalaSpark

About the role

Key responsibilities & impact
  • Own, Design, Build & Operate Data Pipelines – Take responsibility for our Spark-based pipeline, from development through production and monitoring.
  • Advance our ML Models – Improve and productionise models for AdTech use-cases such as lookalike modelling and demographics modeling.
  • AI-Powered Productivity – Leverage LLM-based code assistants, design generators, and test-automation tools to move faster and raise the quality bar.
  • Share your workflows with the team
  • Drive Continuous Improvement – Profile, benchmark, and tune Spark workloads, introduce best practices in orchestration & observability, and keep our tech stack future-proof.

Requirements

What you’ll need
  • Bachelor/Master/PhD in Computer Science, Data Engineering, or a related field
  • 5+ years of professional experience.
  • Expert-level Python and PySpark/Scala Spark experience
  • Proven track record building resilient, production-grade data pipelines with rigorous data-quality and validation checks.
  • Data-platform skills: operating Spark clusters, job schedulers, or orchestration frameworks (Airflow, Dagster, custom schedulers).
  • (Plus) Working knowledge of ML lifecycle and model serving; familiarity with techniques for audience segmentation or look-a-like modelling is a big plus.
  • (Plus) Rust proficiency (we use it for backend services and compute-heavy client-side modules).

Benefits

Comp & perks
  • Competitive rates
  • Ownership instead of simply an executor
  • An amazing and fun team that is distributed all over Europe.
  • No need for a formal motivational letter.

ATS Keywords

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Hard Skills & Tools
PythonPySparkScalaData PipelinesMachine LearningData QualityData ValidationSpark ClustersJob SchedulersRust
Soft Skills
Continuous ImprovementCollaborationCommunication
Certifications
Bachelor's DegreeMaster's DegreePhD in Computer SciencePhD in Data Engineering