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SSSigma Software logo

Sigma Software

Warsaw, pl

Senior Data Engineer.

FULL TIMEREMOTESENIOR LEVELDATA & ML
  • Design and build scalable cloud-native data platforms from greenfield to production
  • Design and implement near-real-time ingestion pipelines using event-driven patterns
  • Define and enforce data platform standards including Data Lake/Lakehouse principles, medallion architecture, and data contracts
  • Refactor, optimize, and modernize Spark and PySpark scripts for performance and maintainability
  • Introduce best practices for code quality, testing, and CI/CD across data pipelines
  • Drive adoption of AI tooling and agentic workflows within the data engineering team
  • Ensure data quality, observability, and reliability across pipelines and platforms
  • Design and deliver self-service tooling and microservices that abstract platform complexity
  • Collaborate directly with the Customer’s scientific and engineering teams
  • Monitor platform performance, reliability, and cloud infrastructure costs
  • 5+ years of experience in data engineering
  • 3+ years of production experience with Databricks and Delta Lake
  • Strong expertise in medallion architecture and event-driven asynchronous pipeline design
  • Advanced proficiency in Python, PySpark, and SQL
  • Deep hands-on experience with Databricks, including Unity Catalog, Lakeflow Jobs/Workflows, and job optimization
  • Strong AWS expertise including S3, IAM, KMS, and services such as AWS Batch, ECR, EventBridge, Lambda, or API Gateway
  • Experience with infrastructure as code and CI/CD using Terraform and Databricks Asset Bundles
  • Practical experience with Git workflows, pull request reviews, and automated testing
  • Experience configuring secure CI pipelines using OIDC or service principals
  • Practical MLflow experience including experiment tracking, model registration, and reproducibility practices
  • Strong understanding of data quality, lineage, provenance, schema contracts, and versioning
  • Experience with data quality frameworks such as Great Expectations, Soda, pyDeequ, or Databricks Labs DQX
  • Experience with monitoring, observability, and cloud cost optimization
  • Upper-Intermediate English level or higher

WILL BE A PLUS

  • Experience packaging workloads in Docker containers and running batch jobs on AWS
  • Familiarity with experiment optimization tools such as scikit-optimize, BoTorch, Ax, and scipy
  • Experience building feature sets and train/test splits that avoid data leakage
  • Experience with regulated or high-security environments including data residency requirements
  • Experience disabling or restricting AI features in secured environments

PERSONAL PROFILE

  • Strong analytical mindset
  • Ownership and accountability
  • Ability to communicate complex technical concepts clearly
  • Proactive approach to problem-solving
  • Attention to scalability and maintainability
  • Collaborative and team-oriented attitude
Pay
Not stated
Where
Warsaw, pl
Work
Remote
Type
Full time
Posted
30 Oct, 2026
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