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Sigma Software

Global software development and IT consulting

Data Engineer

Data EngineeringConfirmed live in the last 24 hours
Full-timeWarsaw, PolandNo salary listedRemote

About the Job

Requirements

  • Three or more years of commercial experience in data engineering.
  • Two or more years of hands-on production experience with Databricks.
  • Strong expertise with Delta Lake, including medallion architecture and table optimization.
  • Advanced proficiency in Python, PySpark, and SQL.
  • Practical knowledge of Databricks components, including Unity Catalog, Lakeflow Jobs or Workflows, and job optimization.
  • Hands-on experience with AWS services including S3, IAM, and KMS, plus at least one of AWS Batch, ECR, EventBridge, Lambda, or API Gateway.
  • Experience designing event-driven and asynchronous data pipelines.
  • Strong knowledge of Infrastructure as Code and CI/CD practices.
  • Practical experience with Terraform and Databricks Asset Bundles.
  • Experience with Git workflows, pull request reviews, and automated testing.
  • Understanding of secure authentication approaches such as OIDC and service principals.
  • Practical experience with MLflow, experiment tracking, model registry, and reproducibility practices.
  • Strong understanding of data quality, lineage, schema contracts, and provenance concepts.
  • Experience with data quality frameworks such as Great Expectations, Soda, pyDeequ, or Databricks DQX.
  • Experience monitoring and optimizing data platform reliability and cloud costs.
  • Upper-intermediate or higher English proficiency.

Responsibilities

  • Design, develop, and maintain scalable and reliable data platforms and pipelines for analytics and operational use cases.
  • Build distributed data processing workflows using Apache Spark, PySpark, and Databricks.
  • Develop and evolve cloud-native data solutions using Azure and AWS services.
  • Model and optimize data structures for analytics, reporting, and downstream consumption.
  • Integrate data from multiple heterogeneous sources while ensuring data quality, consistency, and traceability.
  • Implement data quality controls, schema validation, lineage tracking, and monitoring processes.
  • Optimize performance, scalability, reliability, and cost-efficiency of data pipelines and infrastructure.
  • Collaborate with scientists, analysts, and engineering teams to translate business and research requirements into technical solutions.
  • Contribute to CI/CD processes, infrastructure automation, and engineering best practices.
  • Research and introduce new technologies and approaches within the data engineering ecosystem.

Desired Qualifications

  • Experience packaging workloads using Docker and running batch workloads in AWS.
  • Familiarity with ECR and containerized data processing solutions.
  • Experience with experiment optimization libraries such as scikit-optimize, BoTorch, Ax, or SciPy.
  • Understanding of machine learning feature engineering and leakage prevention techniques.
  • Experience working in regulated or high-security environments.
  • Knowledge of data governance, compliance, and data residency requirements.
  • Experience disabling or restricting AI-assisted tooling or features in secure environments.

About the Company

Sigma Software

Global software development and IT consulting

Sigma Software provides software development services and IT consulting to more than 170 clients worldwide. It builds large-scale software solutions and guides startups from concept to a ready product, across industries such as banking, automotive, advertising, telecommunications, cybersecurity, gaming, aviation, real estate, and healthcare. The company works by deploying teams of skilled engineers and consultants, delivering projects through global delivery centers and emphasizing clear communication, flexibility, and alignment with clients’ business goals. Sigma Software differentiates itself with recognition as a top outsourcing firm (IAOP World’s Top 100 Outsourcing), a wide geographic footprint, and the ability to take projects from idea through production for both established enterprises and startups. Its goal is to help clients achieve their business objectives by delivering reliable software products and expert IT advice on time and within scope.

Company size
1,001-5,000
Company stage
Not listed
Total funding
Not listed
Headquarters
Stockholms kommun, Sweden
Founded
2002

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