
Data Engineer
Sigma Software · Warsaw, Masovian Voivodeship, Poland · Remote
- Software & SaaS
- 1,001–5,000 employees
- London
Strong hiring record · median 38 days open
Hiring signal
Actively hiring
Posted 5 days ago · still listed on the employer's own board · How we score
All reasons
In its favour
- Posted 5 days ago
- Still listed on the employer's own board
- 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 leveraging 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 closely 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
- 3+ years of commercial experience in Data Engineering
- 2+ 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
- Deep practical knowledge of Databricks components including Unity Catalog, Lakeflow Jobs / Workflows, and job optimization
- Hands-on experience with AWS services including S3, IAM, KMS, and 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 working 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 level
WILL BE A PLUS
- 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 ML 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/features in secure environments
Skills
- Spark
- PySpark
- Databricks
- Azure
- AWS
- Delta Lake
- Python
- SQL
- Unity Catalog
- S3
- IAM
- KMS
- AWS Batch
- AWS ECR
- AWS EventBridge
- AWS Lambda
- API Gateway
- Terraform
- Git
- OpenID Connect
- MLflow
- Great Expectations
- Docker
- SciPy
- Machine Learning
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- Senior Data EngineerSigma Software · Warsaw, Masovian Voivodeship, Poland5d ago
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