Senior Data Engineer

🕒 August 21

🇵🇱 Poland – Remote

⏰ Full Time

🟠 Senior

🚰 Data Engineer

👻 Ghost score 36%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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MWDN

WebsiteLinkedInAll Job Openings

51 - 200 employees

💼 Consulting

📦 Logistics

🏥 Healthcare

Consulting • Logistics • Healthcare

MWDN is a comprehensive IT services company that specializes in software development, web design, mobile development (iOS and Android), and desktop development. With over 200 in-house software engineers, MWDN provides a range of services including staff augmentation, dedicated teams, and global IT recruitment. Operating globally with delivery centers in Central and Eastern Europe, MWDN effectively bridges businesses in the USA, Europe, and Israel to top-tier tech talent while focusing on cost-effective solutions and personalized services tailored to client needs.

📋 Description

• Design, build, and enhance scalable data pipelines processing ad server and ancillary data • Ingest and normalize data from SSPs, DSPs, ad servers including GAM, and third-party reporting APIs • Develop ETL/ELT workflows transforming raw data into analytics-ready datasets • Create data models for campaign performance optimization, supply analysis, supply allocations, and profit maximization • Build and maintain data warehouses and data lakes optimized for ad-tech query patterns • Implement data quality monitoring, validation, and anomaly detection for data streams • Support Executive, BI, and analytics teams with clean, documented, performant data infrastructure • Ensure GDPR and CCPA compliance in data collection, storage, and processing

🎯 Requirements

• 5+ years of professional data engineering experience • 2+ years working with programmatic advertising and ad-tech data (GAM) • Strong proficiency in Python and SQL • Hands-on experience with data warehouses: BigQuery, Snowflake, Redshift, ClickHouse • Experience with batch processing frameworks: Spark, dbt, Airflow • Understanding of ad-tech data structures: bid requests, impressions, OpenRTB schemas, log-level data • Experience with cloud platforms: AWS, GCP • Experience with infrastructure-as-code • Ability to work partial US work hours, available until 2pm ET • Familiarity with SSP reporting APIs and log-level data, including Magnite, PubMatic, Index Exchange, and Xandr • Experience with Google Ad Manager reporting, Data Transfer files, and BigQuery exports • Knowledge of ad-tech revenue metrics, auction analytics, demand partner performance, and supply chain data • Familiarity with Python and SQL; Scala is nice to have • Experience with Apache Spark, dbt, Apache Flink • Experience with BigQuery, Snowflake, ClickHouse, and Redshift • Experience with Airflow, Dagster, or Prefect • Experience with S3, GCS, Delta Lake, and Parquet • Experience with AWS, GCP, Terraform, and Kubernetes • Experience with ML feature engineering for bid optimization or yield prediction is nice to have • Background in publisher-side monetization data products is nice to have • Familiarity with differential privacy and clean rooms is nice to have • Experience with CTV/OTT advertising data and video ad metrics is nice to have • Knowledge of identity resolution and cross-device data challenges is nice to have

🏖️ Benefits

• Security through careful client vetting to minimize risks and ensure reliable, timely payments • Career support and assistance finding new projects • Legal guidance for independent contractor or sole proprietorship status, taxes, and related processes • English courses • Professional growth opportunities • Team-building events • Flexible working hours • 29 days of PTO (18 working days per year plus all national holidays) • 10 paid recovery days • Full financial and legal support for independent contractors • Free English classes with native speakers or Ukrainian teachers • Dedicated HR support