Senior Data Engineer (GovTech and Public Sector)

Job description

Company Description Are you an experienced Data Engineer ready to tackle complex, high-load, and data-intensive systems? We are looking for a Senior professional to join our team in Ukraine, Europe, working full-time on a project that will make a real impact in the public sector. At Sigma Software, we specialize in delivering innovative solutions for enterprise clients and public organizations. In this role, you will contribute to building an integrated platform that collects, processes, and visualizes critical indicators, enabling better decision-making and analytics. Why join us? You will work with a modern big data stack, have end-to-end involvement from ingestion to machine learning workflows, and be part of a professional team that values ownership, collaboration, and continuous improvement. PROJECT You will be involved in developing an integrated platform that processes both batch and streaming data, ensures secure and governed data environments, and supports advanced analytics and machine learning workflows. The solution will leverage modern big data technologies to provide actionable insights for the public sector. Job Description Design and implement data ingestion pipelines for batch and streaming data Configure and maintain data orchestration workflows (Airflow, NiFi) and CI/CD automation for data processes Design and organize data layers within Data Lake architecture (HDFS, Iceberg, S3) Build and maintain secure and governed data environments using Apache Ranger, Atlas, and SDX Develop SQL queries and optimize performance for analytical workloads in Hive/Impala Collaborate on data modeling for analytics and BI, ensuring clean schemas and dimensional models Support machine learning workflows using Spark MLlib or Cloudera Machine Learning (CML) Qualifications Proven experience in building and maintaining large-scale data pipelines (batch and streaming) Strong knowledge of data engineering fundamentals: ETL/ELT, data governance, data warehousing, Medallion architecture Strong SQL skills for Data Warehouse data serving Minimum 3 years of experience in Python or Scala for data processing Hands-on experience with Apache Spark, Kafka, Airflow, and distributed systems optimization Experience with Apache Ranger and Atlas for security and metadata management Upper-Intermediate English proficiency WILL BE A PLUS Experience with Cloudera Data Platform (CDP) Advanced SQL skills and Hive/Impala query optimization BS in Computer Science or related field Exposure to ML frameworks and predictive modeling Additional Information PERSONAL PROFILE Ownership mindset and proactive approach Ability to drive initiatives forward and suggest improvements Team player with shared responsibility for delivery speed, efficiency, and quality Excellent written and verbal communication skills