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CoreStar
CoreStar

Data Engineer (ClickHouse)

Cyprus
Full-Time

 ⭐️ CoreStar is a dynamic technology company supporting partners in heavy load industries, high-performance solutions. Our expert teams bring a startup-driven mindset, focusing on innovation, collaboration, and efficiency in every project. At CoreStar, you’ll have the opportunity to grow your skills, tackle exciting challenges, and directly contribute to impactful products.


Project Overview: 

High-load in-house platform handling multiple third-party integrations, data collection, and comprehensive reporting systems. The system processes large volumes of real-time data and requires high availability with performance optimization.


Stack:

AWS, S3, Lambda, Kafka/MSK, Debezium/CilckPipes, MySQL (RDS), ClickHouse, Tablue, Terraform/CDK, Git, NodeJs/Python, SQL

📌 Key Responsibilities: 

  • Design and maintain scalable ETL/ELT pipelines
  • Handle CDC ingestion from Amazon RDS (MySQL) via Debezium + Kafka
  • Load and optimize high-throughput data flows into ClickHouse
  • Tune ingestion in ClickHouse: partitioning, TTLs, ORDER BY keys
  • Use Parquet/ORC and partitioning for efficient storage in S3
  • Integrate datasets into BI
  • Implement monitoring and alerting for data pipelines
  • Use Git + CI/CD and manage infrastructure with Terraform or AWS CDK


📌 Requirements:

  • Proven experience building high-throughput data ingestion pipelines
  • Proficiency with Kafka/MSK and Debezium or CilckPipes
  • Experience with ClickHouse and Warehouse concepts and architecture
  • SQL, Git, CI/CD
  • Infrastructure-as-Code: Terraform


📌 Nice to have:

  • Design and maintain scalable ETL/ELT pipelines using AWS Glue, Airflow, and S3
  • Experience with dbt
  • Familiarity with MySQL binlog-based CDC
  • BI reporting knowledge
  • Experience monitoring and tuning ClickHouse, quries, NodeJS


📌 Benefits:

  • 24 working days of paid annual leave
  • 6 days of paid sick leave 
  • Official employment
  • Medical insurance
  • Coffee zone with fruit & snacks available in the office
  • Corporate Lunch provided by the company
  • Gym and sports classes
  • Healthy and friendly work atmosphere 


Join us and be one of the Core Stars! ⭐

CoreStar
CoreStar
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Data Engineer
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