Data Engineer

1 week ago

Limassol, Limassol, Cyprus CoreStar Full time

CoreStar
is a dynamic technology company supporting partners in the fintech and iGaming industries with scalable, 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 Power 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 or AWS CDK

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
  • Power BI reporting knowledge
  • Experience monitoring and tuning ClickHouse clusters 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

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