Java Developer with Big Data

Java Developer with Big Data

Java
20 000 - 23 000 PLN
Net per month - B2B
Full-time
B2B
Senior
Hybrid

Tech stack

    Java

    master

    AWS

    master

    Hadoop

    advanced

    MySQL

    advanced

    Kafka

    regular

    Scala

    nice to have

Job description

🧩 Mandatory Skills

  • Java and/or Scala (Scala preferred)
  • AWS (strong proficiency)
  • Apache Kafka
  • Apache Spark or Hadoop or Hive
  • SQL (advanced level)
  • Data pipeline development in AWS environment

⚙️ Required Experience

  • 5+ years of experience in backend or big data development
  • Hands-on experience building scalable data pipelines in the AWS ecosystem
  • Solid knowledge of distributed systems and large-scale data processing
  • Experience with MySQL, Cassandra, and other structured/unstructured databases
  • Exposure to fraud detection, real-time analytics, or machine learning models is a plus
  • Familiarity with real-time streaming platforms like Apache Flink, Spark Streaming, or Apache Pinot

🎯 Responsibilities

  • Design, develop, and optimize scalable big data pipelines
  • Implement real-time and batch data processing using Spark and Kafka
  • Deploy solutions on AWS using services like EMR, S3, Lambda, Glue, etc.
  • Collaborate with data scientists and architects to integrate fraud detection logic
  • Monitor and troubleshoot performance and data quality issues
  • Maintain documentation and follow DevOps best practices for deployment and CI/CD

Nice to Have

  • Experience with Python for scripting or data engineering
  • Prior work on fraud analytics or payment systems
  • Familiarity with AWS Glue, Redshift, or Athena


Published: 05.08.2025
Office location
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