Big Data Engineer

Data

Big Data Engineer

Data
-, Warszawa

Link Group

Full-time
B2B
Senior
Hybrid
27 - 35 USD
Net per hour - B2B

Job description

🚀 Big Data Engineer

Full-time | AdTech Platform | Python/Java/Scala


We’re looking for an experienced Big Data Engineer to join our high-impact team building the backbone of a global advertising platform delivering personalized content to millions of media-enabled devices.


Your work will directly influence data-driven decision making, real-time targeting, and analytics pipelines for one of the most advanced AdTech ecosystems in the industry.


🔍 What You’ll Be Doing

  • Build and maintain robust, scalable data pipelines to support attribution, targeting, and analytics
  • Collaborate closely with Data Scientists, Engineers, and Product Managers
  • Design and implement efficient storage and retrieval layers for massive datasets
  • Optimize data infrastructure and streaming processing systems (e.g. Flink, Apache Ignite)
  • Drive quality through unit tests, integration tests, and code reviews
  • Develop and maintain Airflow DAGs and other orchestration pipelines
  • Translate business needs into robust, technical data solutions
  • Lead or support A/B testing and data-driven model validation
  • Contribute to R&D initiatives around cloud services and architecture


✅ What You Bring

  • 5+ years of experience in backend/data engineering using Python, Java, or Scala
  • Strong experience with Big Data frameworks (Hadoop, Spark, MapReduce)
  • Solid knowledge of SQL/NoSQL technologies (e.g. Snowflake, PostgreSQL, DynamoDB)
  • Hands-on with Kubernetes, Airflow, and AWS (or similar cloud platforms)
  • Stream processing experience: Flink, Ignite
  • Experience with large-scale dataset processing and performance optimization
  • Familiarity with modern software practices: Git, CI/CD, clean code, Design Patterns
  • Fluent in English (B2+)
  • Degree in Computer Science, Telecommunications, or related technical field


⭐ Bonus Points

  • Experience with GoLang or GraphQL
  • Hands-on with microservices or serverless solutions
  • Experience in container technologies (Docker, Kubernetes)
  • Previous work in AdTech, streaming media, or real-time data systems

Tech stack

    Backend

    advanced

    Big Data

    advanced

    AWS

    regular

    Git

    regular

    SQL

    regular

Office location

Published: 16.05.2025