Big Data Engineer

Data

Big Data Engineer

Data
-, Kraków +1 Location

Link Group

Full-time
B2B
Senior
Hybrid
27 - 36 USD
Net per hour - B2B

Job description

🚀 Big Data Engineer

📍 Remote or Hybrid (EMEA preferred) | 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

    English

    B2

    AWS

    advanced

    Airflow

    advanced

    Flink

    advanced

    Kubernetes

    advanced

    Java

    advanced

    SQL

    advanced

    Python

    advanced

    Scala

    advanced

    Big Data

    advanced

    NoSQL

    advanced

Office location