Senior Data Engineer
@ EER Poland

Capon Bridge, West Virginia, United States
PLN 240,000
On Site
Full Time
Posted 11 hours ago

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Job Details

About the Company

EER Poland is a leading mobile marketing and audience platform empowering the mobile app ecosystem. They directly integrate with over 500,000 monthly active apps and process massive volumes of first-party data to drive intelligent, real-time decisions and fuel growth for partners.

About the Role

The Senior Data Engineer role at EER Poland involves solving complex problems at scale, working with real-time data pipelines, distributed systems, and performance optimization in a hybrid work environment (2 days on-site: Mondays & Wednesdays in Warsaw).

Responsibilities

  • Develop and maintain real-time streaming and batch data pipelines processing billions of records per day.
  • Own services and infrastructure for request enrichment, data exports, campaign analytics, and fraud detection with strict low-latency SLAs.
  • Build end-to-end solutions from design through deployment and monitoring.
  • Develop monitoring and alerting for critical Big Data pipelines.
  • Work with a range of technologies including Flink, Spark, Kafka, Protobuf, Kubernetes, Argo WF, Jenkins, GitHub, using Golang, Java/Scala, and Python.
  • Utilize modern AI-assisted development tools to enhance coding, testing, and debugging.
  • Participate in an on-call rotation to support production systems ensuring high availability.
  • Collaborate in an Agile environment, contributing ideas and taking initiative on projects.

Requirements

  • 4+ years of backend or data engineering experience.
  • Strong proficiency in Golang and Java/Scala; experience with Python & SQL.
  • Hands-on experience with streaming platforms (Flink, Spark, Kafka).
  • Production experience with Kubernetes and containerized services.
  • Solid knowledge of cloud infrastructure (AWS, GCP, OCI).
  • Familiarity with CI/CD and observability tools (Prometheus/Grafana) and distributed systems.
  • Ability to switch contexts effectively across projects and technologies.
  • Self-learner, responsible, independent, strong team player.
  • Excellent communication skills.

Preferred Experience

  • Building and maintaining high-volume, low-latency pipelines.
  • Experience with Agile methodologies.
  • Creative problem-solving in complex, multi-task environments.

Benefits

  • Competitive salary
  • 20 days of paid vacation (plus Polish public holidays).
  • Gym membership
  • 1-week annual workation within the European Union.
  • Opportunity to work with a small, skilled team on high-impact projects.

Key skills/competency

  • Data Pipelines
  • Real-time Streaming
  • Batch Processing
  • Distributed Systems
  • Performance Optimization
  • Golang
  • Java/Scala
  • Python
  • Kubernetes
  • Cloud Infrastructure

How to Get Hired at EER Poland

🎯 Tips for Getting Hired

  • Customize your resume: Highlight real-time data pipeline experience.
  • Showcase technical skills: Emphasize Golang, Java/Scala, and Python expertise.
  • Research EER Poland: Understand their mobile marketing platform and challenges.
  • Prepare for system design: Be ready for questions on distributed systems and scalability.

📝 Interview Preparation Advice

Technical Preparation

Review streaming platforms like Flink and Kafka.
Practice real-time data pipeline design.
Study container orchestration using Kubernetes.
Familiarize with CI/CD and cloud tools.

Behavioral Questions

Describe handling large-scale data challenges.
Explain your teamwork in Agile environments.
Discuss problem solving under pressure.
Share experience with cross-functional collaboration.

Frequently Asked Questions