e. g. Python, Warsaw, Startup

Senior Data Engineer (NXJ-70)

location-pointer-icon Europe
AI/ML
remote

We are looking for a talented Senior Data Engineer who thrives in data-rich environments and is passionate about building high-performance, reliable data systems. The ideal candidate will work closely with AI and ML teams to develop real-time pipelines, tracking systems, and feature store foundations that power advanced analytics and machine learning production.

Responsibilities

  • Build and maintain high-performance, reliable data pipelines and infrastructure
  • Ensure feature availability and consistency for ML teams
  • Develop tracking systems and feature store foundations to support analytics and ML production
  • Collaborate with ML and analytics teams to optimize workflows and enable data-driven decision-making
  • Implement best practices for data quality, monitoring, and scalability

Requirements

  • Strong software engineering fundamentals (clean code, testing, system design)
  • Proven experience building real-time, low-latency data services
  • Experience operating in production at scale (high throughput, distributed systems)
  • Expertise with modern data stack technologies (e.g., Kafka/Kinesis, Spark/Flink/Beam, Snowflake/BigQuery/Redshift)
  • Ability to design schemas, ingestion flows, and data quality frameworks
  • Experience collaborating with ML teams on feature availability and consistency

Will be a plus

  • Experience supporting ML systems (feature serving, online/offline consistency)
  • Production experience with model inference pipelines
  • Strong DevOps experience (Docker, Kubernetes, CI/CD)
  • Experience with cloud-native architectures (AWS/GCP)
  • Experience implementing data observability / lineage frameworks

What we offer

  • Competitive salary and benefits package
  • Medical insurance
  • Top equipment kit
  • Full Remote
  • Collaborative and innovative work environment
  • Career growth and development opportunities
  • A chance to work with a talented and driven team of professional

About the project

An AI-powered performance marketing company that manages and optimizes campaigns at scale across a broad range of verticals. The business is built around data-driven decision-making and automation, using a proprietary technology stack that connects with major advertising and tracking ecosystems to support real-time optimization and reliable measurement.

Their internal platform streamlines day-to-day operations for performance teams by providing centralized monitoring, fast feedback loops, and automated controls that reduce manual work. In-house machine learning supports smarter decisioning across core workflows—helping improve efficiency, maintain stable performance, and scale campaigns with consistency while staying focused on measurable business outcomes.

Newxel
Outstaff
< 10
Industry
Adtech/Advertising, Big Data, Embedded, GameDev, Fintech/Banking
Founded
2017

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