Senior Data Engineer (f/m/d)

Job summary

adj*** builds the technologies behind mobile apps growth and monetization. With our core product Playtime Arcade, we've become the global leader in rewarded advertising, an ad unit built on a simple premise: users earn real in-app rewards for engaging with new apps.

Qualifications

• into high-performance streams, enable Data Scientists to contribute new features and implement features yourself when needed..
• Pipeline bottlenecks don't survive long around you.
• You know how to identify and eliminate inefficiencies in complex ETL jobs, whether handling high-volume batch processing or real-time streaming systems like Kafka.
• At adj***, data velocity is critical: slow pipelines directly impact model freshness and prediction quality at sub-100ms inference.
• You think in layers, not tables.
• You move beyond raw data to design robust, multi-layered data architectures using dbt, and can reason confidently about storage formats, Data Lakehouse models, and what belongs where in a 1PB+ data lake.
• Familiarity with Medallion Architecture is a strong plus.
• The bridge between Data Science and Backend.
• You've worked closely with Data Scientists on online ML systems with low latency
• and understand what it takes to make experimental research production-ready.
• Strong Java required; Go or Python a plus.
• Owns quality, not just delivery.

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Relocation