Senior Data Engineer
Appodeal is a dynamic US-based product company with a truly global presence.
We have offices in Warsaw, Barcelona and Virginia along with remote team members located around the world.
Our company thrives on diversity, collaboration, and innovation, making us a leader in the mobile app monetization space.
Why Appodeal?
At Appodeal, we’re more than just a company—we’re a team united by a common mission: to help every person discover and grow their talents!
We take pride in our cutting-edge product and our internationally dispersed team of talented professionals.
Here’s what we value, and what we hope you do too:
- Continuous Learning and Growth: We are passionate about learning, growing personally, and building rewarding careers.
- Making an Impact: We are committed to building a history-defining company that leaves a lasting impact on the mobile app industry.
- Solving Exciting Challenges: We tackle complex problems every day, supported by a team of world-class professionals and mentors.
- Enjoying the Journey: We believe in having fun while working toward our goals.
We’re looking for a Senior Data Engineer to join our Exchange team in Barcelona! You’ll help us build and scale a modern AdTech data platform that powers real-time bidding, analytics, and machine learning across billions of ad requests daily.
Our stack combines Databricks + Delta Lake for large-scale processing, PySpark for flexible transformations, and an on-prem Druid cluster for ultra-fast analytical queries.
If you enjoy owning complex pipelines, optimizing performance, and working with a team that values autonomy and impact, this role is for you.
What You’ll Do:
- Shape and evolve our data platform architecture, ensuring reliability, scalability, and performance across ML and analytics workflows.
- Design, build, and orchestrate PySpark pipelines running on Databricks + Delta Lake, processing terabytes of data daily.
- Operate and optimize our on-prem Druid cluster, enabling real-time insights and low-latency analytics.
- Define and promote best practices for data quality, versioning, and lifecycle management across teams.
- Develop internal tools and automations that boost team efficiency and streamline data delivery.
- Collaborate closely with MLOps, Data Science, and Product teams to ensure smooth data access and cross-team consistency.
What We’re Looking For:
- 4+ years of hands-on experience in data engineering.
- Strong skills in Python 3 and PySpark.
- Proven experience with AWS S3, Databricks, Delta Lake, and data warehousing concepts.
- Familiarity with data orchestration tools (Dagster, Airflow) and streaming technologies (Kafka, Spark).
- Solid understanding of data modeling, analytics, and ML pipelines.
- Based in Barcelona or excited to relocate and join us here.
Nice to Have:
- Experience with Druid or other OLAP systems (ClickHouse and etc.).
- Background in building or scaling ML data platforms.
- Passion for real-time data processing and performance optimization.
Why You’ll Love Working With Us:
- Be part of a core AdTech team processing billions of auction events across global data centers.
- Work with a modern data stack — Databricks, Delta Lake, Druid, Kafka, AWS, Dagster
- Enjoy autonomy and ownership in a fast-paced, startup-style environment.
- Collaborate with exceptional engineers, data scientists, and MLOps experts who care deeply about scalability and precision.
With an outstanding product and a mission that excites and inspires, Appodeal offers a unique opportunity to make an impact while being part of an amazing team.
Join us and help shape the future of mobile app success!
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