Blockchain Data Analyst & Researcher

Lukka is a company focused on solving complex data and technology challenges in the blockchain and digital assets industry. Established in 2014, it develops products addressing cryptocurrency regulations and provides tax-related solutions. The company operates a growing Poland-based team collaborating directly with US and global stakeholders.

• 3+ years hands-on experience in Data Science, Data Engineering, or a related hybrid role.
• Background in blockchain or crypto analytics, familiar with on-chain data structures and asset classification.
• Experience with streaming technologies such as Apache Flink or Spark Streaming.
• Knowledge of Data Lakehouse platforms like Apache Iceberg or Apache Hudi.
• Familiarity with AWS data services including S3, RDS, Spark SQL, and PySpark.
• Experience with data grid technologies such as Redis, Hazelcast, or Apache Ignite.
• Advanced SQL query writing, performance tuning, and window functions.
• Proficient in Python libraries like Pandas, Polars, and Scikit-learn.
• Skilled in building high-throughput ingestion pipelines using REST/WebSocket APIs and JSON-RPC.
• Strong understanding of ETL fundamentals and schema mismatch management.
• Systematic debugging approach and ability to work with large, semi-structured, or undocumented data sources.

• Maintain an AI-native and blockchain-forward mindset, leveraging emerging trends and generative technologies.
• Architect intuitive and unified data models for granular insights across various protocols.
• Reverse-engineer smart contracts and on-chain events to develop production-grade SQL/dbt models.
• Design schemas to index and transform raw blockchain data with 100% accuracy.
• Define key metrics (TVL, Volume, Fees) and ensure data quality by filtering wash trading, bot activity, and Sybil attacks.

We would like to inform you that the data administrator is Lukka Poland Sp. z o. o. based in Warsaw, Poland, (hereinafter referred to as the "Administrator"). You have the right to request access to your personal data, rectification, deletion or limitation of processing, the right to object to processing, as well as the right to transfer data and submit a complaint to the supervisory authority. Personal data will be processed for the purpose of implementing the recruitment process. Providing data to the extent resulting from the Act of June 26, 1974, Labor Code, is obligatory. In the remaining scope, providing data is voluntary. Refusal to provide mandatory data may result in the inability to carry out the recruitment process. The administrator processes mandatory data on the basis of his legal obligation, and in the case of additional data, the basis for processing is consent. Personal data will be processed until the recruitment procedure is completed and for the period of possible claims, and in the event of consent to participate in future recruitment procedures - until the consent is withdrawn. Consent to the processing of personal data may be withdrawn at any time. If you apply for a position at Lukka, your personal data will be processed outside the European Economic Area (EEA). Specifically, it will be processed and viewed in-house by certain Lukka employees in the United States.