Backend Engineering Skills

• Languages: Clojure, Java, Elixir, Python, NodeJS, SQL
• Databases:
  • Document-based: MongoDB
  • Relational: PostgreSQL
  • Key/value: Redis
  • Sharded: Cassandra, ScyllaDB
• Other systems:
  • Message Queues: Kafka
  • Elasticsearch
• Tools:
  • IDEs: IntelliJ, Emacs, VSCode
  • Git
  • Linux CLI

Data Engineering Skills

• Languages: Java, SQL
• Compute: Spark, Databricks, AWS EMR (Hadoop)
• Storage:
  • Data warehouse: Redshift, BigQuery, Hive
  • Data Lake: S3, Delta Lake
• Orchestration: Airflow