Hi, I'm Vitthal

I design and build data platforms, distributed systems and tooling (SDKs, APIs and Contracts) plus open source. Mostly in JVM (Scala, Java, Kotlin) and Python. Increasingly in Rust & Go. Write technical articles and sometimes speak in events/conferences.

• Resume: vitthalmirji.com/resume

• A few things I ship:

  • flowforge - Type-safe Scala data engineering toolkit with compile-time contract validation. Prevents schema drift before deploy
  • llm4s - reliable LLM apps in Scala
  • compile-time-data-contracts - schema checks that break the build, not prod
  • abortable-bytes - cancel-safe cloud uploads (scala/kyo POC)
  • toon4s - token-friendly JSON for LLM work
  • datapipelines-essentials-python - practical helpers for ETL in Python/Spark
  • I also contribute to:
    • cask
    • scalasql

• Ask me about: data engineering, data contracts, Scala, Functional programming, Spark/Databricks, GCP BigQuery, Kafka/Flink, and clean APIs.

• LinkedIn: linkedin.com/in/vitthal10

• I write technical posts on type-safe data engineering, Scala and production lessons.
• Writing: vitthalmirji.com
• My posts on vitthalmirji.com have crossed 25K+ views.
• Rock the JVM: Articles