Open Sourcing the Closed-Source
Hi, I’m Harsh Kumar
DSA. Math.Data Engineering.
Data engineer with 10+ years building production systems. Learning in public, available to consult.
Databricks Data Engineer
Datacamp Data Engineer
SQL Associate
Python Fundamentals
On YouTube
The Journey, Documented
Weekly videos on DSA, math foundations, and data engineering. No fluff, no polish.
Data Engineering
PySpark Full Course
Complete PySpark course covering RDDs, DataFrames, Spark SQL, and real-world data engineering workflows.
Playlist
DSA
Algorithms for Data Engineers
DSA concepts applied to real data engineering problems: pipelines, distributed systems, and performance optimization.
Coming Soon
DSA
New video dropping this week
Following along with EPI, working through the first problems and connecting them to data systems.
Active Now
Currently Studying
Month 1 of 17. One primary resource at a time.
Month 1Month 17
EPI Python
DSA
Elements of Programming Interviews (Python)
Day 1: Introduction
1.5 hrs / day
MathTrackX
Math
EDX MathTrackX
Month 1: Foundations
30 min / day
Consulting
Work With Me
Reach out if:
- You need a consulting partner who works like an engineer, not a salesperson
- You want to modernize pipelines with Fabric, dbt, or Snowflake
- You care more about clean, robust data systems than vanity metrics
- You want to build a clear, practical data culture
Databricks Data Engineer Associate
Datacamp Data Engineer Associate
SQL Associate