Learn directly from Crispus Roshan

I've worked in data engineering for more than 10 years, and I've run 200+ technical interviews from the hiring side, across banking, healthcare, automotive and financial exchanges. I've also made the mistakes myself: my first big tech interview loop in 2019 didn't go as planned. I changed how I prepared, landed my first big tech role in 2021, and later held offers from several big tech companies at once.

That's what I teach. I've watched strong engineers lose offers by building pipelines they can't explain, trusting AI-written code without tests, and answering design questions without trade-offs. In my courses you build real pipelines with Claude Code, prove they work, and practise answering the way hiring teams score.