Data Modelling Mock for Data Engineers with Hemangini Malhotra

System design interviews for Data Engineers test how you think, not just what you know.

This mock interview is designed for Junior to Senior Data Engineers preparing for system design rounds at product companies and startups.

What you’ll get

1. A realistic data modelling interview simulation
2. Questions focused on data pipelines, data modeling
3. Live feedback on schema design, SCD design and implementation specific pointers
4. Clear guidance on what to improve to meet Senior DE expectations

Why this mock

1. Conducted by a Lead Engineer at Postman with 8+ years in Data Engineering
2. Based on real interview patterns, not textbook designs

Ideal if you struggle with structuring answers, making trade-offs, or confidently explaining large-scale data systems.