Sample Answer
(S) I implemented soft deletion and auditing for user accounts in a SaaS platform where regulatory requirements demanded a full change history. (T) The goal was to support soft delete, track who changed what and when, and keep query performance acceptable on a 10M+ row table. (A) I added a deleted_at and deleted_by column, and updated all read paths to filter out deleted records by default, with explicit flags for admin views. For auditing, I introduced an audit_log table with entity_type, entity_id, changed_by, changed_at, operation, and a JSONB diff of before/after state. Writes to the audit table were done in the same transaction as the main update to ensure consistency. I indexed frequently queried columns (entity_type, entity_id, changed_at) and added partitioning by month to keep queries fast. I exposed admin APIs to retrieve history and restore soft-deleted records. (R) This design let us meet audit requirements and respond to compliance requests in minutes instead of hours. Query performance remained within 10–15% of pre-change baselines, and we passed our next external audit with zero findings related to data history.
Walk me through a recent multi-channel digital marketing campaign you managed end-to-end. How did you set objectives, choose channels, allocate budget, and measure success?
In your resume you note improving or optimizing [a process, KPI, or metric]. What specific baseline metrics did you start from, what steps did you personally take, and how did you verify that the improvement was due to your changes rather than external factors?
In your civil engineering studies, what specific design coursework or project work did you complete related to irrigation channels or canals (e.g., design of lined/unlined canals, distributaries, minors)? Describe one such design in detail, including how you determined discharge, permissible velocity, section dimensions, and lining choice for Gujarat-type soil and climate conditions.
Based on your hydrology and irrigation engineering background, explain how you would estimate the irrigation water requirement for a kharif crop in a semi-arid region of Gujarat. Walk me through each step: from reference evapotranspiration estimation, crop coefficient selection, effective rainfall calculation, to arriving at canal discharge for a given command area.
On your resume you mention working on a cross-functional project (e.g., involving multiple teams or stakeholders). Describe a situation from that project where priorities conflicted—how did you navigate the trade-offs and what was the final outcome?