I applied through a recruiter. The process took two weeks.

There was a team match first, followed by one technical screen. The final loop includes:

• One hiring manager interview
• One system design interview
• Two coding interviews featuring practical, multi-part questions with follow-ups

CSV / Log Query Engine:

• Implement CSVEngine(data: str) where data is a raw CSV string. Expose get_all() → list[dict] returning rows as dicts keyed by column name.
• Add select(columns: list[str]) → list[dict] that returns only the listed columns.
• Add filter(column, op, value) where op is one of EQ, LT, GT, CONTAINS. Return all rows matching the predicate.
• Support engine.filter(...).filter(...).select(columns) — a chained, fluent API returning the combined result.