TD Applied Scientist Interview Questions
The questions to prepare for a TD Applied Scientist interview. Questions from real interview reports rank first. Updated weekly.
Find the longest contiguous TD transaction window containing at most k distinct merchants using a sliding window.
Clean, deduplicate, normalize, and sort TD transaction records for model ingestion using hashing and deterministic parsing.
Check whether a TD reference string is a palindrome using case normalization and two pointers.
Implement an LRU cache for TD mobile banking sessions using a hash map and doubly linked list with O(1) operations.
Explain how you weighed accuracy, generalization, complexity, and operational constraints when selecting a model architecture.
Evaluates your ability to diagnose segment-level issues and iterate on model performance.
Assesses your feature engineering judgment for banking-grade data and risk constraints.
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Assesses data cleaning, imputation, and robustness techniques for financial modeling.
Use GROUP BY and HAVING to find duplicate patient records in a Johns Hopkins Medicine dataset.
Emerson
CareDx
SberbankRank Paytm collection agents by last-month recovery rate using joins, aggregation, a CTE, and date filtering.
PaytmUse GROUP BY and HAVING to exclude students missing marks in two or more subjects.
PayPal