TD Applied Scientist Interview Questions
The questions to prepare for a TD Applied Scientist interview. Questions from real interview reports rank first. Updated daily.
Check whether a TD reference string is a palindrome using case normalization and two pointers.
Clean, deduplicate, normalize, and sort TD transaction records for model ingestion using hashing and deterministic parsing.
Find the longest contiguous TD transaction window containing at most k distinct merchants using a sliding window.
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.
Tests your ability to set up production monitoring for model quality, drift, and reliability.
Evaluates your model validation approach, including offline testing and readiness checks.
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Assesses data cleaning, imputation, and robustness techniques for financial modeling.
Use SQL window functions to rank regions by average 2024 yield within each country.
Ernst & Young
KBR
Maximus TechUse GROUP BY and HAVING to find duplicate patient records in a Johns Hopkins Medicine dataset.
Emerson
CareDx
SberbankOptimize a PostgreSQL reporting query using selective filtering, aggregation, indexing strategy, and execution-plan reasoning.
CapgeminiDDeltaX
Melaleuca: The Wellness