D. E. Shaw India interview process (2026)
Round-by-round breakdown of the D. E. Shaw India software engineering interview across 4 levels and 13 rounds: interview mode, sample questions, and worked solutions.
Technology Developer Intern / Software Developer Intern (Summer, ~2 months)
Difficulty: Hard · Timeline: Campus drives run in the placement season (typically Jul-Sep · Recommended prep: 6-10 weeks · Cooldown: No formally published cooldown; typically re-apply the next
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Round 0: Online Assessment (HackerRank)
Assessment · ~90-95 minutes · difficulty 3/5 · elimination round
Mode of interview: Online assessment · HackerRank
Sample question: Remove K Digits (Lexicographically Smallest After k Deletions) — Given an n-digit number as a string (n up to 10^5) and an integer k, remove exactly k digits so the resulting number is the smallest possible; return it with no leading zeros ("0" if everything is removed). Equivalent DE-Shaw phrasing: 'given a string and an integer k, return the lexicographically smallest string after at most k deletions.'
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Round 1: Technical Interview 1 (DSA + CS fundamentals)
Onsite · ~45-60 minutes · difficulty 3/5 · elimination round
Mode of interview: Live interview · HackerRank CodePair
Sample question: Insert Delete GetRandom O(1) — Design a data structure supporting insert(val), remove(val), and getRandom() each in average O(1). insert/remove return whether the set changed; getRandom returns a uniformly random current element.
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Round 2: Technical Interview 2 (DSA + OOP/DBMS + fit)
Onsite · ~45-90 minutes · difficulty 3/5 · elimination round
Mode of interview: Onsite or virtual onsite interview
Sample question: Best Time to Buy and Sell Stock — Given an array of daily prices, find the maximum profit achievable from a single buy followed by a later sell. Return 0 if no profit is possible.
Member Technical Staff / Member Technical (SDE-1, entry / new-grad)
Difficulty: Hard · Timeline: 4 weeks · Recommended prep: 6-10 weeks · Cooldown: ~6-12 months
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Round 0: Online Assessment (HackerRank)
Assessment · ~50-90 min · difficulty 3/5 · elimination round
Mode of interview: Online assessment
Sample question: Binary Tree Cameras — Given the root of a binary tree, install cameras on tree nodes where each camera monitors its parent, itself, and its immediate children. Return the minimum number of cameras needed to monitor all nodes.
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Round 1: Technical Interview 1 (HackerRank CodePair, video)
Phone · ~45-90 min · difficulty 3/5 · elimination round
Mode of interview: Remote phone or video interview
Sample question: Search in Rotated Sorted Array — Given an ascending array of distinct integers rotated at an unknown pivot, and a target value, return the index of the target in O(log n) time or -1 if it is absent.
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Round 2: Onsite Technical Round(s) (loop)
Onsite · ~60 min · difficulty 4/5
Mode of interview: Onsite or virtual onsite interview
Sample question: Kth Smallest Number in a Multiplication Table — Given m, n and k, consider the m-by-n multiplication table where cell (i, j) = i*j. Return the k-th smallest value in this table.
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Round 3: HR / Managerial Round
Behavioral · ~30-45 min · difficulty 1/5
Mode of interview: Live behavioral interview
Senior Member Technical Staff / Senior Member, Tech (SDE-2, experienced)
Difficulty: Hard · Timeline: ~4 weeks · Recommended prep: 8-12 weeks · Cooldown: ~6-12 months
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Round 0: Telephonic / Online Coding Screen (HackerRank)
Assessment · ~60-90 min · difficulty 3/5 · elimination round
Mode of interview: Online assessment
Sample question: Number of Islands (with modifications) — Given an m x n binary grid where 1 is land and 0 is water, count the number of islands (maximal groups of 1s connected 4-directionally). DE Shaw asks it with modifications layered on top (e.g. altered connectivity/queries).
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Round 1: Coding & Problem Solving Round 1
Onsite · ~60 min · difficulty 4/5
Mode of interview: Onsite or virtual onsite interview
Sample question: Maximum of Minimum for Every Window Size — Given an array of n integers, for every window size k from 1 to n compute the minimum of each contiguous window of that size, and output the maximum such minimum for each k. Solve in O(n) using previous/next smaller elements.
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Round 2: Multithreading / Concurrency Round
System_design · ~60 min · difficulty 4/5
Mode of interview: Live system design interview
Sample question: Design a reliable, low-latency message delivery system for a trading application — Design the messaging backbone for a trading application: guarantee reliable, ordered, low-latency delivery of market/order messages. Discuss transport choice, ordering and dedup, backpressure, retries/acks, failure recovery, and how you keep tail latency bounded under bursty load.
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Round 3: Coding & Problem Solving Round 2 / Design & LLD
Onsite · ~60 min · difficulty 4/5
Mode of interview: Onsite or virtual onsite interview
Sample question: Design a migration from RDBMS to NoSQL for a market-data pipeline — You must move a large relational market-data store to a NoSQL system. Discuss migration challenges: data modeling / denormalization, consistency and dual-write during cutover, backfill of terabytes of historical data, query-pattern shifts, and rollback strategy.
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Round 4: HR / Managerial Round
Behavioral · ~30-45 min · difficulty 1/5
Mode of interview: Live behavioral interview
Lead, Tech (SDE-3 / Lead)
Difficulty: Hard · Timeline: Similar batch-based process, ~2-4+ weeks (inferred; no level · Recommended prep: Advanced DSA + deep concurrency/low-late · Cooldown: Unknown / not published.
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Round 0: Technical loop (coding + concurrency + design) + leadership discussion
Onsite · ~60-min · difficulty 4/5
Mode of interview: Onsite or virtual onsite interview
Sample question: MST with 0/1 Edge Weights on a Complete Graph — In a complete graph on V vertices, a given set of E edges have weight 0 and every remaining pair of vertices is connected by an edge of weight 1. Compute the weight of the minimum spanning tree. (Answer = number of connected components formed by the 0-weight edges, minus 1.)
Other companies' interview processes
Worked sample solutions (code, design diagrams, and STAR answers) for every round are available in the FAANGPlus app: open interview processes.