ProbabilityHardResearch round
Interview library · Singapore, Singapore
Susquehanna (SIG) quant interview questions in Singapore
23 questions · 3 reported stages · rank 4 market · pay in SGD
What is the Susquehanna (SIG) quant interview like in Singapore?
Susquehanna (SIG) runs the same 3 stage quant loop in Singapore as elsewhere: screen, probability rounds, on-site. Local demand is concentrated in systematic trading, commodities, macro, quant research. Pay is benchmarked in SGD at about 82% of the New York figure for the same role and seniority, and the final round is usually held in the Singapore office.
The loop as candidates report it (compiled, not official)
Each round answers the question candidates in Singapore ask, then points at the round that follows it.
- Stage 1Screen
What happens in the screen at Susquehanna (SIG)?
Numerical and logic assessment. It is stage 1 of 3 in the Susquehanna (SIG) loop, and candidates who clear it move to the probability rounds.
Next step: Probability rounds - Stage 2Probability rounds
What happens in the probability rounds at Susquehanna (SIG)?
Game theory, expected value and betting scenarios. It is stage 2 of 3 in the Susquehanna (SIG) loop, and candidates who clear it move to the on-site.
Next step: On-site - Stage 3On-site
What happens in the on-site at Susquehanna (SIG)?
Poker-style decision exercises and trading games. It is stage 3 of 3 in the Susquehanna (SIG) loop and it is the final decision point.
Next step: rehearse the practice set
What a passed loop pays in Singapore
Benchmarks in SGD for the roles Susquehanna (SIG) hires here, across every seniority we publish.
Practice questions for the Singapore loop
Matched to the topics Susquehanna (SIG) draws on for the roles it hires here: probability, mental maths, market making, statistics, brainteaser, machine learning, algorithms, c++ and systems. Written originally for this platform.
Market makingHardTrading round
You are quoting a market and get lifted five times in a row on the offer, in full size, by the same counterparty. Nothing else in the market has moved. What do you do?
StatisticsHardResearch round
Your alpha shows a strong in-sample relationship with next-day returns, but the effect halves out of sample. Give three explanations that are not overfitting.
AlgorithmsHardEngineering round
You receive a stream of order-book updates and must report the maximum trade price in the last N events at every step. How?
C++ and systemsHardEngineering round
Your median tick-to-trade latency is fine but the 99.9th percentile is ten times worse. Name the likely causes.
Machine learningHardResearch round
A gradient-boosted model predicts next-hour returns with an out-of-sample R² of 0.004. Is that useful?
BrainteaserHardFirst round
One hundred prisoners each open 50 of 100 boxes searching for their own number; all must succeed or all fail. What strategy beats a vanishingly small success rate?
ProbabilityStandardFirst round
Two people independently pick a real number uniformly from [0, 1]. What is the probability the two numbers differ by more than 0.25?
ProbabilityStandardFirst round
A random walk starts at 0 and moves +1 or −1 with equal probability each step. What is the probability it reaches +3 before it reaches −5?
Mental mathsStandardFirst round
Estimate the square root of 4,600 to one decimal place in under ten seconds.
Mental mathsStandardTrading round
A contract pays 100 if an event happens and 0 otherwise. It trades at 37. You think the true probability is 41%. You can trade 500 contracts. What is your expected edge?
Market makingStandardTrading round
I roll two fair six-sided dice and pay you the product. Make me a market, two wide.
Market makingStandardTrading round
Make a market on the number of petrol stations in the United Kingdom.
StatisticsStandardResearch round
You backtest 200 signals and the best one has a Sharpe ratio of 2.4. Should you trade it?
StatisticsStandardFirst round
Two return series each have a correlation of 0.6 with a third. What is the tightest bound you can put on their correlation with each other?
AlgorithmsStandardEngineering round
Design a data structure that supports insert, delete and get-random-element, all in expected O(1).
AlgorithmsStandardEngineering round
How would you implement a limit order book supporting add, cancel and match, and what is the complexity of each?
C++ and systemsStandardEngineering round
Why might std::unordered_map be a poor choice on a latency-critical hot path?
C++ and systemsStandardEngineering round
Explain false sharing and how you would detect it in a multi-threaded market data handler.
Machine learningStandardResearch round
Why is k-fold cross-validation usually wrong for financial time series, and what do you use instead?
BrainteaserStandardFirst round
You have 25 horses and a track that races five at a time, with no timer. What is the minimum number of races to find the fastest three?
ProbabilityWarm-upPhone screen
You flip a fair coin three times. Given that at least one flip came up heads, what is the probability all three were heads?
Mental mathsWarm-upPhone screen
What is 17 × 23, without writing anything down?
Questions candidates in Singapore ask
How many interview stages does Susquehanna (SIG) in Singapore run?
3 published stages: screen, probability rounds, on-site. The sequence is the same for the Singapore desk as elsewhere, with the final round usually held locally.
What topics does the Susquehanna (SIG) quant interview test?
Mainly probability, mental maths, market making, statistics. Susquehanna (SIG) hires for 3 quant families, so the technical rounds are weighted to the role rather than to finance knowledge.
How hard is the Susquehanna (SIG) quant interview?
Hard by market standards. Our practice set for this loop runs to 23 questions, sorted with the hardest first, and the backgrounds that clear the bar are typically mathematics graduates and poker and games.
What does a quant role at Susquehanna (SIG) pay in Singapore?
Quant Researcher total compensation in Singapore benchmarks at S$253k – S$2.7m, with a median of S$522k in SGD. Susquehanna (SIG) sits around 108% of the market benchmark for the same role and seniority.
Does Susquehanna (SIG) hire quants in Singapore?
Yes. Singapore is one of 5 markets where Susquehanna (SIG) runs a desk, and it ranks 4 globally in our hiring index with demand concentrated in systematic trading, commodities, macro, quant research.
Are these real Susquehanna (SIG) interview questions?
No. Stage detail is compiled from public sources and candidate reports and labelled as such. Every question is written originally for this platform to rehearse the same reasoning, so nothing here republishes a firm's own question bank.
Who else hires quants in Singapore
Prepare once, interview across the local market.
Stage detail is compiled from public sources and candidate reports and is labelled as such. Questions are written originally for this platform. Pay figures are benchmarks by role, seniority and market, not an offer from Susquehanna (SIG).
Introductions
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Methodology
Figures are expressed as annual total compensation (base salary plus expected performance bonus) in the reference market's local currency, converted from a US dollar base. They describe typical market ranges rather than any individual offer, and exclude sign-on payments, deferred equity and carried interest. Portfolio-manager figures reflect formulaic profit-share arrangements and are therefore far more dispersed than any other role.
KnowQuantIndex 2026.1 · Updated September 2026
Modelled bands describe the market, not an individual offer. Where an employer states pay, the stated figure is used and labelled as such.
Singapore intelligence
Interview in Singapore knowing what the market pays
The loop, the reasoning it tests, and the local benchmark once you clear it.