KnowQuant

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Writing on the quant market, the firms in it and the careers it pays for

Long form pieces, short answers and working notes for people inside quant firms, moving into them or hiring across them. Every number is attributed, every sample size is stated, and nothing here asks you to apply for anything.

Pieces
43
Topics
7
Reading
134 min
Most recent
26 Oct 2026

Latest · Employers · 6 min read

Citadel Careers: What to Expect and How to Apply

Citadel offers a diverse range of career paths across its core quant trading, investment management, and technology functions, with a significant presence in major financial hubs. Candidates should focus on demonstrating exceptional technical aptitude, problem-solving skills, and a clear understanding of the firm's demanding, performance-driven culture.

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  • What types of careers does Citadel offer?

    Citadel offers a broad array of career paths, encompassing core quantitative research and trading roles, alongside substantial opportunities in software engineering, machine learning, and data science, reflecting its technology-first approach to finance.

  • What is the culture like at Citadel?

    Citadel's culture is characterised by intense intellectual competition, a fast-paced work environment, and a strong emphasis on meritocracy and performance.

  • Where does Citadel hire?

    Citadel maintains a significant global presence, with primary offices in key financial centres that serve as hubs for its trading and technology operations.

Straight answers

The single question each piece was written to settle, answered in a paragraph. Read the answer, then read the working if you want it.

What is it like to pursue a career at Citadel?

A career at Citadel involves working within one of the largest and most technologically advanced quantitative trading and investment management firms globally, characterised by rigorous analytical demands, rapid decision-making, and significant investment in infrastructure. The firm hires across a wide spectrum of roles, from core quantitative research and trading to software engineering, machine learning, data science, and essential operational and compliance functions.

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What interview questions does Citadel ask across quant research, engineering and trading?

Citadel and Citadel Securities test candidates across distinct technical tracks, focusing on deep systems programming in C++ for engineers, rigorous probability and statistical inference for researchers, and expected value calculation under time pressure for traders. The process evaluates speed, clean communication under stress, and the ability to explain complex technical trade-offs without relying on memorised patterns.

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How does a Citadel salary work, and what can you expect to earn across roles?

A Citadel salary is split into a fixed base pay and a performance-linked discretionary bonus, with total compensation heavily weighted towards variable year-end allocations rather than base salary. Across both Citadel the multi-strategy hedge fund and Citadel Securities the market maker, first-year graduate packages rely on upfront sign-on bonuses, while experienced compensation depends directly on desk PnL, capital efficiency and individual mandate performance. Detailed benchmarks across titles can be explored using modelled estimates from the KnowQuant salary model at /salary.

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What are Jane Street careers really like, and how does hiring work across roles?

Jane Street careers span quantitative trading, software engineering, research, infrastructure, and core business functions across its main hubs in New York, London, Hong Kong, and Singapore. The firm operates as a collaborative proprietary trading firm and market maker, evaluating candidates on probability, decision-making under uncertainty, and functional programming rather than prior finance experience or aggressive commercial posturing.

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What is the typical salary for a quant analyst?

Quant analyst salaries vary significantly based on the firm type, specific role, and geographic location, making a single 'typical' figure misleading. Base salaries and total compensation packages, which include substantial bonuses, are generally highest at proprietary trading firms and market makers, followed by hedge funds, especially for front-office quantitative research and trading roles.

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What is a quant job, what roles are available, and where are these jobs typically found?

A quant job refers to a highly analytical and technical role within quantitative finance, applying mathematical models, statistical methods, and computational techniques to financial markets. These roles extend beyond traditional quant research to include software engineering, data science, machine learning, and trading, all supporting the core function of identifying and executing profitable strategies. The primary locations for these opportunities are major financial centres such as New York, London, Chicago, Amsterdam, Hong Kong, and Singapore.

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Everything published

InterviewsCitadel Interview Questions: What the Firm Actually Tests Across QR, Dev and TradingA breakdown of Citadel and Citadel Securities interview questions across quantitative research, software engineering, and trading, covering loop structures and preparation strategy.26 Oct 2026 · 6 min
CompensationCitadel salary structure: what quants, engineers and traders actually earnAn unvarnished breakdown of Citadel salary structures across quantitative research, trading, software engineering and infrastructure, covering base salaries, performance bonuses, non-competes and how Citadel differs from Citadel Securities.26 Oct 2026 · 5 min
CareersJane Street Careers: What the Firm Hires, How Desks Work, and How to PrepareA guide to Jane Street careers across trading, software engineering, research, and infrastructure, explaining the interview process, desk structures, and global offices.26 Oct 2026 · 6 min
CompensationQuant Analyst Salary: Know Your Value in Proprietary Trading and Hedge FundsUnderstanding quant analyst salaries requires distinguishing between roles at proprietary trading firms, market makers, and hedge funds, as well as considering geographical variations and the specific skillset required. Expect significant differences between front-office research and back-office support roles.26 Oct 2026 · 5 min
CareersQuant Jobs: What Roles Exist and Where to Find ThemQuant jobs encompass a range of highly specialised roles within quantitative trading firms, hedge funds, and market makers, extending beyond core quant research to include software engineering, data science, machine learning, trading, and operations. These positions are primarily concentrated in key financial hubs globally, with varied demand and specialisation across locations.26 Oct 2026 · 7 min
CareersQuantitative analyst jobs: how the seat splits across buy side and sell sideThe term quantitative analyst covers fundamentally different jobs depending on whether you sit in an investment bank, a market maker or a hedge fund. Here is how to target the right desk, pass the screen and assess the compensation structure.26 Oct 2026 · 6 min
CareersWhat does a Quantitative Developer do?Quantitative developers build and maintain the sophisticated software systems that power trading strategies, data analysis, and risk management within quantitative trading firms. Their work directly impacts trading performance and firm profitability, requiring strong programming skills and an understanding of financial markets and quantitative methods.26 Oct 2026 · 7 min
CareersWhat is Quantitative Finance and How Does it Apply to Trading Firms?Quantitative finance applies mathematical models and computational methods to financial markets, driving strategy and risk management at trading firms. It encompasses roles from research to engineering, all focused on data-driven decision-making.26 Oct 2026 · 7 min
CompensationQuantitative Finance Salary: What to Expect and How it VariesQuantitative finance salaries are highly competitive, driven by skill, firm type, and location. Compensation models are complex, often including a significant bonus component tied to performance. Understanding these variations is crucial for evaluating opportunities.26 Oct 2026 · 4 min
CareersWhat is Quantitative Research in Financial Trading Firms?Quantitative research in financial trading firms involves developing and testing mathematical models, algorithms, and data-driven strategies to identify trading opportunities and manage risk, moving beyond academic theory to practical, real-time application in fast-paced markets.26 Oct 2026 · 5 min
CareersQuantitative Trading: The Act and the RolesQuantitative trading involves using mathematical models and computational power to execute trading strategies across financial markets. It encompasses strategy development, data analysis, and high-performance execution, with specific roles like Quantitative Researchers, Quantitative Traders, and Quantitative Developers forming the core teams at firms in London, New York, and other major.26 Oct 2026 · 6 min
EmployersTwo Sigma Careers: What to Expect and How to ApplyTwo Sigma is a technology-driven investment manager and market maker, known for its deep integration of computer science, data science, and financial modelling. A career here typically involves advanced technical work in research, engineering, or trading, with a strong emphasis on quantitative methods and sophisticated systems.26 Oct 2026 · 6 min
CareersWhat a quant developer does, and a roadmap to become oneWhat quant developers actually build, how the role differs from researcher and software engineer, the skills firms test, and a step-by-step roadmap in.13 Oct 2026 · 1 min
CareersWhat is a quant? The job, the main types and how pay worksA plain-English explanation of what quants do, the main types of quant role, where they work and how their pay is structured.13 Oct 2026 · 1 min
MarketsWhere the US hedge fund and trading jobs are: a state-by-state guideA state-by-state map of US hedge fund and trading employment, with each market's strengths and search demand.8 Oct 2026 · 2 min
CareersFPGA engineer jobs at trading firms: what the work is and what it paysThe FPGA seat explained: the work, the skills firms test, where candidates come from, and where to read modelled pay and live vacancies.8 Oct 2026 · 1 min
CareersHedge fund jobs beyond quant: every seat these firms actually hireA map of the non-quant roles at hedge funds and trading firms, what each one does, who gets hired, and where to read the pay and live vacancies for each.8 Oct 2026 · 1 min
CareersHedge fund operations and fund accounting: the careers and the payWhat trading operations and fund accounting seats do, the skills that get people hired, how they progress, and where to read pay and live roles.8 Oct 2026 · 1 min
MarketsHedge funds in Boston: the asset management city's quant sideBoston's hedge fund and quant market: what sets it apart, the roles in demand and how candidates from local universities get in.8 Oct 2026 · 1 min
MarketsHedge funds in Greenwich and Connecticut: the original hedge fund corridorGreenwich, Stamford and the Connecticut hedge fund corridor: why firms are there, which roles they hire and the commute reality.8 Oct 2026 · 1 min
MarketsHedge funds in Miami: why firms moved and what roles followedMiami and South Florida's growing hedge fund market: the drivers, the firms, the roles, and what to check before relocating.8 Oct 2026 · 1 min
MarketsHedge funds in New York: who hires, which roles, and what it paysNew York's hedge fund and trading firm market: the employers, the non-quant seats, pay context and where to find live roles.8 Oct 2026 · 1 min
MarketsHedge funds in San Francisco and the Bay Area: the quant scene explainedThe San Francisco and Bay Area hedge fund market: what kinds of firms operate there, which roles they hire, and how pay compares with big tech.8 Oct 2026 · 1 min
MarketsHedge funds in Texas: Dallas, Houston and Austin explainedThe Texas hedge fund and trading market across Dallas, Houston and Austin: firm types, roles and what to expect.8 Oct 2026 · 1 min
CompensationSoftware engineer pay at Citadel, Jane Street and other quant firmsWhat drives software engineer pay at Citadel, Jane Street, Two Sigma and Hudson River Trading, how it is structured, and how to read the figures you find online.8 Oct 2026 · 1 min
MarketsSoftware engineer salary in Chicago: why trading firms set the top of the marketSoftware engineer pay in Chicago, how trading firms shape the top of the market, and how to compare offers with New York.8 Oct 2026 · 1 min
MarketsSoftware engineer salary in New York: trading firms versus techHow software engineer pay at New York trading firms compares with the wider NYC tech market, and what moves it.8 Oct 2026 · 1 min
MarketsTrading firms in Chicago: the US capital of proprietary tradingChicago's proprietary trading and market-making firms, the engineering-heavy roles they hire, and how pay compares with New York.8 Oct 2026 · 1 min
MarketsUnderstanding Quant Trading: A KnowQuant PerspectiveQuant trading uses mathematical models and computational power to execute trades, relying on data analysis and algorithmic decision-making rather than human intuition. It spans various strategies, from high-frequency trading to long-term quantitative investing, and is a core function across prop trading firms, market makers, and hedge funds.21 Sept 2026 · 5 min
CompensationQuantitative Analyst Salary: What to Expect in Quant FirmsQuantitative analyst salaries are modelled estimates from the KnowQuant salary model, reflecting demand for specialist skills in high-performance trading and investment firms. Compensation varies significantly by firm type, location, experience level, and the specific technical and quantitative skills required for the role.21 Sept 2026 · 3 min
SkillsThe skills quant employers are actually asking forA data-led read on the technologies and disciplines quant adverts name most often, and how the mix shifts by role and by city.6 Feb 2026 · 1 min
CareersGetting a quant job without a finance backgroundWhy the field recruits outside finance, what genuinely transfers from academia and other industries, and the gaps you need to close first.4 Feb 2026 · 1 min
CareersWhat a quant trader actually doesThe daily reality of a quant trading seat, how it differs from research, what firms screen for, and how the role is paid.2 Feb 2026 · 1 min
Market dataQuant hiring: how to read the market rather than the headlinesWhy most hiring commentary is noise, what a defensible measurement looks like, and how our hiring index is calculated.30 Jan 2026 · 1 min
CareersDo you need a PhD to be a quant?Where a doctorate is genuinely required, where it is a soft preference, and what substitutes for it when you do not have one.26 Jan 2026 · 1 min
MarketsLondon vs New York for quant jobsVacancy volume, employer mix, pay and mobility compared across the two largest quant hubs, using our live vacancy dataset.23 Jan 2026 · 1 min
InterviewsQuant interview preparation: what firms really testThe question families that appear again and again, how they differ by seat, and a preparation plan that does not waste months on the wrong material.19 Jan 2026 · 1 min
CareersQuant developer vs quant researcher: which seat suits youThe day-to-day difference between the two most-confused quant seats, how they are interviewed, how they are paid, and how people move between them.16 Jan 2026 · 1 min
CareersHow to become a quant: the route people actually takeThe degrees, skills and first jobs that lead into quant research, quant trading and quant development, with what our live vacancy data says employers actually ask for.12 Jan 2026 · 2 min
EmployersHedge fund, prop trading firm or market maker: how the employer types really differCapital source, market activity, holding period, team organisation, engineering function and pay mechanism treated as six separate axes, with named firms as worked examples and the questions to ask in a process.Undated · 7 min
SkillsPython or C++ in quant finance: choose by the system you want to buildWhat actually determines whether a system is fast, where each language earns its place, a worked design example from research to a narrow native component, and a small runnable example with a correctness suite we ran ourselves.Undated · 8 min
CompensationQuant pay: how to read an offer and compare two of themThe components an offer is built from, why a headline first-year number is not recurring pay, and a worked two-offer comparison with a checklist you can take into the conversation.Undated · 8 min

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Written against primary sources and dated. Useful without applying for anything.

How this writing is put together

Each piece states what it counted, over what period, and what it could not see. Claims are either attributed to the organisation that published them or counted from the vacancies we track, and each is labelled as one or the other. Where the evidence is thin, the piece says so rather than filling the gap.

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