Quant math that finally clicks.
91 lessons in the order you need them, 333 real interview problems with hints and full solutions, and the Dummy R videos that animate the hard parts.
Every lesson and every problem is free. An account takes 30 seconds, no card.
Nine tracks, in prerequisite order
Each track builds on the ones before it, from calculus to Black-Scholes. Algorithms and brainteasers need no prerequisites, so you can start them any time.
- 14 lessonsCalculusNo prerequisites
- 11 lessonsLinear AlgebraBuilds on Calculus
- 14 lessonsProbabilityBuilds on Calculus
- 9 lessonsStatistics & RegressionBuilds on Linear Algebra and Probability
- 10 lessonsDiscrete Stochastic ProcessesBuilds on Probability
- 11 lessonsStochastic CalculusBuilds on Discrete Stochastic Processes
- 12 lessonsFinance & OptionsBuilds on Stochastic Calculus
- 6 lessonsAlgorithms & ProgrammingNo prerequisites
- 4 lessonsBrainteasers & LogicNo prerequisites
Try one
A problem from the bank, the way it appears in the app. Work it out before you open the hint.
Two random breaks... so it’s a coin flip? One half?
Probability, medium
Stick broken at two points
A unit stick is broken at two uniformly chosen points. What is the probability the three pieces form a triangle?
The videos
Each one has a page with its takeaways, the lesson it belongs to, and problems to try next.
Free to learn, Pro to go deep
Every lesson and every problem is free. Pro removes the daily solution limit and unlocks the advanced tiers as they land, up to guided research-paper walkthroughs.
Free
$0
- All 91 lessons, from limits to Black-Scholes, with the videos
- Full 333-problem interview bank with hints
- 3 full solution reveals per day
- Checkpoint quizzes and progress tracking, synced across devices
Pro
$29a month, founding price
- Unlimited solution reveals
- Everything in Free
- Interview sets: problems worked the way an interviewer thinks, with traps and follow-ups
- Guided walkthroughs of real quant research papers(in progress)
- Frontier projects: replicate results and build your own extensions(in progress)
- New tracks and problem sets as they ship
Interview tomorrow? Unlock every solution for 24 hours or 7 days, with no subscription.
Day pass $3, week pass $9, with a free account.The traditional route, an MFE, costs $100,000+ and 1–2 years. If you're already working or have a STEM degree, Quant Engine gives you the same skill stack without the six-figure commitment.
Questions
Will this help me pass quant interviews?
Yes. The curriculum is reverse-engineered from actual interview questions at top firms. Lessons teach the concepts that appear in phone screens and onsites, and the problem bank drills the same patterns interviewers test for.
Do I need a math PhD to get hired?
No. Some research roles prefer PhDs, but most quant positions, especially quant dev and trader roles, hire candidates with strong fundamentals and problem-solving ability. Firms care more about whether you can solve their problems than about your degrees.
Where should I start?
Calculus is the entry point with no prerequisites. If your calculus is solid, jump into Probability, then work the problem bank by difficulty. The dependency graph on each track tells you exactly what to learn first.
What do I get for free?
With a free account (no card): all 91 lessons, from limits to Black-Scholes, with their checkpoints; the full 333-problem bank with hints; 3 full solutions a day; the mental-math sprint and the sampler interview sets; and progress saved across devices. Without an account you can read the start of every lesson and every problem. Pro ($29/mo) adds unlimited solutions, every interview set, timed sets and the mock interviews.