Interact with the workbook to discover more about me.
My life, as a spreadsheet.
Every cell opens its own page on the right. Arrow keys move, Ctrl+` shows the formulas, Ctrl+K searches everything.
| A | B | C | D | |
|---|---|---|---|---|
| 1 | Joaquim Manji-Jung | |||
| 2 | 18 · Founder of Aptence and QuantAcademy · Economics at Paris 1 Panthéon-Sorbonne | |||
| 3 | ||||
| 4 | Value | Detail | Trend | |
| 5 | Building now | Aptence | AI assessments for finance hiring | open → |
| 6 | Built first | QuantAcademy | finance education SaaS, built solo | open → |
| 7 | Users | 0K | no funding, no paid ads | open → |
| 8 | Interview questions | 0 | every one explained | open → |
| 9 | Finance jobs tracked | 0+ | read daily from firms' own sites | open → |
| 10 | URLs in the sitemap | 0+ | 12 languages | open → |
| 11 | Organic views | 0M+ | 11.1K followers | open → |
| 12 | Age | 0 | born 9 July 2008 | open → |
| 13 | Languages | 0 | French · English · Japanese | open → |
| 14 | Golf handicap | ≈0 | former Alsace Junior Champion | open → |
| 15 | First paid client | Age 13 | ≈€250, 2021 | open → |
| 16 | YC in London | 0 Oct 2026 | invited by Managing Partner Diana Hu | open → |
| 17 | Applying to | YC · a16z speedrun | with Aptence | open → |
| 18 | ||||
| 19 | Next | San Francisco | The Academy | open → |
| 20 | ||||
| 21 |
Hi, I'm Joaquim.
I'm 18, and I study economics on the English-taught International Track at Paris 1 Panthéon-Sorbonne, with a minor in computer science. Most of my time goes into two companies: QuantAcademy, which I built and launched alone, and Aptence, which I'm building now.
I grew up in Alsace. At 13 I taught myself web development and built my first paid website for a business client, for about €250. I'm French, Canadian and Moroccan, I speak French, English and some Japanese, and I play golf: I was Alsace Junior Champion and got down to a handicap of 4.
What I care about is how people learn finance, and how you can tell whether they really have. A CV can't show you whether someone can build a model. A spreadsheet can, which is why this page is one.
Aptence · now
Banks and funds still screen analysts with CVs and Excel take-homes graded by hand. Aptence is an AI-powered HackerRank for finance: candidates build a real model in a browser spreadsheet that behaves like Excel, the server recalculates it on scenarios they never saw, and recruiters get scores they can compare.
It's my first B2B company, and it's teaching me what QuantAcademy couldn't: customer discovery, founder-led sales and selling to institutions.
| A | B | C | D | |
|---|---|---|---|---|
| 1 | USD m | 2025A | 2026E | 2027E |
| 2 | Period | 0 | 1 | 2 |
| 3 | Revenue growth | 8.0% | 7.5% | |
| 4 | Revenue | 1,240.0 | 1,339.2 | 1,439.6 |
| 5 | EBITDA margin | 21.5% | 22.0% | 22.5% |
| 6 | EBITDA | 266.6 | 294.6 | 323.9 |
| 7 | D&A | (49.6) | (53.6) | (57.6) |
| 8 | EBIT | 217.0 | 241.1 | 266.3 |
| 9 | Taxes on EBIT | (54.3) | (60.3) | (66.6) |
| 10 | Capex | (62.0) | (67.0) | (72.0) |
| 11 | Change in NWC | (9.9) | (10.0) | |
| 12 | Unlevered FCF | |||
| 13 | Discount factor | |||
| 14 | PV of FCF | |||
| 15 | ||||
| 16 | Sum of PV | |||
| 17 | WACC | 9.0% |
Aptence, playing live: a candidate finishes a DCF, a paste from outside is blocked, the server grades the model.
QuantAcademy · since 4 August 2026
I started QuantAcademy in high school and launched it on 4 August 2026: 5,571 interview questions across ten careers, 50 modules and 1,000+ lessons, 37 modeling projects graded cell by cell, 13 deal case studies, an AI interview simulator and a Career Hub tracking more than 40,000 finance jobs.
It has reached 5K users and its first paying customers, with no external funding and no paid advertising. Distribution came from programmatic SEO in twelve languages and from the content I post every day: 11.1K followers and 18M+ views.
YC in London · 13 October 2026 · next
I was invited by Managing Partner Diana Hu to Y Combinator's founder event in London, where I heard her, Gustaf Alströmer and the founders of Model ML and Solve Intelligence. With Aptence, I'm now applying to YC's next batch and to a16z speedrun.
Elsewhere
Council of Europe national competition: first in qualification, sixth of 300+ in the final. Baccalaureate with honours (15.12/20, 17.5/20 final-year average, 18/20 in mathematics). Online courses from Yale (Financial Markets, with Honors), Duke (Behavioral Finance, with Honors), Columbia, Wharton, Stanford and Bocconi.
Contact
The best way to reach me is Joaquim.Manji-Jung@etu.univ-paris1.fr. I'm also on LinkedIn.