Where does Moncef Djafri work?

Moncef Djafri is Founder of Stockline.

What companies did Moncef Djafri found?

Moncef Djafri founded Stockline.

Where did Moncef Djafri go to school?

Moncef Djafri studied at Stanford University; Y Combinator; École Polytechnique (Applied Mathematics and CS).

Moncef Djafri

Founder

Founder at Stockline

Paris, Île-de-France, France

FoundedStockline · YC

Find your path to Moncef

829 people in our graph share verified history with Moncef — schools, employers, funds. One of them is your warm intro.

Paul KwanunlockedMoncef: together at Stanford University (2026)

×11Moncef: together at Y Combinator

About

Moncef Djafri attended Polytechnique and later studied at Stanford. He is building Stockline.

Founder at Stockline YC S25

Intro paths

Moncef went through Y Combinator (Summer 2025) — any YC alum in your network can reach them through the YC community.

Their group partner at YC was Brad Flora, Backing expeditions into the future — the partner who ran Stockline's batch and knows the company first-hand. YC profile ↗

→

In turn, Moncef can intro founders to Stockline's investors below.

Stockline's investors · 4

Kima VenturesParis · $50K – $5M checks Sterling RoadSan Francisco · $50K – $150K checks Transpose Platform ManagementHouston Y CombinatorSan Francisco · $500K checks · since 2025

Co-founders at Stockline

Mariem Ould IsmailFounder

Experience

Stockline (YC S25)Co-Foundercurrent2025 — present
New York UniversityResearch Intern2025
Boston Consulting Group (BCG)Visiting Associate2024
Lycée HocheTeacher Assistant2023 — 2024
Armée de TerreDeputy Platoon Leader2022 — 2023

Skills & more

Languages Anglais · Arabe · Espagnol · Français · Portugais

From Moncef's professional profile.

Frequently asked questions

Who is Moncef Djafri?: Moncef Djafri attended Polytechnique and later studied at Stanford. He is building Stockline.
Where does Moncef Djafri work?: Moncef Djafri is Founder of Stockline.
What companies did Moncef Djafri found?: Moncef Djafri founded Stockline.
Where did Moncef Djafri go to school?: Moncef Djafri studied at Stanford University; Y Combinator; École Polytechnique (Applied Mathematics and CS).

Founder mafias

Y Combinator mafia10,230

Also came through, then founded or led a company.

Sam AltmanPresidentFounded Tools for Humanity +3 Garry TanPresident & CEOFounded Y Combinator +1 Jessica LivingstonCo-founderFounded Y Combinator Alexis OhanianPartnerFounded Reddit Fred EhrsamYC Summer 2012Founded Nudge +1 Matt HuangYC Winter 2011Founded Paradigm +1

+ 10,223 more

Stanford University mafia1,934

Also came through, then founded or led a company.

Peter ThielB.A.Founded PayPal Reid HoffmanB.S.Founded LinkedIn +2 David SacksB.A.Founded Yammer Keith RaboisB.A.Founded Opendoor Garry TanBSFounded Y Combinator +1 Joe LonsdaleBSFounded Opto +5

+ 1,927 more

École Polytechnique mafia136

Also came through, then founded or led a company.

Arthur MenschMaster of ScienceFounded Mistral AI Guillaume LampleMaster's degreeFounded Mistral AI Thomas WolfFounded Hugging Face Rodolphe ArdantPhysicsFounded Spendesk Matt RouifB.SFounded Photoroom +3 Anne OsdoitMaster of Science (MS)Founded Moon Surgical +2

+ 129 more

Lycée Hoche mafia14

Also came through, then founded or led a company.

Frédéric CaronFounded HomeKuant Nadir TitaFounded Hero Franck Le OuayFounded Lifen Hugues Pouillot2009Founded Dashblock Martin GouyStudent in preparatory classes in MPSI then MPFounded Artifact Claire GouzeClasse préparatoire ECSFounded nao Labs

+ 7 more

Same school

Also attended Stanford University2,000

Peter ThielCo-founder & Partner at Founders Fund David SacksCo-founder & General Partner at Craft Ventures; former White House AI & Crypto Czar Garry TanPresident & CEO of Y Combinator Alfred LinPartner at Sequoia Capital Jim BreyerFounder & CEO of Breyer Capital Mike Maples JrCo-founding Partner at Floodgate

+ 1,994 more

Also attended Y Combinator2,000

Tarek MansourCo-founder & CEO of Kalshi Suhail DoshiFounder of Mixpanel; founder of Particle Subomi OluwalanaCo-founder & CEO of Convoy Arhaan A.Deeptech Fellow at Clear Ventures Collin WallaceGeneral Partner at Lobby Capital Victor SantosVictor Scout at One Way Ventures

+ 1,994 more

Also attended École Polytechnique280

Arthur MenschCo-founder & CEO of Mistral AI Guillaume LampleCo-founder & Chief Scientist of Mistral AI Thomas WolfCo-founder & Chief Science Officer of Hugging Face Rodolphe ArdantFounder & President of Spendesk Cyriac ParisotInvestor at Index Ventures Michal NatoraSenior Investment Director - Industrial IT & Robotics at Emerald Technology Ventures Ag

+ 274 more

Also attended Lycée Hoche38

Julia NajmanSenior Associate at Partech Ventures Cyprien BenoistInvestor at Headline Victor ChamfeuilAssociate at Axeleo Capital Guillaume DebackPartner at SGH Capital Victor DraultPartner at Breega Marius ThebaultAssociate at Circular Innovation Fund

+ 32 more

Shared employers

Also worked at Stockline (YC S25)1

Mariem Ould IsmailFounder at Stockline

Also worked at New York University184

Ankita TiwariPrograms Manager at StartX Uri LopatinInvestor at Khosla Ventures Doug BandVenture Partner at AlleyCorp Nour ObeidallahHead of Community at AlleyCorp Anisha MustiInvestor at Dorm Room Anne DordaiHead of Portfolio and Platform at Wavemaker Three-Sixty Health

+ 178 more

Also worked at Boston Consulting Group (BCG)1,469

Cristina JunqueiraCo-founder of Nubank Massimo PrelzInvestor at DN Capital Rasmus AreskougInvestor at DN Capital Riccardo MontiOperating Advisor at P101 Ventures Antonio TurroniOperating Advisor at P101 Ventures Luca RossettoOperating Advisor at P101 Ventures

+ 1,463 more

Also worked at Lycée Hoche2

Arthur MenschCo-founder & CEO of Mistral AI Noé RobertInvestor at 360 Capital

Find your path to Moncef

About

Founder at StocklineYC S25

Intro paths

Stockline's investors · 4

Co-founders at Stockline

Experience

Skills & more

Frequently asked questions

Founder mafias

Y Combinator mafia10,230

Stanford University mafia1,934

École Polytechnique mafia136

Lycée Hoche mafia14

Same school

Also attended Stanford University2,000

Also attended Y Combinator2,000

Also attended École Polytechnique280

Also attended Lycée Hoche38

Shared employers

Also worked at Stockline (YC S25)1

Also worked at New York University184

Also worked at Boston Consulting Group (BCG)1,469

Also worked at Lycée Hoche2

Founder at Stockline YC S25