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About
Joshua Ibrahim holds a PhD in Applied Mathematics from Caltech and previously interned as a software engineer at Facebook on Messenger and Instagram systems. He also earned MS and BS degrees in Electrical and Systems Engineering from Penn.
CTO at ManifoldYC S26
Intro paths
Joshua went through Y Combinator (Summer 2026) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Jon Xu, General Partner at Y Combinator — the partner who ran Manifold's batch and knows the company first-hand. YC profile ↗
In turn, Joshua can intro founders to Manifold's investors below.
Manifold's investors · 7
Co-founders at Manifold
Frequently asked questions
- Who is Joshua Ibrahim?
- Joshua Ibrahim holds a PhD in Applied Mathematics from Caltech and previously interned as a software engineer at Facebook on Messenger and Instagram systems. He also earned MS and BS degrees in Electrical and Systems Engineering from Penn.
- Where does Joshua Ibrahim work?
- Joshua Ibrahim is CTO of Manifold.
- What companies did Joshua Ibrahim found?
- Joshua Ibrahim founded Manifold.
Founder mafias
Y Combinator mafia10,594
Also came through, then founded or led a company.
Goldman Sachs mafia651
Also came through, then founded or led a company.
Carnegie Mellon University mafia562
Also came through, then founded or led a company.
Goldman Sachs mafia436
Also came through, then founded or led a company.
Caltech mafia192
Also came through, then founded or led a company.
About this profile. Compiled from public sources — Manifold's own website and public professional profiles — and summarised by Fundraising Fox; every fact is kept with where it came from. Spotted an error, or would rather not be listed? Email privacy@fundraisingfox.com · How we build profiles · Your rights