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About
Joseph Tso is a computer science graduate from Princeton and co-founder of Haladir.
COO at HaladirYC W26
Intro paths
Joseph went through Y Combinator (Winter 2026) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Diana Hu, General Partner at Y Combinator — the partner who ran Haladir's batch and knows the company first-hand. YC profile ↗
In turn, Joseph can intro founders to Haladir's investors below.
Haladir's investors · 10
Co-founders at Haladir
Frequently asked questions
- Who is Joseph Tso?
- Joseph Tso is a computer science graduate from Princeton and co-founder of Haladir.
- Where does Joseph Tso work?
- Joseph Tso is COO of Haladir.
- What companies did Joseph Tso found?
- Joseph Tso founded Haladir.
Founder mafias
Y Combinator mafia10,594
Also came through, then founded or led a company.
Knot mafia3
Also came through, then founded or led a company.
About this profile. Compiled from public sources — Haladir'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