About
Founder and product lead at Callbook AI, previously CTO there and Chief Product Officer at Treble (YC S19). Has spent over five years leading B2B products.
Founder & Product at Callbook AIYC S26
Intro paths
YC
Daniel went through Y Combinator (Summer 2026) — any YC alum in your network can reach them through the YC community.
GP
Their group partner at YC was Jon Xu, General Partner at Y Combinator — the partner who ran Callbook AI's batch and knows the company first-hand. YC profile ↗
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In turn, Daniel can intro founders to Callbook AI's investors below.
Callbook AI's investors · 1
Co-founders at Callbook AI
DA
Diego AvellanedaFounder
Experience
- Hilstart (YC S26)Founder & CTOcurrent2026 — presentSan Francisco Bay Area
- AquilaFirmware Engineer2025 — 2026Sydney, NSW
- AquilaFirmware Engineer Intern2024Auckland, New Zealand
- The University of Auckland Formula SAE TeamElectrical Team Member2021 — 2024Auckland, New Zealand
- The University of Auckland Formula SAE TeamElectrical High Voltage Design Lead2022 — 2023Auckland, New Zealand
- HalterElectrical Engineering Intern2023 — 2024Auckland, New Zealand
Skills & more
Embedded SystemsProject PlanningCommunicationAltium Designer
From Daniel's professional profile.
Frequently asked questions
- Who is Daniel Martinez?
- Founder and product lead at Callbook AI, previously CTO there and Chief Product Officer at Treble (YC S19). Has spent over five years leading B2B products.
- Where does Daniel Martinez work?
- Daniel Martinez is Founder & Product of Callbook AI.
- What companies did Daniel Martinez found?
- Daniel Martinez founded Callbook AI.
- Where did Daniel Martinez go to school?
- Daniel Martinez studied at University of Auckland (Bachelor of Engineering - BE, Computer Systems Engineering).
Same school
Shared employers
Also worked at Hilstart (YC S26)4
Also worked at Aquila2
Also worked at The University of Auckland Formula SAE Team4
Also worked at Halter16
Spencer PunterPartner and COO at DCVC (Data Collective)Christina FaPrincipal at NewView CapitalSunil NagarajFounder and Managing Partner at Ubiquity VenturesTess HatchManaging Director at Stifel Venture BankingMatthew McGrathSenior Director of Investments at Alberta Enterprise CorporationConnor WiltshireData Analyst at Blackbird Foundry
+ 10 more