About
Toni Lopez previously worked at IBM Research and founded Stack AI (part of Y Combinator's Winter 2023 cohort). He is currently building Karumi.
Toni Lopez @tonilopezmr
✅ putting your phone down when eating dinner with someone ✅ smiling at people on the street ✅ holding the door for people behind you ✅ buying ur friend flowers regularly (f** I dn't h gf) ✅ tipping service workers ✅ thinking about someone and immediately texting https://t.co/mUNe7xIHGu
Jul 30, 2026 · ♥ 1 · ⇄ 1
Toni Lopez @tonilopezmr
Take a guess: what % of Karumi's top 20 accounts are based in Spain? https://t.co/jsypj6P2S9
Jul 30, 2026
Toni Lopez @tonilopezmr
Este hilo es demasiado bueno: guardadlo y releedlo cada 2 semanas. https://t.co/2xJvdMpL0R
Jul 30, 2026 · ♥ 5 · ⇄ 1
Founder at KarumiYC F25
Intro paths
Toni went through Y Combinator (Fall 2025) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Nicolas Dessaigne, General Partner at Y Combinator — the partner who ran Karumi's batch and knows the company first-hand. YC profile ↗
In turn, Toni can intro founders to Karumi's investors below.
Karumi's investors · 2
Co-founders at Karumi
Experience
- Karumi (YC F25)Co-Foundercurrent2025 — presentSan Francisco, California, United States
- StackAIFounding Engineer2024 — 2025San Francisco y alrededores
- Cactus AICo-Founder2023 — 2024San Francisco Bay Area
- Seaplane IOFounding Dev Experience Engineer2021 — 2023Mountain View, California, United States
- Sparta CommoditiesFounding Engineer - Technical Lead2020 — 2021Geneva, Switzerland
- IBMSenior Applied AI Engineer2018 — 2020Nueva York, Estados Unidos
- PleasoundFounding Engineer2016 — 2018London, United Kingdom
- COME - Reinventing your mealsCTO and Co-founder2014 — 2016Valencia, Spain
- MeetizerAndroid Software Engineer2013 — 2014Valencia, España
- DIGIO Soluciones DigitalesJunior Sofware Developer2012 — 2013
Education
- Universitat Politècnica de València (UPV)Computer Science2014 — 2017
- IES Ginés Pérez ChirinosSenior technician Multiplatform Application Development, Software Engineering2012 — 2014
Skills & more
+12 more
Dependency InjectionContinuous IntegrationElectronicsBack-End Web DevelopmentWeb DevelopmentEngineering ManagementTeam LeadershipRust (Programming Language)iOSAndroidSpring BootReact.jsLanguages Español · Ingles
- DAY[EMPRENDE] — Universitat Politècnica de València (UPV)
- Student tutor program certification — Universitat Politècnica de València (UPV)
From Toni's professional profile.
Same school
Also attended Universitat Politècnica de València (UPV)19
+ 13 more
