Sebastian Crossa
FounderCo-Founder at LLM Stats
New York, New York, United States
FoundedLLM Stats · YC
About
Sebastian Crossa is a founding engineer who has worked at Micro, an email infrastructure company backed by a16z, and Atrato Pago (W21), a fintech startup. He co-founded LLM Stats.
seb @sebcrossa
rewind was one of my fav mac apps back in the day. pumped to try coast! https://t.co/sDlDxyS0Qc
Jul 28, 2026 · ♥ 21 · ⇄ 1
seb @sebcrossa
hear me out: corgi cafe but as a bar with a dj playing melodic house in the background, low hanging warm light lamps and $20 daytona margaritas corgi bar https://t.co/iwwH028onk
Jul 24, 2026 · ♥ 12
seb @sebcrossa
one of the few teams doing it right is @microHQ imo, where email was built as a system of record to automate work, rather than email becoming the work. obv biased since i wrote the first loc
Jul 23, 2026 · ♥ 6
Co-Founder at LLM StatsYC S25
Intro paths
Sebastian 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 Jon Xu, General Partner at Y Combinator — the partner who ran LLM Stats's batch and knows the company first-hand. YC profile ↗
In turn, Sebastian can intro founders to LLM Stats's investors below.
LLM Stats's investors · 1
Co-founders at LLM Stats
Experience
- ZeroEvalCo-Foundercurrent2025 — presentNew York City Metropolitan Area
- LLM StatsCo-Foundercurrent2025 — presentNew York City Metropolitan Area
- Micro HQFounding Engineer2023 — 2025New York, United States
- Launch HouseSoftware Engineer2021 — 2023
- Major League HackingOpen Source Fellow2020
- Atrato (YC W21)Software Engineer2019Guadalajara, Mexico Metropolitan Area
Education
- Tecnológico de MonterreyComputer Science, Computer Science2018 — 2023
- Tecnológico de MonterreyHigh School/Secondary Diplomas and Certificates2015 — 2018
Skills & more
+12 more
iOS DevelopmentUiUser Experience (UX)Front-end DevelopmentPythonSwiftMicrosoft ExcelGithubDesign ThinkingTeamworkXcodeFinal Cut ProLanguages English · Spanish
From Sebastian's professional profile.
Same school
Also attended Tecnológico de Monterrey115
+ 109 more
Shared employers
Also worked at Micro HQ1
Also worked at Launch House7
+ 1 more
