About
Dan Barrett is a software engineer with 12 years of experience, including 5 years of work in agent development, and has founded two companies.
Founder at OpenProseYC X26
Intro paths
YC
Dan went through Y Combinator (Spring 2026) β any YC alum in your network can reach them through the YC community.
GP
Their group partner at YC was Pete Koomen, General Partner at Y Combinator β the partner who ran OpenProse's batch and knows the company first-hand. YC profile β
β
In turn, Dan can intro founders to OpenProse's investors below.
OpenProse's investors Β· 1
Co-founders at OpenProse
DB
Experience
- OpenProseFounder & CEOcurrent2025 β presentBoston, Massachusetts, United States
- Smashing AppCofounder & CTO2021 β 2025
- Architect.ioSenior Software Engineer2019 β 2022Boston, Massachusetts, United States
- Madaket HealthSoftware Architect2016 β 2019Cambridge, Massachusetts, United States
- SS&C EzeSoftware Engineer2013 β 2016Boston, Massachusetts, United States
Skills & more
FIX Trading1Software DevelopmentMaking LLMs Do Interesting Things1Jack of All Trades1Learning1Software Project Management
From Dan's professional profile.
Frequently asked questions
- Who is Dan Barrett?
- Dan Barrett is a software engineer with 12 years of experience, including 5 years of work in agent development, and has founded two companies.
- Where does Dan Barrett work?
- Dan Barrett is Founder of OpenProse.
- What companies did Dan Barrett found?
- Dan Barrett founded OpenProse.
- Where did Dan Barrett go to school?
- Dan Barrett studied at College of the Holy Cross (Bachelor of Arts - BA, Physics).
Founder mafias
Y Combinator mafia8,773
Also came through, then founded or led a company.
Sam AltmanPresidentFounded Tools for Humanity +3Jessica LivingstonCo-founderFounded Y CombinatorAlexis OhanianYC Summer 2005Founded RedditFred EhrsamYC Summer 2012Founded Nudge +1Matt HuangYC Winter 2011Founded HotspotsTrae StephensYC Winter 2022Founded Pursuit +1
+ 8,766 more
College of the Holy Cross mafia2
Also came through, then founded or led a company.
Same school
Also attended College of the Holy Cross37
Nick WashburnSenior Managing Director, Intel Capital (North America)Liz FoxProduct Marketing and Communications at In-Q-TelKevin EganInvestor at IVP (Institutional Venture Partners)John DelfinoPartner, General Counsel at TCVAdriana RocheHead of Talent at Uncork CapitalJim KeyesSenior Advisor at C5 Capital
+ 31 more
