Fundraising Fox

Colin McDonnell

Founder

Founder at Brick Health

Seattle, Washington, United States

FoundedBrick Health Β· YC

About

Colin McDonnell studied at MIT and works as an engineer. He is currently building medical infrastructure for virtual primary care.

LinkedIn β†—X / Twitter β†—
Latest on 𝕏

colinhacks @colinhacks

repo πŸ‘‡ https://t.co/INiTli6QzL

Aug 2, 2026 Β· β™₯ 31 Β· ⇄ 1

colinhacks @colinhacks

Been using Varlock to validate environment variables A unified .env.schema file to configure env loading+validation. So good. 🎯 specifies what .env files to load 🦺 defines var allowlist πŸ’Ž validates (url/port/regex/enum/etc) ◼️ auto-redacts secrets ⚑️ `varlock run -- <cmd>` https://t.co/wgFinFPssE

Aug 2, 2026 Β· β™₯ 379 Β· ⇄ 18

colinhacks @colinhacks

If you have 8 minutes and want to learn more about Nub, this video is the best way to do it! ✨ @BetterStackHQ absolutely knocked it out of the park. posted with permission https://t.co/toyZjXMnjI

Aug 1, 2026 Β· β™₯ 209 Β· ⇄ 11

Founder at Brick HealthYC W19

Intro paths

YC

Colin went through Y Combinator (Winter 2019) β€” any YC alum in your network can reach them through the YC community.

β†’

In turn, Colin can intro founders to Brick Health's investors below.

Brick Health's investors Β· 1

Y Combinator

Experience

  1. PullfrogFoundercurrent2025 β€” present
  2. ZodCreator and Maintainercurrent2020 β€” present
  3. Clerk.comOSS Fellow2024 β€” 2025
  4. BunDeveloper Relations2022 β€” 2023
  5. GelHead of Developer Relations2021 β€” 2022Cambridge, Massachusetts, United States
  6. Brick HealthFounder2020 β€” 2021San Francisco, California, United States
  7. Bagel HealthFounder2018 β€” 2020
  8. Matrix PartnersStudent Associate2014 β€” 2015
  9. Swift NavigationIntern2015
  10. National Bureau of Economic ResearchResearch Assistant2013Cambridge, MA
  11. MIT Research Lab of ElectronicsResearcher2011Cambridge, MA

Education

  1. Massachusetts Institute of TechnologyBachelor's Degree, Electrical Engineering and Computer Science2012 β€” 2016
  2. Lakenheath High School2008 β€” 2012

Skills & more

Python17Matlab6Embedded SystemsMathematicaStataArcGISJava14HTML3Django1Machine Learning1Power Electronics1Synthetic Biology
+6 moreFeedback Control SystemsMicrofluidicsMicrocontrollersParseResearchData Analysis

Languages Spanish

From Colin's professional profile.

Same school

Also attended Massachusetts Institute of Technology977

Fred WilsonCo-founder & Partner at Union Square VenturesAileen LeeFounder & Managing Partner of Cowboy VenturesHemant TanejaCEO & Managing Director of General CatalystBrad FeldCo-founder of Foundry and TechstarsMatt HuangCo-founder and Managing Partner at ParadigmDelian AsparouhovPartner at Founders Fund and co-founder of Varda

+ 971 more

Shared employers

Also worked at Matrix Partners9

Anoushka VaswaniPartner at Lightspeed Venture PartnersShirish SathayePartner at Cervin VenturesShilpa MaheshwariManaging Director, Investments at Aavishkaar Venture Management Services Private LimitedYan-David ErlichGeneral Partner at B Capital GroupTasneem DohadwalaManaging Partner at Golden SeedsHardi MeybaumGeneral Partner at Matrix

+ 3 more

Also worked at Swift Navigation4

Christopher J RustCo-Founder and Partner at Clear VenturesMichael StarkPartner and Founder at Crosslink CapitalGregory WertmanGeneral Partner at Griffin Gaming PartnersKen SobajimaVenture Partner at MS&AD Ventures

Also worked at National Bureau of Economic Research8

Timur AkazhanovGeneral Partner at B4 CapitalNancy SullivanCEO and Managing Director at Illinois VenturesTomas PhilipsonManaging Partner at MEDA VenturesBrandi CoatesGuild Member at Serac VenturesDr. Jeffrey BrownProfessor, Gies College of Business, University of Illinois Urbana-Champaign at Illinois VenturesAli RohdeCo-Founder and General Partner at Outset Capital

+ 2 more