Find your path to Brecht
601 people in our graph share verified history with Brecht — schools, employers, funds. One of them is your warm intro.
Erica VanunlockedBrecht: together at Stealth Startup (2026)
×7Brecht: together at Stealth Startup
×3Brecht: together at SpaceX
Brecht: together at NASA Jet Propulsion Laboratory
About
Brecht Pierreux worked as an engineer at SpaceX and NASA's Jet Propulsion Laboratory before founding Macadamia, which develops AI tools for technical problem-solving.
Founder at MacadamiaYC W25
Intro paths
YC
Brecht went through Y Combinator (Winter 2025) — any YC alum in your network can reach them through the YC community.
GP
Their group partner at YC was Aaron Epstein, General Partner at Y Combinator — the partner who ran Macadamia's batch and knows the company first-hand. YC profile ↗
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In turn, Brecht can intro founders to Macadamia's investors below.
Macadamia's investors · 1
Co-founders at Macadamia
AV
Abel Van SteenweghenFounder, CEO
Experience
- Stealth StartupFoundercurrent2026 — present
- Macadamia (YC W25)Co-Founder & CTO2025 — 2026San Francisco, CA
- SpaceXStarlink Engineer I2024Austin, Texas, United States
- NASA Jet Propulsion LaboratoryVisiting Researcher2023 — 2024Pasadena, California, United States
- Airbus Defence and SpaceAerospace Engineer2022 — 2023Ottobrunn, Bavaria, Germany
Skills & more
LaTeX
Languages Dutch · English · French · German
From Brecht's professional profile.
Frequently asked questions
- Who is Brecht Pierreux?
- Brecht Pierreux worked as an engineer at SpaceX and NASA's Jet Propulsion Laboratory before founding Macadamia, which develops AI tools for technical problem-solving.
- Where does Brecht Pierreux work?
- Brecht Pierreux is Founder of Macadamia.
- What companies did Brecht Pierreux found?
- Brecht Pierreux founded Macadamia.
- Where did Brecht Pierreux go to school?
- Brecht Pierreux studied at Caltech (Master's thesis, Space Engineering); ETH Zürich (Master's degree, Mechanical Engineering); Delft University of Technology (Bachelor's degree, Aerospace Engineering).
Founder mafias
Y Combinator mafia10,230
Also came through, then founded or led a company.
Sam AltmanPresidentFounded Tools for Humanity +3Garry TanPresident & CEOFounded Y Combinator +1Jessica LivingstonCo-founderFounded Y CombinatorAlexis OhanianPartnerFounded RedditFred EhrsamYC Summer 2012Founded Nudge +1Matt HuangYC Winter 2011Founded Paradigm +1
+ 10,223 more
ETH Zürich mafia196
Also came through, then founded or led a company.
Thomas DübendorferPhDFounded Spontacts +2Veronica Gambillara FonckEngineerFounded LimmaTech Biologics +1Dr. Hanspeter FässlerHonorary Councillor Award (Ehrenrat)Founded Gravis Robotics +1Stephen LakeVisiting ScholarFounded Jetson Home +1Maximilian MarquartDoktor (Ph.D.)Founded CHOVIVA +1Nikolay KobyshevDoctor of Science (Dr. sc.)Founded Assaia +1
+ 189 more
Caltech mafia153
Also came through, then founded or led a company.
Dario AmodeiProgress towards BSFounded AnthropicFei-Fei LiDoctor of Philosophy - PhDFounded World LabsBill GrossBachelor of Science (B.S.)Founded X1 +5Chris VoigtPhDFounded Asimov +2Gil ElbazBSFounded TenOneTen Ventures +1Aditya RajagopalBachelor of Science (BS)Founded Esperto Medical +1
+ 146 more
Delft University of Technology mafia95
Also came through, then founded or led a company.
Eric MigicovskyIndustrial Design EngineeringFounded Beeper +1Menno GravemakerElectrical EngineeringFounded Momo Medical Group +1Kayra BahadirBachelor of Science - BScFounded Prestige +1Louis MonsignyBachelor of ScienceFounded Syntetica +1Sebastian ThrunHonorary DoctorateFounded Cresta +1Tom HubregtsenMaster’s DegreeFounded Voltrac +1
+ 88 more
Same school
Also attended Caltech275
Shaun MaguirePartner at Sequoia CapitalDario AmodeiCo-founder & CEO of AnthropicFei-Fei LiCo-founder & CEO of World Labs; Sequoia Professor of Computer Science at StanfordScott BillerInvestor at GV (Google Ventures)Seth LieblichInvestment Team at 8VCSusannah BarbeeVice President, Translational Immunology at Deerfield Management Company
+ 269 more
Also attended ETH Zürich381
Bastian HasslingerInvestor at Index VenturesCat WuInvestor at Index VenturesSteve VassalloInvestor at Foundation CapitalHelge DaebelPartner, Head of Water at Emerald Technology Ventures AgMaurin DaiInvestment Manager, Physical AI & Robotics at Emerald Technology Ventures AgChristoph FreiPartner, Head of Energy at Emerald Technology Ventures Ag
+ 375 more
Also attended Delft University of Technology286
Michiel KottingPartner at NorthzoneGiuseppe LacerenzaPartner at Keen Venture PartnersAlexander WortmannPartner at TCVThijs SchaapInvestment manager at NoaberHugo SilvaPartner at Pi LabsRobInvestor at henQ vc
+ 280 more
Shared employers
Also worked at Stealth Startup485
Andrew ChenGeneral Partner at Andreessen HorowitzGabriel PereyraCo-founder & President of HarveyErica VanInvestment Director at Intel CapitalHemamAdvisor at Clear VenturesArhaan A.Deeptech Fellow at Clear VenturesHamish GarnettAssociate at Manta Ray Ventures
+ 479 more
Also worked at Macadamia (YC W25)1
Also worked at SpaceX243
Roelof BothaAdvisor & former Steward at Sequoia Capital; SpaceX board memberSteve JurvetsonCo-founder of Future VenturesAsanka JayasuriyaPortfolio Support at 8VCJustin RoseInvestment Team at 8VCGarry HillInvestment at Makers FundHelen LiangFounder & General Partner at FoundersX Ventures
+ 237 more
Also worked at NASA Jet Propulsion Laboratory121
Frank RotmanCo-Founder and Partner Emeritus at QED InvestorsInca ComanVenture Partner at ARCH Venture PartnersKevin DunlapCo-Founder and Managing Partner at Calibrate VenturesRoger CarterVP of Engineering at Prime Movers LabAndrew ChanInvestor & ConsultantShalini HauptAssociate at Clocktower Ventures
+ 115 more