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Macadamia

Active · AI Agents for Complex Engineering Projects

WebsiteYC profile

Why it ranks

How the rank works
9signal of 100 · rising 5
  • went through YCProgram · this site+4
  • team of 2Team size · YC's directory+2.5
  • hiringHiring · Titles (titles.fru.dev), YC+2

A sum of public facts, not a judgement and not investment advice.

Competitors

AIBasetwo AIShared: complex engineering, lowPlug and PlayCanadaStartup →AIEpsilon3Shared: complex engineering, manufacturingYC S21Los AngelesStartup →AIDatafoldShared: automate both, engineering, projectYC S20New York CityStartup →
Companies closest to Macadamia
Company
Basetwo AIShared: complex engineering, lowPlug and Play Not statedAI
Epsilon3Shared: complex engineering, manufacturingYC S21ActiveAI
DatafoldShared: automate both, engineering, projectYC S20ActiveAI, Data

Adjacent

OtherKNOWRONShared: mechanical engineeringAlchemist Class 28MunichStartup →OtherLocalShared: serve customer500 Global MENA 10United Arab EmiratesStartup →Developer toolsAcquiredZarazShared: third partyYC W20San FranciscoStartup →OtherSafeSyncShared: third partyAntler 2024SingaporeStartup →AICorbuShared: engineering, constructionAlchemist Class 37San FranciscoStartup →
Companies next to Macadamia
Company
KNOWRONShared: mechanical engineeringAlchemist Class 28Not statedOther
LocalShared: serve customer500 Global MENA 10Not statedOther
ZarazShared: third partyYC W20AcquiredDevtools
SafeSyncShared: third partyAntler 2024Not statedOther
CorbuShared: engineering, constructionAlchemist Class 37Not statedAI

Also from W25 in AI

All of W25
AI.WaveInference for real-time AIYC W25ParisStartup →AI10xAI Sales Teams for Dental PracticesYC W25San FranciscoStartup →AIa0.devWe make mobile apps using AI.YC W25San FranciscoStartup →AIA1Zap by A1BaseThe social network layer for AI appsYC W25San FranciscoStartup →AIAdamAI Powered CADYC W25San FranciscoStartup →AIAfterQueryApplied research lab curating data solutions for foundation model…YC W25San FranciscoStartup →
Company
.WaveInference for real-time AIteam of 2ActiveAI, Devtools
10xAI Sales Teams for Dental Practicesteam of 3hiringActiveAI, Data
a0.devWe make mobile apps using AI.team of 3hiringActiveAI, Devtools
A1Zap by A1BaseThe social network layer for AI appsteam of 2ActiveAI, Devtools
AdamAI Powered CADteam of 4hiringActiveAI, Devtools
AfterQueryApplied research lab curating data solutions for foundation model…team of 30hiringActiveAI, Data, Devtools

Founders

  • Abel Van SteenweghenFounder/CEO
  • Brecht PierreuxFounder/CTO

About Macadamia

Macadamia builds AI agents for complex engineering projects. They automate both engineering & business processes, to automate away all low-leverage work. It integrates with all engineering data sources, technical documentation, and third-party software tools. Macadamia serves customers in mechanical engineering, manufacturing, and construction.

YC batch
W25 · Winter 2025
Status, per YC
Active
Category
AI
Team size
2
Location
Amsterdam, NH, Netherlands
Founded
2025
Checked
6h ago

Changes seen

HeadquartersNov 9, 2026

Moved its headquarters from Ghent, Flanders, Belgium to Amsterdam, NH, Netherlands.

Source ↗
RegionsNov 9, 2026

Now lists the region Netherlands, Remote and Partly Remote; no longer lists Belgium.

Source ↗

Macadamia in W25: 166 companies, 84% AI

LinkedIn

Macadamia: questions

Which YC batch was Macadamia in?

Macadamia was in Y Combinator's Winter 2025 batch (W25).

Is Macadamia still active?

Y Combinator lists Macadamia as active.

Who founded Macadamia?

Macadamia's founders, as listed on its YC page: Abel Van Steenweghen (Founder/CEO), Brecht Pierreux (Founder/CTO).

Where is Macadamia based?

Macadamia lists Amsterdam, NH, Netherlands as its location on YC's directory.