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Macadamia (YC W25) — AI agents for complex engineering projects

Macadamia builds AI agents for complex engineering projects. They automate both engineering & business processes, to automate away all low-leverage work.

Macadamia is a Y Combinator company in the Winter 2025 batch. Its directory entry describes it as: AI Agents for Complex Engineering Projects. The founders listed are Abel Van Steenweghen (Founder/CEO), Brecht Pierreux (Founder/CTO) (Y Combinator directory entry, January 24, 2025).

6 more companies from YC Winter 2025 ↓

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Macadamia

New accelerator entry · 2025-01-24 · the record

Winter 2025
batch
2
people
Early
stage
Belgium
region
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What the record says

BatchWinter 2025
Announced2025-01-24
StageEarly
StatusActive
Team size2
IndustryB2B
Sub-industryB2B -> Engineering, Product and Design
RegionsBelgium, Europe
BasedGhent, Flanders, Belgium
HiringYes
Sitehttps://macadamialabs.com
Founded2025
YC group partnerAaron Epstein
Launches posted on YC1
Open roles listed2

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Also in YC Winter 2025

Same batch, B2B first.

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In their words

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.

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Example from a real report (our sample on Target): “Target eliminated approximately 1,800 corporate positions, with around 1,000 employees receiving layoff notices and the remainder accounted for by eliminating open roles.” Source: NBC News

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What the Full Report on Macadamia covers

  1. The Short Answer

  2. Which Company This Is

  3. What They Do, And How The Money Works

  4. Who Runs It, And How To Reach Them

  5. The Money: Funding, Valuation, Runway

  6. Who Pays Them, And Who They Are Up Against

  7. Warning Bells

  8. Sources

    8 cited sources found

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Sourced from the company's Y Combinator directory entry, and from the company's own site, read directly on 2026-09-27 (macadamialabs.com).

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Macadamia: Accepted into Y Combinator Winter 2025
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Permanent URL: https://mentionfox.com/funding/yc-macadamia
Last updated 2026-10-20
Primary record: Y Combinator directory entry
Macadamia (YC W25) — AI agents for complex engineering projects. MentionFox, 2026-10-20. https://mentionfox.com/funding/yc-macadamia