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Rebulk

YC S25

Olathe, US · Founded 2025 · 3 employees · 12 known investors

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Rebulk provides software and computer vision technology to track and manage bulk material inventory across industries like agriculture, recycling, and logistics. The platform uses cameras, LiDAR, and AI to replace manual estimates and guesswork in managing stockpiles and transload operations.

Also known as Scribe Social, Co. · dScribe AI

AI & Machine LearningEnterprise SoftwareLogistics & Supply ChainSaaSArtificial IntelligenceLogisticsSupply ChainIndustrialUnited States of AmericaAmerica / Canada

Founders & leadership· Y Combinator alumni (S25)

Rebulk was founded in 2025 by Warren Wijaya Wang and Cole Robertson.

WWWarren Wijaya Wang
Warren Wijaya WangCo-Founder and CEOWarren Wijaya Wang leads Rebulk as co-founder and CEO. He previously served as head of product at Milk Moovement, a Series A agricultural supply chain company, and as an investor at Dynamo Ventures focused on early-stage industrial companies. He also held a strategy and operations role at Chick-fil-A Corporate, where he worked on autonomous vehicle and delivery initiatives.
CRCole Robertson
Cole RobertsonCTO and Co-founderHe previously served as Head of Engineering at Chipp and was an early engineer at Tropic during its seed to Series B scaling. He has prior experience developing aviation products at Garmin and founded a SaaS consulting firm focused on MVP development.
WWWarren Wang
Warren WangFounderFounder at Ember
JM
Jordan Mryyan

Investors · 12

KCRise Fund✓ confirmed by RebulkKansas City · $1Mvia Darcy Howe · inferred

How we know: the company's own site · KCRise Fund's portfolio page · funding news · Y Combinator's founder network · Not right? Tell us

Redbud VC✓ confirmed by RebulkColumbia · $50K – $150K

How we know: the company's own site · Y Combinator's founder network · Not right? Tell us

Y Combinator✓ confirmed by RebulkSan Francisco · $500K

How we know: the company's own site · the Y Combinator directory · open dataset · 5k.vc investor directory · Not right? Tell us

FCVC✓ confirmed by RebulkSan Francisco

How we know: the company's own site · Not right? Tell us

Flyover Capitallisted by Flyover CapitalKansas City · $500K – $2M

How we know: Y Combinator's founder network · flyovercapital.com · Not right? Tell us

Blast.Clubreported$5.5M

How we know: Y Combinator's founder network · Not right? Tell us

EquipmentSharereportedColumbia

How we know: Y Combinator's founder network · Not right? Tell us

FundersClubreportedSan Francisco · $290K

How we know: Y Combinator's founder network · Not right? Tell us

Great Wave VenturesreportedNew York · $250K – $1M

How we know: Y Combinator's founder network · Not right? Tell us

Tekedia CapitalreportedLagos · $1K

How we know: Y Combinator's founder network · Not right? Tell us

WefunderreportedSan Francisco

How we know: Y Combinator's founder network · Not right? Tell us

The YC application· Summer 2025 batch

▶ Demo Day video — watch on YC ↗

Founder mafia

3 people who came through Rebulk went on to found or lead other companies.

Warren WangFounderFounded EmberWarren Wijaya WangCEOFounded Milk MoovementCole RobertsonCTOFounded Dscribeai

Related companies · 7

Poka LabsPoka Labs provides AI agents that automate commercial operations for industrial B2B companies, including pricing, quoting, and guided selling by ingesting and learning from existing business data and processes.
WazeWorld's largest community-based traffic and navigation app.
Kanava AIKanava AI provides voice-based AI agents for wholesale distributors that handle routine inbound sales activities like stock checks, pricing inquiries, and CRM updates, with capabilities that expand to managing full sales calls and identifying upsells as the system learns from top performers.
UltraUltra manufactures OP1, a stationary multi-purpose AI robot for warehouse automation that handles repetitive tasks like packing, sorting, and kitting. The robot targets industrial businesses and warehouses across the United States.
chrtchrt is a logistics platform for time-critical shipping that provides real-time tracking, dispatch management, and proof-of-delivery capabilities for shippers, freight forwarders, and couriers. The platform integrates multiple carriers and drivers into a single dashboard, with features including route optimization, customizable alerts, IoT trackers, and automated billing.
DartboardDartboard Energy processes raw alarms and state data from industrial systems into classified events with audit trails, eliminating manual log reconstruction for energy and industrial operations. The platform reads data from data lakes, historians, and energy management systems, then writes structured events back to existing workflow tools.
Hello GravelHello Gravel is an online platform for ordering bulk landscape materials like gravel, stone, and mulch with delivery to homeowners and contractors. The company simplifies the purchasing process by providing transparent pricing and reliable delivery scheduling.

Companies working in the same space as Rebulk.

Legal entities · 1

corporate structure
Scribe Social, Co.

In the news

Rebulk - Accurately measure and monitor bulk inventoryycombinator.com · Jul 2025

Frequently asked questions

What does Rebulk do?
Rebulk provides software and computer vision technology to track and manage bulk material inventory across industries like agriculture, recycling, and logistics. The platform uses cameras, LiDAR, and AI to replace manual estimates and guesswork in managing stockpiles and transload operations.
Who founded Rebulk?
Rebulk was founded by Warren Wijaya Wang, Cole Robertson in 2025.
Who are Rebulk's investors?
Rebulk's investors include Abstraction Capital, KCRise Fund, Redbud VC, Y Combinator, FCVC, Flyover Capital, Blast.Club, EquipmentShare and 4 more.
Where is Rebulk headquartered?
Rebulk is headquartered in Olathe, US.