/Companies

Tandem

YC S24

San Francisco, US · Founded 2023 · 22 employees · Hiring · 36 known investors

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Tandem is a marketplace that simplifies commercial office space search for companies by consolidating market access, verified pricing and availability, and expert negotiation support in one platform. The company aims to replace the traditional fragmented brokerage process with transparent, faster office search and relocation services.

Also known as Inc. · Tandem Space · Tandem Space, Inc.

B2B MarketplacesEnterprise SoftwareMarketplacesPropTechSaaSReal EstateB2BUnited States of AmericaAmerica / CanadaPartly Remote

Founders & leadership· Y Combinator alumni (S24)

Tandem was founded in 2023 by Rafi Sands, Sean Miller, Brendan Suh, Ben Lowenstein, and Christophe Barre.

RSRafi Sands
Rafi SandsCEO + co-founderHe completed research on post-COVID office market trends during a two-year period at Stanford under Professor Nick Bloom.
SM
Sean MillerCo-founder, CTO2024–2026Sean Miller founded Blueberry in the W18 batch and is currently building Tandem, which launched in S24.
BSBrendan Suh
Brendan SuhCo-Founder & COOBrendan Suh is co-founder and chief operating officer of Tandem, a space technology company.
BLBen Lowenstein
Ben LowensteinCo-founder · Advisor
CBChristophe Barre
Christophe BarreFounderChristophe Barre is a Columbia graduate and founder of Tandem, which provides an AI platform for field deployment and implementation teams in B2B SaaS. He previously participated in Y Combinator's S20 cohort.
AH
Al Harth Al-janabyFounder
JJ
James Jarrett WalkerFounder
LH
Lauren HumphreyFounder
MS
Matthew SabatiniFounder
MM
Melissa MillerFounder

Investors · 36

J4 Ventureslisted by J4 VenturesNew York

How we know: J4 Ventures's portfolio page · the VCSheet dataset · Y Combinator's founder network · Not right? Tell us

Pioneerlisted by PioneerToronto, Ontario

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AccelreportedPalo Alto · $500K – $100M

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Agrolimen Venturesreported

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Capitalize VCreportedChicago · $100K – $200K

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Collide CapitalreportedNew York · $250K – $1M

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EQTreportedNew York

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General CatalystreportedSan Francisco · $30M

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KinnevikreportedStockholm

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MAGIC FundreportedLos Angeles · $50K – $5M

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Rice CapitalreportedCovina

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StoryHousereportedSisters

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Founder mafia

4 people who came through Tandem went on to found or lead other companies.

Related companies · 10

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Companies working in the same space as Tandem.

Legal entities · 1

corporate structure
Tandem Space, Inc.

Frequently asked questions

What does Tandem do?
Tandem is a marketplace that simplifies commercial office space search for companies by consolidating market access, verified pricing and availability, and expert negotiation support in one platform. The company aims to replace the traditional fragmented brokerage process with transparent, faster office search and relocation services.
Who founded Tandem?
Tandem was founded by Rafi Sands, Sean Miller, Brendan Suh, Ben Lowenstein, Christophe Barre in 2023.
Who are Tandem's investors?
Tandem's investors include J4 Ventures, Maiora Rebel Ventures, Pioneer, Rebel Fund, Soma Capital, The 23 Fund, The MBA Fund, Y Combinator and 28 more.
Where is Tandem headquartered?
Tandem is headquartered in San Francisco, US.