Roy Rubin

Partner / Co-Founder atR-SquaredLos Angeles

Roy Rubin is a Founding Partner at R-Squared Ventures and former CEO of Magento. He focuses on early-stage investments in sectors like Fintech, SaaS, and E-commerce.

What Roy can write

Writes checks of$250K to $3M
Comes in atPre-seed, SeedMostly follows a lead
Email the firm[email protected]The firm's own inbox for founders.

R-Squared writes $250K to $3M checks, larger than 33% of firms in the atlas.

Bars: how many firms report each check band. Highlighted: R-Squared.

Career

  1. Magento · CEO
  2. R-Squared Ventures · Founding Partner
    Now

Companies founded

MagentoR-Squared Ventures

Investments named in public bios

Loop CommerceTaxJarAryaAnyRoadOoohMesh PaymentsJusstGlowwBoardsUpside FinanceSuperfiliateSidebarFonduePanjayaOpenbaseNimble

Focus

FintechAIEnterprise/SMB SaaSEcommerce EnablementMarketplaces

Also at R-Squared

Partners like Roy

At firms with a similar stage, sector and check size.

Alert me when R-Squared is active

One email when Roy's firm raises a fund, adds a partner or shows new activity.

Founders and investors at a Mode VC gathering

Send Mode VC your deck

Raising a pre-seed or seed round? We write $1M to $5M first checks and help founders with distribution. A partner reads every deck.

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Questions

Who is Roy Rubin?

Roy Rubin is a Founding Partner at R-Squared Ventures and former CEO of Magento. He focuses on early-stage investments in sectors like Fintech, SaaS, and E-commerce.

How much does Roy Rubin invest?

Roy Rubin invests through R-Squared, which writes checks of $250K to $3M at pre-seed, seed.

How do I pitch Roy Rubin?

Email [email protected], the firm's inbox for founders, and name Roy in the subject. A warm intro from a founder R-Squared backed works better.

What did Roy Rubin do before R-Squared?

CEO at Magento.

Last updated 2026-10-15. Is this you? Ask for a correction.