Fundraising Fox
/Companies
Sign in

FileStack

DefunctYC S12

San Antonio, US · Founded 2012 · 50 employees · 9 known investors

Find your way into FileStack

Sign up to see every warm intro you have to FileStack

  • Paths you didn't know you had: your email and LinkedIn already hold routes to the FileStack team. We find them for you
  • 2nd- and 3rd-degree connections: the friend-of-a-friend routes that take hours to manually find through your inbox or LinkedIn
  • Answers now, not in days: momentum is everything in a raise. Skip asking around whether someone knows someone

Days of research, done the moment you sign in, with every route ranked by how warm it is.

Sign up with GoogleAlready have an account? Log in

Filestack provides APIs and UI integrations for uploading, transforming, and delivering files and images. It serves developers and app creators who need to manage file operations at scale across web and mobile platforms.

Also known as CloudTop, Inc. · Filepicker.io

Cloud ComputingDeveloper ToolsEnterprise SoftwareFuture of WorkSaaSUnited States of AmericaAmerica / CanadaPartly Remote

Founders & leadership· Y Combinator alumni (S12)

FileStack was founded in 2012 by Brett van Zuiden, Liyan David Chang, Anand Dass, and Thomas Georgiou.

BVBrett van Zuiden
Brett van ZuidenFounder & CEO2011–2014Brett van Zuiden is the founder and CEO of Filestack, which provides APIs and UI integrations for uploading, transforming, and delivering files and images across web and mobile platforms.
LDLiyan David Chang
Liyan David ChangFounderformerDavid Chang studied computer science at MIT and worked with the U.S. Digital Service and White House on the Healthcare.gov project; he is now focused on health insurance through Devoted Health.
ADAnand Dass
Anand DassCo-Founder & COO2012–2014Anand Dass previously led business model architecture for Meta's wearables division and built the company's AR/VR app ecosystem; he also served on Postmates' executive team during its marketplace scaling phase. He holds an MBA from MIT Sloan, worked at McKinsey, and is a YC founder with over 20 years of experience across technology platforms and business development.
TGThomas Georgiou
Thomas GeorgiouFounderformer

Investors · 9

Y Combinatorlisted by Y CombinatorSan Francisco · $500K

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

Andreessen HorowitzreportedMenlo Park · $500K – $50M

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

DCVC (Data Collective)reportedPalo Alto · $5M – $25M

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

Highland Capital PartnersreportedCambridge · $1M – $10M

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

Pear VCreportedSan Francisco · $150K – $4M

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

Sherpalo VenturesreportedMenlo Park

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

Streamlined VenturesreportedPalo Alto · $100K – $1M

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

SV AngelreportedSan Francisco · $150K – $20M

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

Related companies · 9

Firefox,Mozilla is a global community organization that develops and maintains open-source internet infrastructure, including the Firefox web browser and Thunderbird email client, while advocating for internet openness, privacy, and user control. The organization also invests in responsible technology startups and creates open-source AI tools for developers.
AgentMailAgentMail provides an email inbox API that enables AI agents to create and manage their own email accounts. The platform serves developers building AI agents that need email communication capabilities.
CloudinaryCloudinary provides visual asset management and optimization tools for e-commerce teams, using AI-driven automation to enhance product images and videos for faster loading and improved conversion rates across sales channels.
PropelAuthPropelAuth provides authentication and user management infrastructure for developers building B2B and B2C applications. The platform offers integrated tools for user identity, security, and relationship management to streamline the developer experience.
UploadcareUploadcare provides a file handling product and service, including upload, CDN delivery, and image processing accessed through its API. This page describes its bug bounty program for security researchers.
Wild MooseWild Moose builds an AI-powered on-call copilot that automates root cause analysis for production incidents, designed for engineering teams in fast-moving environments. The platform reduces investigation time and helps organizations resolve incidents faster while reducing the on-call burden on engineers.
ChimaChima builds AI and data-driven solutions for marketing and business performance, founded by award-winning researchers with expertise in AI technology.
CloudthreadCloudThread helps engineering teams optimize and manage cloud computing costs as a core operational metric. The company focuses on bringing visibility and efficiency to cloud infrastructure spending.
CantoCanto provides a digital asset management (DAM) platform that centralizes a brand's digital assets and product content, with AI-powered search, distribution, and collaboration tools. It serves marketing and brand teams managing their content lifecycle across an organization.

Companies working in the same space as FileStack.

Legal entities · 1

corporate structure
CloudTop, Inc.

Frequently asked questions

What does FileStack do?
Filestack provides APIs and UI integrations for uploading, transforming, and delivering files and images. It serves developers and app creators who need to manage file operations at scale across web and mobile platforms.
Who founded FileStack?
FileStack was founded by Brett van Zuiden, Liyan David Chang, Anand Dass, Thomas Georgiou in 2012.
Who are FileStack's investors?
FileStack's investors include Scaleworks, Y Combinator, Andreessen Horowitz, DCVC (Data Collective), Highland Capital Partners, Pear VC, Sherpalo Ventures, Streamlined Ventures and 1 more.
Where is FileStack headquartered?
FileStack is headquartered in San Antonio, US.