Who founded StackOne?

StackOne was founded by Romain Sestier in 2023.

Who are StackOne's investors?

StackOne's investors include Episode1, GV (Google Ventures), Inception Fund, Preston-Werner Ventures, Thunder Future LLC, Playfair Capital, Workday Ventures, XTX Markets.

Where is StackOne headquartered?

StackOne is headquartered in Newbury, GB.

StackOne

Newbury, GB · Founded 2023 · 56 employees on LinkedIn · 8 known investors

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StackOne provides infrastructure for AI agents to integrate with and act across business applications through optimized connectivity, execution, and security features. The platform serves companies and developers building AI agents into products or using off-the-shelf agents like Claude Code.

AI & Machine Learning Developer Tools Enterprise Software

Founders & leadership

StackOne was founded in 2023 by Romain Sestier.

Romain SestierCo-founder & CEOHe previously held product leadership roles at Google, Yieldify (acquired by Publicis Groupe), and ContentSquare, and co-founded Upper.ai, an AI-powered data analytics tool.

Guillaume LebedelFounder

Romain Sestier Guillaume LebedelFounder

Investors · 8

Episode1listed by Episode1London · $317.5K – $2.5M

How we know: Episode1's portfolio page · a partner's Signal profile · the VCSheet dataset · open dataset · 5k.vc investor directory · Not right? Tell us

GV (Google Ventures)listed by GV (Google Ventures)Mountain View · $250K – $50M

How we know: GV (Google Ventures)'s portfolio page · open dataset · 5k.vc investor directory · Not right? Tell us

Inception Fundlisted by Inception Fund$110K – $1.1M

How we know: Inception Fund's portfolio page · Not right? Tell us

Preston-Werner Ventureslisted by Preston-Werner VenturesSan Francisco Bay Area · $500K – $3M

How we know: Preston-Werner Ventures's portfolio page · Not right? Tell us

Thunder Future LLClisted by Thunder Future LLCAzerbaijan

Playfair CapitalreportedLondon · $130K – $1.9M

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

Workday VenturesreportedSan Francisco

How we know: a partner's Signal profile · the VCSheet dataset · open dataset · 5k.vc investor directory · Not right? Tell us

XTX MarketsreportedBristol

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

Related companies · 7

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ComposioComposio provides a developer platform that gives AI agents and autonomous systems access to over 1,000 third-party tools with managed authentication, sandboxed execution, and intelligent tool selection. The platform enables developers to build multi-step AI workflows across applications without handling OAuth flows or tool configuration.

MergeMerge provides a unified API and integration infrastructure that lets software companies connect their products to hundreds of third-party systems (HRIS, accounting, ticketing, file storage, CRM) and deploy AI agents that take authenticated actions across enterprise tools. It also offers model routing to direct LLM requests to different providers, serving product and engineering teams building AI features and integrations.

PipedreamPipedream provides an integration and automation platform for developers to build, run, and deploy AI agents and workflows that connect thousands of APIs. Its offerings include a developer SDK for embedding integrations, a workflow builder, and MCP servers that add APIs and tools to AI agents.

n8nn8n is a visual and code-based workflow automation platform that enables technical teams to build, connect, and deploy AI agents and integrations with flexible deployment options ranging from on-premise to cloud infrastructure.

WorkatoWorkato provides an integration and automation platform that connects enterprise applications and data systems across cloud and on-premise environments.

GumloopGumloop is a platform for building and deploying AI agents that automate business tasks such as data analysis, customer support, CRM management, and meeting preparation. The platform serves enterprise teams and includes multi-agent workflow orchestration, integrations with workplace tools like Slack and Teams, and security controls for managing AI model access and data governance.

Companies working in the same space as StackOne.

Frequently asked questions

What does StackOne do?: StackOne provides infrastructure for AI agents to integrate with and act across business applications through optimized connectivity, execution, and security features. The platform serves companies and developers building AI agents into products or using off-the-shelf agents like Claude Code.
Who founded StackOne?: StackOne was founded by Romain Sestier in 2023.
Who are StackOne's investors?: StackOne's investors include Episode1, GV (Google Ventures), Inception Fund, Preston-Werner Ventures, Thunder Future LLC, Playfair Capital, Workday Ventures, XTX Markets.
Where is StackOne headquartered?: StackOne is headquartered in Newbury, GB.