saas-integrations
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Your Support Queue Knows Who Will Churn
The Gainsight-Zendesk integration turns everyday support activity into shared context for customer success. Its real promise is not another dashboard, but a faster route from a warning signal to a human response.
Romain Sestier
Romain Sestier is the co-founder and CEO of StackOne, an integration platform that lets B2B SaaS products and AI agents connect to hundreds of enterprise systems through one unified API. After a decade spent maintaining integrations by hand at companies like Maxymiser, ContentSquare and Yieldify, and after building a product from zero to $1 billion in incremental revenue at Google, he and long-time collaborator Guillaume Lebedel started StackOne in 2023 to build the integration layer they always wished existed. The company reached six-figure revenue within weeks of launch and raised a $20M Series A led by GV in May 2025.
StackOne
StackOne is a London-based integration platform that gives B2B SaaS companies and AI agent builders a single unified API to connect to hundreds of enterprise systems - from HR and CRM to ticketing, messaging and identity. Combining a proprietary tool-calling LLM with a real-time, privacy-first engine, it offers 200+ pre-built connectors and thousands of ready-made actions so agents can reliably and securely take actions inside the software businesses already use. Founded in 2023 by Romain Sestier and Guillaume Lebedel, the company raised a $20M Series A led by GV (Google Ventures) in May 2025 and has surpassed 1 billion API calls.
Gregg Mojica
Gregg Mojica is the founder and CEO of Kinter.ai, the AI-accounting company that grew out of Alloy Automation, the integration platform he co-founded with Sara Du in 2019 (YC W20). He started coding at 12, shipped three apps before he turned 18, got into Cornell and skipped it to build payments infrastructure at First Data/Fiserv, then helped build Alloy into the connective tissue for thousands of ecommerce and AI-agent workflows backed by a16z and Bain Capital Ventures. Today his AI Accountants close the books for enterprises including Amazon, Mastercard and UPS.