# StackOne Technologies

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/stackone-technologies

- Industry: Software
- Headquarters: Canterbury, UK
- Website: www.stackone.com
- Total disclosed funding: $24M
- Latest round: Series A (Apr 11, 2025)
- Investors on record: 8

## About

Based in Canterbury, UK, and founded in 2023 by co-founders Romain Sestier (CEO) and Guillaume Lebedel (CTO), StackOne Technologies Ltd operates as a provider of an integration platform as a service for SaaS companies to develop products that can integrate with client software stacks. In May 2025, StackOne Technologies Ltd raised GBP 15 million in series A funding led by new investor GV, with participation from other new investors Workday Ventures and XTX Ventures. Individual and returning investors Episode 1 Ventures and Playfair Capital also participated in the round. The company provides an integration platform as a service (IPaaS) to simplify the process of connecting software tools. The platform offers various integrations, including pre-mapped unified APIs for software tools across different categories like HRIS (such as ADP Workforce Now, BambooHR, and Breathe), CRM (like Attio, Bullhorn, and HubSpot CRM), marketing (such as Airship, Braze, and HubSpot Marketing), and ATS (like Ashby, Greenhouse, Lever, Pinpoint, and Recruitee). The company will use the May 2025 funding for further research and development.

## Funding rounds

- Series A, Apr 11, 2025, $20M — GV, Playfair Capital, Episode 1 Ventures, Workday Ventures, XTX Ventures
- Seed, Nov 14, 2023, $3.7M — Playfair Capital, Episode 1 Ventures, ScoutFund, Portfolio Ventures, Blissgrowth

## Investors

- Playfair Capital (https://capitalatlas.ai/funds/playfair-capital) — Seed, Series A
- Episode 1 Ventures (https://capitalatlas.ai/funds/episode-1-ventures) — Seed, Series A
- ScoutFund (https://capitalatlas.ai/funds/scoutfund) — Seed
- Portfolio Ventures (https://capitalatlas.ai/funds/portfolio-ventures) — Seed
- Blissgrowth (https://capitalatlas.ai/funds/blissgrowth) — Seed
- GV (https://capitalatlas.ai/funds/gv) — Series A
- Workday Ventures (https://capitalatlas.ai/funds/workday-ventures) — Series A
- XTX Ventures (https://capitalatlas.ai/funds/xtx-ventures) — Series A