# Raullen Chai

> Raullen Chai is a seed investor at MachineFi Lab backing Infrastructure and Sustainability. See 2 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [MachineFi Lab](https://shizune.co/investors/profile/machinefi-lab)
- Total investments: 2
- Last investment: Jul 2024
- Lead investor: 50%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/raullenchai/
- X (Twitter): https://twitter.com/raullen
- Website: https://x.com/raullen
- Facebook: https://www.facebook.com/raullenchai

Raullen Chai is a seed investor at MachineFi Lab focused on Infrastructure and Sustainability. Raullen Chai is the Co-Founder and CEO of MachineFi Lab. He previously worked at Uber as a Lead of Crypto R&D and Engineering Security. Raullen Chai attended the University of Waterloo.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Infrastructure | 1 | 50% |
| Sustainability | 1 | 50% |
| Decentralized Finance (DeFi) | 1 | 50% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Nubila | Nubila is a pioneer in the Environmental, Social, and Governance (ESG) data industry, committed to revolutionizing sustainability projects with new solutions. Nubila uses AI and ESG tokenization to enhance decision-making, drive sustainable development, and generate financial solutions by creating the DePIN ecosystem's largest ESG Data Oracle. | $2.5M | Seed | Jul 01, 2024 |  |
| Bedrock | Bedrock is a pioneering liquid restaking mechanism in the decentralized infrastructure. |  | Seed | May 01, 2024 |  |

2 of 2 investments shown.

## Co-investors
- [OKX Ventures](https://shizune.co/investors/profile/okx-ventures) — VC Fund, 2 deals together
- [Waterdrip Capital](https://shizune.co/investors/profile/waterdrip-capital-3fdc) — VC Fund, 2 deals together
- [Amber Group](https://shizune.co/investors/profile/amber-ai) — VC Fund, 1 deal together
- [OKX Ventures](https://shizune.co/investors/profile/block-dream-fund) — VC Fund, 1 deal together
- [The Boston Consulting Group](https://shizune.co/investors/profile/boston-consulting-group) — VC Fund, 1 deal together
- [Arche Fund](https://shizune.co/investors/profile/coin98-ventures) — VC Fund, 1 deal together

## About MachineFi Lab

VC Fund

MachineFi Lab operates as a designer for IoT and blockchain technologies.

2 contacts available at MachineFi Lab.

| Name | Title | Profile |
| --- | --- | --- |
| Raullen Chai | Co-Founder and CEO | https://shizune.co/investors/profile/raullen-chai |
| Jing Sun | Co-Founder | https://shizune.co/investors/profile/jing-sun |

## Similar investors

### Similar stage
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund
- [Right Side Capital Management](https://shizune.co/investors/profile/right-side-capital-management) — VC Fund

## FAQ

### What does Raullen Chai invest in?

Raullen Chai invests primarily in Infrastructure, Sustainability and Decentralized Finance (DeFi) startups, most often at Seed stage. Most of the 2 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Raullen Chai last invest?

The most recent investment recorded for Raullen Chai closed in Jul 2024. Shizune tracks 2 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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