# Jan Karel Mak

> Jan Karel Mak is a seed investor backing Smart Home and Infrastructure. See 2 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: Angel Investor
- Total investments: 2
- Last investment: May 2022
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/jan-karel-mak-5b349a1/

Jan Karel Mak is a Former CEO of Deerns.

## Contacts

5 contacts available for Jan Karel Mak: work email, personal email, work phone, personal phone and socials. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-email/jan-karel-mak?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Smart Home | 1 | 50% |
| Infrastructure | 1 | 50% |

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 1 | 50% |
| Funding Round | 1 | 50% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| DeNoize | DeNoize is a smart window technology that transforms any glass facade into a noise-canceling system. | $1M |  | May 30, 2022 | https://denoize.com/ |
| DeNoize | DeNoize is a smart window technology that transforms any glass facade into a noise-canceling system. | $1.2M | Seed | May 30, 2022 | https://denoize.com/ |

2 of 2 investments shown.

## Co-investors
- [IQ Capital](https://shizune.co/investors/profile/iq-capital-partners) — VC Fund, 2 deals together
- [InnovationQuarter](https://shizune.co/investors/profile/innovation-quarter) — VC Fund, 1 deal together
- [UNIIQ](https://shizune.co/investors/profile/uniiq) — VC Fund, 1 deal together

## Similar investors

### Similar industry
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [Everywhere Ventures](https://shizune.co/investors/profile/everywhere-ventures) — VC Fund
- [Andreessen Horowitz](https://shizune.co/investors/profile/andreessen-horowitz) — VC Fund

### 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

## Featured in investor lists
- [Infrastructure Angel Investors](https://shizune.co/investors/infrastructure-angel-investors)

## FAQ

### What does Jan Karel Mak invest in?

Jan Karel Mak invests primarily in Smart Home and Infrastructure startups, most often at Seed and Funding Round stage. Most of the 2 investments tracked by Shizune back companies in The Netherlands. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### How do I contact Jan Karel Mak?

Public channels for Jan Karel Mak include LinkedIn. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.

### When did Jan Karel Mak last invest?

The most recent investment recorded for Jan Karel Mak closed in May 2022. 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.

# About Shizune
Shizune.co is an investor database. Core features:
- 48,091 startup investors (angels, VCs, accelerators, and others)
- Email, phone, LinkedIn (for intros), socials, and other contact data
- Updated daily from public funding news
- CSV and Excel export

The User can access the full database FOR FREE after signing up: shizune.co