# Karel Zheng

> Karel Zheng is a seed investor at KAYA (Prague) backing Medical, Computer and Software. See 4 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [KAYA](https://shizune.co/investors/profile/kaya-8ed9)
- Location: Prague, Czech Republic
- Total investments: 4
- Last investment: Dec 2025
- Lead investor: 50%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/karelzheng
- Website: https://karelzheng.com/

Karel Zheng is a General Partner at KAYA VC, the leading early-stage venture capital fund in Central and Eastern Europe. He invests pre-seed to Series A into artificial intelligence, developer tools, infrastructure software, vertical software, healthcare technology, and B2B SaaS, with check sizes ranging from $250K to $4M.His portfolio includesBetter Stack, E2B, Jutro Medical, getviktor.com, GenPeach AI, Pencil.dev , Minerva Humanoids, True Claim, and Artificial.Agency. KAYA's broader portfolio includes unicorns Rohlik, Docplanner, and Booksy across 60+ companies and $500M+ AUM.Karel is a Forbes 30 Under 30 honoree and one of the youngest fund partners in Europe. He is based in Prague and Warsaw, with presence in San Francisco and London. Amateur endurance athlete - half iron mans, ultra trails, marathons.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Medical | 1 | 25% |
| Computer | 1 | 25% |
| Software | 1 | 25% |
| Health Care | 1 | 25% |
| Network Security | 1 | 25% |

6 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 1 | 25% |
| Pre-Seed | 1 | 25% |
| Series A | 1 | 25% |

### Country

| Country | Investments | Share |
| --- | --- | --- |
| Poland | 1 | 25% |
| Hungary | 1 | 25% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Jutro Medical | Jutro Medical offers a combination of online and offline primary care — pairing mobile first telemedicine with physical clinic | $28.2M | Series A | Dec 16, 2025 |  |
| TopK | TopK features native support for both vector search and keyword search in a single, unified system. With its powerful query expression language, TopK enables you to build reliable search applications (semantic search, RAG, multi-modal, you name it) without juggling multiple databases or services. Our unified retrieval engine will evolve tosupport document transformation, query understanding (parse metadata filters from user query), and adaptive ranking (provide more relevant results by sending “relevance feedback” back to TopK) under one roof. | $5.5M | Seed | Jul 01, 2025 |  |
| Riptides | Riptides is the non-human identity fabric for your workloads and AI agents, and they trust Every Connection. Even the Autonomous Ones. | $3.3M | Pre-Seed | Apr 23, 2025 |  |
| Jutro Medical | Jutro Medical offers a combination of online and offline primary care — pairing mobile first telemedicine with physical clinic | $13M | Series A | Mar 19, 2025 |  |

4 of 4 investments shown.

## Co-investors
- [Inovo.vc](https://shizune.co/investors/profile/inovo-vc) — VC Fund, 2 deals together
- [Aternus](https://shizune.co/investors/profile/aternus) — VC Fund, 1 deal together
- [Cloudbreak](https://shizune.co/investors/profile/cloudbreak) — VC Fund, 1 deal together
- [Earlybird Venture Capital](https://shizune.co/investors/profile/earlybird-venture-capital) — VC Fund, 1 deal together
- [Fluent Ventures](https://shizune.co/investors/profile/fluent-ventures) — VC Fund, 1 deal together
- [Irregular Expressions](https://shizune.co/investors/profile/irregular-expressions) — VC Fund, 1 deal together

## About KAYA

VC Fund · Prague, Czech Republic

KAYA evolved from Enern Investments - a regional financial group formed in Prague in 2010 that grew alongside the CEE ecosystem across clean energy, tech, real estate, and other activities.Ten years and €500m AUM later, Enern remains a holding for diverse investments while KAYA is conceived as a separate, focused successor of Enern Tech for allthings venture capital, with 40+ investments and latest fund of €90.

5 contacts available at KAYA.

| Name | Title | Profile |
| --- | --- | --- |
| Petr Smida | Founding Partner | https://shizune.co/investors/profile/petr-smida |
| Karel Zheng | Partner | https://shizune.co/investors/profile/karel-zheng |
| Martin Rajcan | General Partner | https://shizune.co/investors/profile/martin-rajcan-3ca9 |
| Pavel Mucha | Founding Partner | https://shizune.co/investors/profile/pavel-mucha-2 |
| Tomas Obrtac | General Partner | https://shizune.co/investors/profile/tomas-obrtac |

## 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 Karel Zheng invest in?

Karel Zheng invests primarily in Medical, Computer and Software startups, most often at Seed and Pre-Seed stage. Most of the 4 investments tracked by Shizune back companies in Poland. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Karel Zheng last invest?

The most recent investment recorded for Karel Zheng closed in Dec 2025. Shizune tracks 4 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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