# Jussi Sainiemi

> Jussi Sainiemi is a seed investor at Tesi (Helsinki) backing Water and Software. See 9 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Tesi](https://shizune.co/investors/profile/tesi)
- Location: Helsinki, Finland
- Total investments: 9
- Last investment: Nov 2025
- Lead investor: 67%
- Last updated: Aug 2026
- LinkedIn: https://fi.linkedin.com/in/jussi-sainiemi-b652413

Jussi Sainiemi is a seed investor at Tesi in Helsinki focused on Water and Software. Jussi Sainiemi - Partner @ Voima Ventures

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Water | 1 | 11% |
| Software | 1 | 11% |
| Wellness | 1 | 11% |
| Agentic AI | 1 | 11% |
| Electronics | 1 | 11% |

17 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 3 | 33% |
| Pre-Seed | 2 | 22% |
| Series A | 1 | 11% |
| Funding Round | 1 | 11% |
| Venture - Series Unknown | 1 | 11% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Gosta Labs | Gosta Labs focuses on building healthcare-specialized machine learning models to drive improved efficiency and outcomes. | $8.7M | Seed | Nov 27, 2025 |  |
| AISTI | AISTI develops wood fiber-based acoustic tiles that are carbon negative, easy to recycle and plastic-free – bringing sustainability to construction tile by tile. | $30.4M | Series A | Dec 12, 2024 |  |
| SemiQon | SemiQon is Building silicon-based quantum processors to power the scale up of quantum computing. | $2M | Pre-Seed | Mar 14, 2023 |  |
| Quantrol Ox | QuantrolOx is building automated machine learning-based control software for quantum technologies to tune, stabilize, and optimize qubits. | $3.7M | Seed | Mar 07, 2023 |  |
| Nucu | Giving sleep a voice to support growing minds from childhood to young adulthood. At Nucu, we believe that sleep is the most powerful tool for a developing brain. It is the foundation for a child’s growth, focus, and happiness—yet millions of kids and teens struggle with bedtime routines, restless nights, and tired mornings. We are redefining sleephealth for children and teenagers aged 4–18 with safe, non-wearable technology that helps them sleep better, grow stronger, and thrive. By giving sleep a voice, we provide families with the insights needed to support growing minds during their most formative years. Why sleep matters for the 4–18 journey: Academic Performance: Enhancing cognitive function and focus for the classroom. Emotional Resilience: Supporting mental health through the rapid changes of adolescence. Physical Recovery: Fueling growth and athletic performance during the school years.Science-Backed & Parent-Approved Developed by a team including Oura founders and Polar and Nokia alumni, Nucu combines world-class health-tech expertise with a deep commitment to natural sleep. We give parents peace of mind by decoding sleep patterns without the need for wearable devices, ensuring a non-intrusive and restful environment for every stage of development.Better sleep today. A better foundation for tomorrow. | $1M | Seed | Nov 07, 2022 |  |
| Nucu | Giving sleep a voice to support growing minds from childhood to young adulthood. At Nucu, we believe that sleep is the most powerful tool for a developing brain. It is the foundation for a child’s growth, focus, and happiness—yet millions of kids and teens struggle with bedtime routines, restless nights, and tired mornings. We are redefining sleephealth for children and teenagers aged 4–18 with safe, non-wearable technology that helps them sleep better, grow stronger, and thrive. By giving sleep a voice, we provide families with the insights needed to support growing minds during their most formative years. Why sleep matters for the 4–18 journey: Academic Performance: Enhancing cognitive function and focus for the classroom. Emotional Resilience: Supporting mental health through the rapid changes of adolescence. Physical Recovery: Fueling growth and athletic performance during the school years.Science-Backed & Parent-Approved Developed by a team including Oura founders and Polar and Nokia alumni, Nucu combines world-class health-tech expertise with a deep commitment to natural sleep. We give parents peace of mind by decoding sleep patterns without the need for wearable devices, ensuring a non-intrusive and restful environment for every stage of development.Better sleep today. A better foundation for tomorrow. | $951.7K | Pre-Seed | Nov 07, 2022 |  |
| Quantrol Ox | QuantrolOx is building automated machine learning-based control software for quantum technologies to tune, stabilize, and optimize qubits. | $1.9M | Seed | Feb 23, 2022 |  |
| Monidor | Monidor develops innovative, smart, and small electronic devices. Monidor Oy develops Monidrop, an automated infusion monitor for intravenous infusion therapy. The company was founded in 2015 and is headquartered in Oulu, Finland. | $1.2M | Venture - Series Unknown | Aug 27, 2020 |  |
| Sofi Filtration | Backed by public innovation development funds as well as private investors, Sofi Filtration is a Finnish provider of state-of-the-art water filtration technology. It offers water treatment solutions that are robust and highly automated with industry's best performance. The Sofi Filter is a groundbreaking water cleaning and process waste waterhandling solution that can be applied to many industries such as mining, metallurgical and many more. | $3.2M |  |  |  |

9 of 9 investments shown.

## Co-investors
- [2xN](https://shizune.co/investors/profile/2xn) — VC Fund, 3 deals together
- [Hoxton Ventures](https://shizune.co/investors/profile/hoxton-ventures) — VC Fund, 2 deals together
- [Nielsen Ventures](https://shizune.co/investors/profile/nielsen-ventures) — VC Fund, 2 deals together
- [Cor Group](https://shizune.co/investors/profile/cor-group) — VC Fund, 1 deal together
- [Dhyan VC](https://shizune.co/investors/profile/dhyan-vc) — VC Fund, 1 deal together
- [Emerald Technology Ventures](https://shizune.co/investors/profile/emerald-technology-ventures) — VC Fund, 1 deal together

## About Tesi

VC Fund · Helsinki, Finland

Finnish Industry Investment Ltd is a government-owned investment company. It invests the proceeds accrued from the privatisation of state-owned companies in stimulating the growth and internationalisation of Finnish businesses.Finnish Industry Investment invests in venture capital funds and directly in growth companies, together with privateco-investors. The targets are in all sectors. Capital investments are needed for financing the growth of investee companies, and for spin-offs, major industrial investments, and sector and corporate restructurings.The investments of Finnish Industry Investment amount to over MEUR 570

5 contacts available at Tesi.

| Name | Title | Profile |
| --- | --- | --- |
| Henri Grundsten | Director | https://shizune.co/investors/profile/henri-grundsten |
| Juha Lehtola | Head of Direct VC Investments | https://shizune.co/investors/profile/juha-lehtola |
| Heli Kerminen | Director, Venture Capital Investments | https://shizune.co/investors/profile/heli-ahlroos |
| Jan Sasse | CEO | https://shizune.co/investors/profile/jan-sasse |
| Joni Karsikas | Investment Director | https://shizune.co/investors/profile/joni-karsikas |

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## FAQ

### What does Jussi Sainiemi invest in?

Jussi Sainiemi invests primarily in Water, Software and Wellness startups, most often at Seed and Pre-Seed stage. Most of the 9 investments tracked by Shizune back companies in Finland. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Jussi Sainiemi last invest?

The most recent investment recorded for Jussi Sainiemi closed in Nov 2025. Shizune tracks 9 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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