Jussi Sainiemi
Partner @ Voima Ventures
Helsinki, Finland
Jussi Sainiemi is a seed investor at Voima Ventures in Helsinki focused on Water and Software. Jussi Sainiemi - Partner @ Voima Ventures
- Total investments:
- 9
- Last investment:
- Lead investor:
- 67%
Last updated:
For AI agents: llms.txt
Industries Jussi Sainiemi invests in
Stages Jussi Sainiemi invests in
Countries Jussi Sainiemi invests in
Contacts
| Type | Contact | Validation |
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| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Investment Focus
Industry
- Water 1 (11%)
- Software 1 (11%)
- Wellness 1 (11%)
- Agentic AI 1 (11%)
- Electronics 1 (11%)
Stage
- Seed 3 (33%)
- Pre-Seed 2 (22%)
- Venture - Series Unknown 2 (22%)
- Series A 1 (11%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Gosta Labs focuses on building healthcare-specialized machine learning models to drive improved efficiency and outcomes. | $8.7M / Seed / Nov 27, 2025 | ||
| 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 is Building silicon-based quantum processors to power the scale up of quantum computing. | $2M / Pre-Seed / Mar 14, 2023 | ||
| QuantrolOx is building automated machine learning-based control software for quantum technologies to tune, stabilize, and optimize qubits. | $3.7M / Seed / Mar 07, 2023 | ||
| 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 | ||
| 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 | ||
| QuantrolOx is building automated machine learning-based control software for quantum technologies to tune, stabilize, and optimize qubits. | $1.9M / Seed / Feb 23, 2022 | ||
| 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. | $3.5M / Venture - Series Unknown / Sep 21, 2020 | ||
| 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 |
Co-Investors
About Voima Ventures
Voima Ventures’ mission is to solve major global problems by combining science, entrepreneurship, and value adding capital. They shed light on the ideas and technology which require time and courage to build. Industry domains include bio and new materials, medical technologies and life sciences, imaging and optics, IoT and electronics, robotics,software & ICT and AI. In addition, Voima Ventures has invested in more than 30 deep tech startups, including companies like Solar Foods, Infinited Fiber Company, and Dispelix. Cornerstone investors are VTT Technical Research Centre of Finland and European Investment Fund (EIF), backed by Finnish private and institutional investors.
Voima Ventures Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Harry Santamaki
Venture Partner
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Inka Mero
Founder & Manging Partner
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Jussi Sainiemi
Partner
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Mikko Kumpulainen
Partner
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Pontus Strahlman
Partner
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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.
How do I contact Jussi Sainiemi?
Public channels for Jussi Sainiemi 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 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 Sep 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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