Voytek Siewierski
Partner @ EEC Ventures
Menlo Park, United States
Voytek Siewierski is a Series A investor at EEC Ventures in Menlo Park focused on Software and Machine Learning. Before joining Rogers VP, Voytek was a partner with Mitsui Venture Partners in Silicon Valley.Earlier, Voytek was an Executive Director at NTT DoCoMo, spending 6 years in Japan and 3 years in the UK. Voytek played a key role in planning and implementing NTT DoCoMo’s Silicon Valley-based VC Fund – DoCoMo Capital.Earlier, Voytek was an activemember of i-mode project, which created the world’s largest and most successful mobile Internet portal. He has also developed a number of successful value added mobile services with partners such as Walt Disney Corporation, Warner Brothers, CNN and others.
- Total investments:
- 5
- Last investment:
- Lead investor:
- 60%
Last updated:
For AI agents: llms.txt
Industries Voytek Siewierski invests in
Stages Voytek Siewierski invests in
Countries Voytek Siewierski invests in
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Investment Focus
Industry
- Software 2 (40%)
- Machine Learning 2 (40%)
- Enterprise Software 2 (40%)
- B2B 1 (20%)
- SaaS 1 (20%)
Stage
- Series A 2 (40%)
- Seed 1 (20%)
- Series B 1 (20%)
- Convertible Note 1 (20%)
Country
- Poland 3 (60%)
- United States 1 (20%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Hardware Embedded SaaS, AI, deep learning, machine learning - the newest technology for wildfire detection | $2.5M / Convertible Note / Jun 13, 2022 | ||
| CashDirector helps SMB banks differentiate from competition, acquire more new business & protect client relationships using innovative added value services. CashDirector is the leading provider of bank branded accounting platforms with cash flow management tools for banks serving MICRO & SMB clients - as an innovative add-on to existingonline banking. CashDirector application is based on AI accounting robot technology, allowing business transactions & bank operations to be booked in real time. According to a US Bank report over 80% of SMB failures are due to poor cash management. CashDirector solve this problem, helping SMBs manage cash flow and payments directly from their online bank accounts, thus creating a long-term relationship with the bank and building their loyalty. | $2.9M / Series A / May 08, 2020 | ||
| Sinterit is the company based in Kraków (Poland) that specializes in development of SLS 3d printers. It has been found in 2014. Sinterit’s mission is to build professional and affordable 3d printer in SLS (Selective Laser Sintering) technology. SLS technology is the next step in 3d printing: it makes possible to print objects that are difficult orimpossible to be printed in FDM (Fused Deposition Modeling) technique – the most popular technology in 3d printing market. Currently Sinterit ships Lisa all over the world. | $2.5M / Series B / Feb 26, 2020 | ||
| Docurated offers the fastest and simplest way for sales and marketing teams to find and use content. | $3.8M / Series A / Feb 06, 2014 | ||
| See all 5 investments → | |||
About EEC Ventures
EEC Ventures is a venture capital company specializing in utilities, energy, environment, sustainable, and advanced materials sectors. The company provides IT solutions for artificial intelligence, industrial cybersecurity, blockchain, and big data. It also provides target companies with both early-stage and growth/expansion capital financing.They create value using sustainable resources, lower the environmental burden or provide higher efficiency in the utilization of traditional resources. The company should provide the market with services and products that respond to the following global trends such as natural resources reduction, upgrade of utility infrastructure, steady energy demand increase, reduction of CO2 emissions, and reduction in wastes generation.EEC Ventures was founded in 2012 and is headquartered in Warsaw, Poland.
EEC Ventures Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Konrad Sitnik
Co-founder & Partner
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Rafal Malecki
Co-founder and Partner
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Michał Lasocki
Partner
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Voytek Siewierski
Partner
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FAQ
What does Voytek Siewierski invest in?
Voytek Siewierski invests primarily in Software, Machine Learning and Enterprise Software startups, most often at Series A and Seed stage. Most of the 5 investments tracked by Shizune back companies in Poland. The Investment Focus section breaks down every industry, stage and country in the portfolio.
How do I contact Voytek Siewierski?
Public channels for Voytek Siewierski 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 Voytek Siewierski last invest?
The most recent investment recorded for Voytek Siewierski closed in Jun 2022. Shizune tracks 5 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 Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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