Borys Musielak
Co-Founder @ ReaktorX
Warsaw, Poland
Borys Musielak is a seed investor at ReaktorX in Warsaw focused on Software and Artificial Intelligence. Borys is a founding partner at SMOK Ventures, a VC fund bridging Silicon Valley to Poland and CEE.Previously he co-founded Filmaster, a personalization service acquired in 2015 by Samba TV where he is currently building the European branch.He also runs ReaktorWarsaw, a hub for startups to work, collaborate and network, and co-founded StartupPoland, a foundation that became a voice of Polish startups.Prior to founding his own projects, Borys worked as a consultant, programmer and team lead for both for startups and large corporations in Poland (empolis, eo Networks), Germany (CoCoNet) and United Kingdom (Rule Financial, Deutsche Bank).He graduated with distinction at Polish-Japanese Institute of Information Technology with a degree in software engineering.Listed as one of 50 most creative Polish entrepreneurs by BRIEF. Mentor at Founder Institute Warsaw. Film buff. Thibodeau-era Bulls fanboy.
- Total investments:
- 22
- Last investment:
- Lead investor:
- 82%
Last updated:
For AI agents: llms.txt
Industries Borys Musielak invests in
Stages Borys Musielak invests in
Countries Borys Musielak invests in
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Investment Focus
Industry
- Software 7 (32%)
- Artificial Intelligence 5 (23%)
- Information Technology 3 (14%)
- Apps 2 (9%)
- SaaS 2 (9%)
Stage
- Seed 10 (45%)
- Pre-Seed 8 (36%)
- Venture - Series Unknown 1 (5%)
Country
- Poland 8 (36%)
- United States 4 (18%)
- Latvia 1 (5%)
- Sweden 1 (5%)
- Estonia 1 (5%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Primio
|
Primio is an AI-powered platform that generates production-ready native mobile apps from natural language prompts. It outputs real Flutter/Dart code that compiles to native iOS and Android with pixel-perfect rendering and up to 120fps performance. The platform covers the full lifecycle from idea to app store submission, including cloud builds,live preview, and iterative editing. Built for app studios and serious builders who need to ship native apps fast. | Pre-Seed / Apr 01, 2026 | |
Mos Health
|
Mos Health creates a digital health platform that blends an AI-powered application with its own line of supplements. The Health platform uses artificial intelligence to create personalized health recommendations, supplement routines, and wellness advice as per the individual patient. | $1.1M / Pre-Seed / Jan 30, 2026 | |
Juo
|
Juo builds the future of subscription technology. | $4.6M / Seed / Nov 25, 2025 | |
Proteine Resources
|
Proteine Resources is pioneering the world’s first fully autonomous, AI-managed system that transforms mushroom side-streams into premium functional ingredients for pets. Our solution is the only alternative protein proven to be both highly palatable for cats and nutritionally equivalent to beef (1:1 profile), while operating within a circular,zero-waste model.With one innovation, we address two global challenges:--> Food Industry Waste: repurposing 6.5M tonnes of mushroom by-products generated annually in the EU alone. --> Pet Health & Nutrition: combating gastrointestinal and other health issues caused by low-quality pet food ingredients.Recognized for our breakthrough, we are proud participants in EIT FAN (Circular Economy Hub, Helsinki) and awardees of the prestigious EIC Accelerator (EUR 9.5M in blended financing).Operating as a B2B company, Proteine Resources supplies high-performance ingredients and private-label recipes to pet food brands and manufacturers. We target the premium and veterinary pet food segments—a market worth EUR 15B+ in the EU and US—riding the powerful trend of pet humanization, strongly correlated with declining fertility rates and rising living standards across developed markets. | $11M / Venture - Series Unknown / Jun 24, 2025 | |
Darvin
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Darvin provides platform leveraging AI to help mobile developers build and deploy apps for app stores more quickly and efficiently. | Seed / Apr 24, 2025 | |
|
Darvin
|
Darvin provides platform leveraging AI to help mobile developers build and deploy apps for app stores more quickly and efficiently. | Pre-Seed / Apr 24, 2025 | |
LetsData
|
LetsData is an AI-power radar against disinformation. LetsData provides real-time media and social media monitoring in over 50 countries, empowering state agencies, businesses, and civil societies to proactively navigate risks and seize opportunities in the face of disinformation. | $1.6M / Pre-Seed / Jan 15, 2025 | |
|
Proteine Resources
|
Proteine Resources is pioneering the world’s first fully autonomous, AI-managed system that transforms mushroom side-streams into premium functional ingredients for pets. Our solution is the only alternative protein proven to be both highly palatable for cats and nutritionally equivalent to beef (1:1 profile), while operating within a circular,zero-waste model.With one innovation, we address two global challenges:--> Food Industry Waste: repurposing 6.5M tonnes of mushroom by-products generated annually in the EU alone. --> Pet Health & Nutrition: combating gastrointestinal and other health issues caused by low-quality pet food ingredients.Recognized for our breakthrough, we are proud participants in EIT FAN (Circular Economy Hub, Helsinki) and awardees of the prestigious EIC Accelerator (EUR 9.5M in blended financing).Operating as a B2B company, Proteine Resources supplies high-performance ingredients and private-label recipes to pet food brands and manufacturers. We target the premium and veterinary pet food segments—a market worth EUR 15B+ in the EU and US—riding the powerful trend of pet humanization, strongly correlated with declining fertility rates and rising living standards across developed markets. | $1.5M / Venture - Series Unknown / Oct 01, 2024 | |
|
Juo
|
Juo builds the future of subscription technology. | Seed / Aug 20, 2024 | |
Fams
|
Supportive family relationship co-pilot.Edutainment parenting app for building conscious relationships in familiesAny situations under your conscious control with Fams. Learn how to react in a healthy way without negative effects, no matter what. Fams support you in a vital journey to archiving parenting skills & dream goals throughpersonal step-by-step programs in a playful way: interactive comics-stories based on daily-life family situations.https://drive.google.com/file/d/1_Y8NZ6rJRMQRtjbt8JR5WF89rmo6WWlf/view | $400K / Pre-Seed / Feb 26, 2024 | |
| See all 22 investments → | |||
Co-Investors
About ReaktorX
ReaktorX is a pre-acceleration program for early stage businesses. ReaktorX serves as a business accelerator for people who are working or have no time or acumen for creating a business from scratch and want to connect with like-minded professionals.
ReaktorX Contacts
| Name | Phone | Socials | |
|---|---|---|---|
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Borys Musielak
Co-Founder
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FAQ
What does Borys Musielak invest in?
Borys Musielak invests primarily in Software, Artificial Intelligence and Information Technology startups, most often at Seed and Pre-Seed stage. Most of the 22 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 Borys Musielak?
Public channels for Borys Musielak include LinkedIn, X (Twitter) and the website linked on this profile. 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 Borys Musielak last invest?
The most recent investment recorded for Borys Musielak closed in Apr 2026. Shizune tracks 22 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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