Mariusz Gralewski
Angel Investor
Warsaw, Poland
Mariusz Gralewski is a seed investor in Warsaw focused on Internet and Software. Mariusz Gralewski is the Co-Founder and Co-Chief Executive Officer of ZnanyLekarz. Mariusz Gralewski attended the Warsaw University of Technology.
- Total investments:
- 11
- Last investment:
- Lead investor:
- 9%
Last updated:
For AI agents: llms.txt
Industries Mariusz Gralewski invests in
Stages Mariusz Gralewski invests in
Countries Mariusz Gralewski invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $127k–$4M
Investment Focus
Industry
- Internet 3 (27%)
- Software 3 (27%)
- Education 3 (27%)
- EdTech 2 (18%)
- E-Commerce 2 (18%)
Stage
- Seed 9 (82%)
- Series A 1 (9%)
Country
- Poland 5 (45%)
- Spain 1 (9%)
- France 1 (9%)
- Austria 1 (9%)
- United States 1 (9%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| FunVenture is a polish developer company that specializes in pixel art RPG adventures. | $1M / Seed / Aug 07, 2026 | ||
| AlohaCamp is an online booking portal for adventure travel. They offer tent, campervan, glamping, and cottage sites. It provides a referral program. | Seed / Oct 14, 2022 | ||
| Preply is a provider of an online tutoring marketplace intended to promote faster learning with one-on-one online tutors. The company's marketplace helps to find and book professional private tutors online from over 185 countries, enabling users to achieve their goals and speak confidently. | $4M / Seed / Jul 24, 2018 | ||
| StarOfService is a home service marketplace to improve access to services for individuals. They provide information and enable the hiring of photographers, tutors, contractors, legal workers, animal care providers, and event organizers. | $10M / Series A / Sep 19, 2016 | ||
| Preply is a provider of an online tutoring marketplace intended to promote faster learning with one-on-one online tutors. The company's marketplace helps to find and book professional private tutors online from over 185 countries, enabling users to achieve their goals and speak confidently. | $1.3M / Seed / Jun 07, 2016 | ||
| Eversports vision is to simplify the access to sport facilities in your environment. They thrive to build a unique community of sporters and to share their passion around the globe. Eversports connects its members directly with sport venues, helps them to book courts or courses and to meet sport partners. With Eversports you know exactly where andwhen to practice your favourite sport. Find all the information you need in one single interface. Eversports is the marketplace where sport providers and sporters get easily connected. | $890.6K / Seed / May 31, 2016 | ||
| Deskbookers is an online platform for businesses and individuals to find flexible space... offices, meeting and training rooms and flex desks. The company is based in Amsterdam, the Netherlands. The site is currently available in Dutch, German, and English. | $1.6M / Seed / Dec 01, 2015 | ||
| Typeform is a no-code SaaS platform with thoughtfully-designed tools that help companies grow their business by engaging with their audience. Offering people-friendly forms, quizzes, surveys, and asynchronous video solutions, Typeform turns digital interactions into human connection. Launched in 2012, Typeform drives more than 500 million digitalinteractions per year and integrates with hundreds of other business-critical tools like HubSpot, Calendly, and Slack, to name a few. Typeform is headquartered in Barcelona, Spain with an office in San Francisco, California, and has a globally-distributed workforce of over 450 people. | $1.3M / Seed / Sep 23, 2014 | ||
| Skubacz.pl Sp. z o.o. operates an online platform, Restaumatic, that offers food ordering and delivery services. | $127K / Seed / Oct 25, 2012 | ||
| Brainly is an online learning platform where students and parents get homework and study help from peers and experts.With the platform and its group of websites and apps, middle school and high school students are given the opportunity to ask questions freely to the online community comprised of students, parents, and teachers. The software isdeveloped with a mission to help students gain the confidence that comes from helping others and inspire them to learn in a collaborative community. Brainly is backed by Naspers, Kulczyk Investments, General Catalyst Partners, Point Nine Capital, Runa Capital, and Learn Capital.In 2009, Lukasz Haluch, Michał Borkowski, and Tomasz Kraus co-founded the company in Kraków, Malopolskie, Poland and is available in 35 countries. | $500K / Seed / Sep 13, 2012 | ||
| See all 11 investments → | |||
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FAQ
What does Mariusz Gralewski invest in?
Mariusz Gralewski invests primarily in Internet, Software and Education startups, most often at Seed and Series A stage. Most of the 11 investments tracked by Shizune back companies in Poland. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Mariusz Gralewski's check size?
Mariusz Gralewski typically joins rounds of $127k–$4M at Seed. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Mariusz Gralewski participates in.
How do I contact Mariusz Gralewski?
Public channels for Mariusz Gralewski include LinkedIn, X (Twitter) and Facebook. 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 Mariusz Gralewski last invest?
The most recent investment recorded for Mariusz Gralewski closed in Aug 2026. Shizune tracks 11 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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