Martin Kesner
Partner @ J&T Ventures
Prague, Czech Republic
Martin Kesner is a seed investor at J&T Ventures in Prague focused on Enterprise Software and Software. Martin Kesner - Partner @ J&T Ventures
- Total investments:
- 12
- Last investment:
- Lead investor:
- 83%
Last updated:
For AI agents: llms.txt
Industries Martin Kesner invests in
Stages Martin Kesner invests in
Countries Martin Kesner invests in
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Investment Focus
Industry
- Enterprise Software 5 (42%)
- Software 4 (33%)
- Information Technology 3 (25%)
- Artificial Intelligence 3 (25%)
- SaaS 2 (17%)
Stage
- Seed 8 (67%)
- Venture - Series Unknown 2 (17%)
- Pre-Seed 1 (8%)
- Series A 1 (8%)
Country
- Czech Republic 5 (42%)
- Slovakia (Slovak Republic) 2 (17%)
- Germany 1 (8%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Wultra provides easy-to-deploy post-quantum authentication solutions for financial institutions, ensuring secure and seamless access to digital services. Our developer-friendly technology, powered by NIST-endorsed quantum-resistant cryptography, delivers bulletproof security, a passwordless user experience, and compliance with global regulations —all deployable in just 8 weeks. Trusted by financial institutions worldwide, Wultra’s solutions meet stringent standards like PSD3/PSR1 and eIDAS 2.0 while offering cutting-edge protection against evolving cyber threats. | $7.8M / Series A / Jun 29, 2026 | ||
| Definic is a software platform that helps enterprises manage IT services procurement by bringing vendor sourcing, evaluation, benchmarking, and performance management into a single system. The platform enables organizations to define project requirements, create structured requests for proposals (RFPs), compare vendors using project and marketdata, and oversee vendor relationships throughout the delivery process. It provides visibility into IT spending, supplier activity, contracts, and procurement workflows through centralized dashboards and reporting tools. Definic also offers benchmarking capabilities that allow companies to assess vendor rates, capabilities, and performance against broader market data. By consolidating procurement and vendor management activities, the platform supports more informed decision-making for technology sourcing and external service engagements. | $2.9M / Seed / Jun 12, 2026 | ||
| Definic is a software platform that helps enterprises manage IT services procurement by bringing vendor sourcing, evaluation, benchmarking, and performance management into a single system. The platform enables organizations to define project requirements, create structured requests for proposals (RFPs), compare vendors using project and marketdata, and oversee vendor relationships throughout the delivery process. It provides visibility into IT spending, supplier activity, contracts, and procurement workflows through centralized dashboards and reporting tools. Definic also offers benchmarking capabilities that allow companies to assess vendor rates, capabilities, and performance against broader market data. By consolidating procurement and vendor management activities, the platform supports more informed decision-making for technology sourcing and external service engagements. | $2.9M / Seed / Jun 12, 2026 | ||
| Apify is a web scraping and automation platform that can extract structured data from any website or automate any workflow on the web. For example, imagine you found a website selling shoes and want to get a spreadsheet with all the shoe sizes, colors, prices, etc., but the website doesn't make that information accessible in tabular form. Youcould certainly manually create such a spreadsheet using copy and paste, but that would take a lot of time and cause a lot of frustration. Or you can set up Apify to do this for you in a few seconds. Moreover, Apify can automatically upload the spreadsheet into your CRM every night or send you an email when your favorite shoes are on sale. The possibilities are unlimited. | $3M / Venture - Series Unknown / Apr 15, 2024 | ||
| SENSE ARENA is headquartered in Prague, Czech Republic, and has North American offices in Woburn, Mass, and Whitby, Ontario. The company is the world leader in Virtual Reality training for Hockey with over 10,000 installations in 42 countries. The platform contains a module for skaters and a module for goalies, both created by hockey professionalsand configurable for all ages and levels. Sport number two will be launched in the second half of 2022 together with a unique community world connecting active athletes and fans in metavrese. | $3M / Venture - Series Unknown / May 16, 2022 | ||
| Sharry is a smart access platform for A-class office buildings. Its solution combines smart access (including mobile access, dynamic parking, and elevator control) with a visitor management system and tenant engagement features to provide the best-in-class building experience for the tenants. Sharry simplifies administration for managers and helpsretain current tenants and attract new ones. The touch-free solution, flexible operation tools, and building data insights gain a new significance in the Post-COVID property design and hybrid work style. The mission of Sharry is to turn any building into a premium service. | $3.4M / Seed / Jan 24, 2022 | ||
| Wultra provides easy-to-deploy post-quantum authentication solutions for financial institutions, ensuring secure and seamless access to digital services. Our developer-friendly technology, powered by NIST-endorsed quantum-resistant cryptography, delivers bulletproof security, a passwordless user experience, and compliance with global regulations —all deployable in just 8 weeks. Trusted by financial institutions worldwide, Wultra’s solutions meet stringent standards like PSD3/PSR1 and eIDAS 2.0 while offering cutting-edge protection against evolving cyber threats. | $1.1M / Seed / Dec 01, 2021 | ||
| Employee relationship management and office management and collaboration software. Simplify collaboration between company and employees. Struggling with your monster enterprise software? Well try Aptien. Keep your backoffice information as simple as possible. With Onesoft you can do it lightweight, flexible, simple, today. It is extremely scalableand flexible software for HR management, asset management, projects and everything what happened around people in companies. You can adjust whole system for their needs within minutes, not weeks. Is adjustable as simple as spreadsheet. | $944.9K / Pre-Seed / Jul 15, 2021 | ||
Live Penalty
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Live Penalty connect the club´s most valuable physical assets with new digital markets to grow their fan base and sales. | $2.4M / Seed / Dec 11, 2020 | |
| Locco is a workspace concept that partners with vibrant cafes to provide convenient yet flexible workspace to boost your productivity. | Seed / Mar 30, 2018 | ||
| See all 12 investments → | |||
Co-Investors
About J&T Ventures
J&T Ventures is an early-stage Prague-based Venture Capital fund, which invests in promising startups from the CEE and SEE region. Our strategy is industry agnostic, but we primarily focus on companies in the seed stage with proven product market fit. Our average ticket size is between EUR 0.5m - EUR 2.5m.
J&T Ventures Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Adam Kocik
Managing Partner
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Kurt Chen
Advisor
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Martin Kesner
Partner
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Annette Lovasova
Operations Manager
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David Polach
Principal
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FAQ
What does Martin Kesner invest in?
Martin Kesner invests primarily in Enterprise Software, Software and Information Technology startups, most often at Seed and Venture - Series Unknown stage. Most of the 12 investments tracked by Shizune back companies in Czech Republic. The Investment Focus section breaks down every industry, stage and country in the portfolio.
How do I contact Martin Kesner?
Public channels for Martin Kesner 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 Martin Kesner last invest?
The most recent investment recorded for Martin Kesner closed in Jun 2026. Shizune tracks 12 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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