# Martin Tajur

> Martin Tajur is a pre-seed investor at Pipedrive backing Software and Artificial Intelligence. See 16 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Pipedrive](https://shizune.co/investors/profile/pipedrive)
- Location: Tallinn, Estonia
- Total investments: 16
- Last investment: Apr 2022
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: http://www.linkedin.com/in/martintajur
- X (Twitter): http://twitter.com/tajur
- Website: https://x.com/tajur
- Facebook: http://www.facebook.com/martin.tajur

Martin Tajur is a pre-seed investor at Pipedrive in Tallinn focused on Software and Artificial Intelligence. Martin Tajur is the co-founder of Pipedrive.

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $800k–$2.7M |
| Angel | $136k–$566k |
| Pre-Seed | $401k–$2M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 5 | 31% |
| Artificial Intelligence | 4 | 25% |
| SaaS | 3 | 19% |
| Construction | 3 | 19% |
| Hardware | 2 | 13% |

49 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Pre-Seed | 6 | 38% |
| Seed | 4 | 25% |
| Angel | 4 | 25% |
| Convertible Note | 1 | 6% |

### Country

| Country | Investments | Share |
| --- | --- | --- |
| Estonia | 10 | 63% |
| Poland | 1 | 6% |
| Ukraine | 1 | 6% |
| United States | 1 | 6% |
| United Kingdom | 1 | 6% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| YuMuuv | YuMuuv is an employee wellness platform that uses science-based formulas to capture data and keeps track of physical activity & leaderboard. | $135.6K | Angel | Apr 20, 2022 |  |
| Shen.AI | Shen.AI turns any camera into a clinical-grade health monitor. Our AI SDK captures multimodal biosignals from a 30-second face scan and returns 30+ vital signs and risk indices (e.g., BP, HR, HRV, breathing rate, BMI), on-device, no hardware or cloud required. We ship a plug-and-play SDK that integrates in a day across mobile, web, and IoT;wellness today. Customers use us for virtual triage, remote monitoring, chronic care, and engagement. | $2M | Seed | Feb 25, 2022 |  |
| SegmentStream | At SegmentStream we partner with growth leaders to drive more revenue from paid media through full-funnel attribution, incrementality measurement and automated cross-channel budget allocation powered by predictive AI. | $2.7M | Seed | Feb 04, 2022 |  |
| Wisnio | Great things in business are never done by one person, but by high-performing teams.Teamscope was founded by leading executive search professionals, data scientists, and tech entrepreneurs to help managers make better hiring decisions and build more engaged, high-performing teams.The teamscope platform combines big data analytics withscientific testing to analyze teams and help team leaders make better hiring decisions. Our unique algorithm analyzes the values, personality characteristics, and core competencies of team members to first profile the existing team. Based on that, the platform recommends what characteristics to look for in a candidate and evaluates how well each candidate fits in with the role and the team. The platform then generates a detailed behavioral profile and interview guide for each candidate to help the hiring manager choose the best person for the team. | $1.8M | Convertible Note | Dec 01, 2021 |  |
| GScan | GScan is leading a radical shift to safe, accurate, and automatic 'x-ray' technology using natural cosmic radiation, called muons. The ability to scan safely any objects and detect their chemical composition will change how 'scanning of anything' happens. GScan's MuonFLUX product is able to see deep into reinforcedconcrete, providing valuable information which helps to: (i) avoid the collapse of at-risk infrastructure (bridges, buildings, etc), (ii) extend significantly infrastructure life cycle (without increasing the risk levels), (iii) drastically reduce the maintenance and renovation budgets by identifying only the critical places for repair, (iv) decarbonise the concrete & cement industry (one of the highest-emitting and hard to decarbonise industries, accounting for ~10% of global CO2 emissions). Year 2023 GScan delivered its first commercial projects and earned the revenue of €1.5M. | $566K | Angel | Nov 26, 2021 |  |
| YuMuuv | YuMuuv is an employee wellness platform that uses science-based formulas to capture data and keeps track of physical activity & leaderboard. | $146.5K | Angel | Sep 21, 2021 |  |
| Bisly | Bisly is an Estonian startup developing intelligent building solutions. | $2M | Seed | Jul 21, 2021 |  |
| Corner Renovation | With Corner, homeowners get access to pre-designed home renovation kits at a fixed price. Corner connects consumers with vetted interior designers and enables everyone to build hyper-personalized kitchens and bathrooms. Its mission is to eliminate the middleman and make it easier for people to access high-end home renovation. | $450K | Pre-Seed | Jan 28, 2021 |  |
| Hirio | Hirio develops an online tool using artificial intelligence to automate recruiting a large number of employees. It provides a digital platform to lessen repetitive work, organize candidate information, and filter qualifications per job. Hirio was founded in 2020 and is based in Kyiv, Ukraine. | $400.7K | Pre-Seed | Jan 25, 2021 |  |
| Vok Bikes | We build heavy-duty cargo bikes and rent them out to on-demand delivery companies and their couriers — no surprises, no extra fees. Currently active in Tallinn and Vilnius and expanding to London and Berlin Q4 2021. | $971.2K | Pre-Seed | Jan 19, 2021 |  |

10 of 16 investments shown.

## Co-investors
- [SMOK Ventures](https://shizune.co/investors/profile/smok-ventures) — VC Fund, 4 deals together
- [Atomico's Angel Programme](https://shizune.co/investors/profile/atomico-s-angel-program) — VC Fund, 2 deals together
- [Excellent Business Solutions](https://shizune.co/investors/profile/excellent-business-solutions) — VC Fund, 2 deals together
- [Lemonade Stand](https://shizune.co/investors/profile/lemonade-stand-19b2) — VC Fund, 2 deals together
- [Silberauto](https://shizune.co/investors/profile/silberauto) — VC Fund, 2 deals together
- [Verge HealthTech Fund](https://shizune.co/investors/profile/verge-healthtech-fund) — VC Fund, 2 deals together

## About Pipedrive

VC Fund · New York, United States

Founded in 2010, Pipedrive is the global sales-first CRM and intelligent revenue platform for small businesses. Today, Pipedrive is helping more than 100,000 sales teams worldwide to get more qualified leads, close deals faster, and grow their revenue.

5 contacts available at Pipedrive.

| Name | Title | Profile |
| --- | --- | --- |
| Martin Henk | Co-Founder | https://shizune.co/investors/profile/martin-henk |
| Martin Tajur | Co-Founder | https://shizune.co/investors/profile/martin-tajur |
| Peter Harris | Chief Operating Officer | https://shizune.co/investors/profile/peter-harris-12dc |
| Timo Rein | Co-Founder | https://shizune.co/investors/profile/timo-rein |
| Agur Jõgi | Chief Technology Officer (CTO) | https://shizune.co/investors/profile/agur-j%C3%B5gi |

## Similar investors

### Similar industry
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund
- [Right Side Capital Management](https://shizune.co/investors/profile/right-side-capital-management) — VC Fund

### Similar stage
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [Right Side Capital Management](https://shizune.co/investors/profile/right-side-capital-management) — VC Fund
- [Everywhere Ventures](https://shizune.co/investors/profile/everywhere-ventures) — VC Fund

### Similar country
- [Specialist VC](https://shizune.co/investors/profile/united-angels-vc) — VC Fund
- [Superangel](https://shizune.co/investors/profile/superangel) — VC Fund
- [Tera Ventures](https://shizune.co/investors/profile/tera-ventures) — VC Fund

## Featured in investor lists
- [All Investors in Estonia](https://shizune.co/investors/investors-estonia)
- [All Angel Investors in Estonia](https://shizune.co/investors/angel-investors-estonia)
- [Software Investors in Estonia](https://shizune.co/investors/software-investors-estonia)
- [Software Angel Investors in Estonia](https://shizune.co/investors/software-angel-investors-estonia)
- [SaaS Investors in Estonia](https://shizune.co/investors/saas-investors-estonia)
- [Enterprise Angel Investors in Estonia](https://shizune.co/investors/enterprise-angel-investors-estonia)

## FAQ

### What does Martin Tajur invest in?

Martin Tajur invests primarily in Software, Artificial Intelligence and SaaS startups, most often at Pre-Seed and Seed stage. Most of the 16 investments tracked by Shizune back companies in Estonia. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is Martin Tajur's check size?

Martin Tajur typically joins rounds of $800k–$2.7M at Seed, $136k–$566k at Angel and $401k–$2M at Pre-Seed. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Martin Tajur participates in.

### When did Martin Tajur last invest?

The most recent investment recorded for Martin Tajur closed in Apr 2022. Shizune tracks 16 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 Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

# About Shizune
Shizune.co is an investor database. Core features:
- 48,091 startup investors (angels, VCs, accelerators, and others)
- Email, phone, LinkedIn (for intros), socials, and other contact data
- Updated daily from public funding news
- CSV and Excel export

The User can access the full database FOR FREE after signing up: shizune.co