StartupBlink

37 Top startups in Rijeka for July 2026

We rank Alarm automatika, WhoAPI and IE-Energy in Rijeka along with 34 other startups based on an algorithm that scores startups based on total investment, employee count, and quarterly website traffic. Rijeka startup ecosystem ranks #633 globally and #2 in Croatia.

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Best Startups in Rijeka for 2026

1st
Alarm automatika logo
Alarm automatikaSB Score: 301

An exceptional range of equipment, services and software enables Alarm automatika to provide everything needed for implementation of functional, remote-controlled security solutions for installations of all sizes and purposes.

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Website
www.alarmautomatika.com/en
Employee range
1 – 10
Web Traffic (Monthly)
Funding amount
$2.5M
National Rank(Croatia)
Regional Rank(Eastern Europe)
Global Rank(Worldwide)
2nd
WhoAPI logo
WhoAPISB Score: 276

Providing extensive domain data on a massive scale via the API. Structured whois, domain availability, ranks, DNS checks, server uptime from all our world wide nodes and many more valuable data. WhoAPI is great for automated 'domain details' requests on a massive scale.

View Full Page
Website
whoapi.com
Employee range
11 – 50
Web Traffic (Monthly)
Funding amount
$250K
National Rank(Croatia)
Regional Rank(Eastern Europe)
Global Rank(Worldwide)
3rd
IE-Energy logo
IE-EnergySB Score: 252

HELIOS® helps developing athletes and teams get better faster. Using our AI wearable sensor and app, anyone can take control of their development bringing the previously unseen to light through automated video highlights, individualized feedback and gamification. Our sensor-to-cloud platform delivers pro-level analytics and video highlights to power the next generation of athlete development. We are an MIT-founded technology company backed by leaders in sports and technology including NHL Hall of Famer, 2x Stanley Cup Champion and Seattle Kraken GM, Ron Francis.

View Full Page
Website
ie-energy.hr
Employee range
11 – 50
Web Traffic (Monthly)
Funding amount
$3.9M
National Rank(Croatia)
Regional Rank(Eastern Europe)
Global Rank(Worldwide)
4th
Gamio.GG logo
Gamio.GGSB Score: 240

Gamio is a revolutionary gaming platform that amplifies engagement for streamers, viewers, and gamers by transforming everyday gameplay into exciting challenges and real-time predictions, adding a layer of meaning and rewards to every gaming session.

View Full Page
Website
gamio.gg
Employee range
11 – 50
Web Traffic (Monthly)
Funding amount
$753.4K
National Rank(Croatia)
Regional Rank(Eastern Europe)
Global Rank(Worldwide)
5th
Renergo logo
RenergoSB Score: 208

eSecure Systems, LLC provides affordable, trusted solutions that secure digital identities and information for consumers, enterprises and governments. The Company's software and associated services enable businesses and governments around the world to conduct high-value, highly sensitive transactions, over wired and wireless networks including the Internet, in compliance with today’s regulatory guidelines. The Company’s strategy consists of two primary pillars — to help secure information and identities and enable security-conscious enterprises and governments to implement efficient, cost-effective and interoperable solutions that stimulate revenue, mitigate risk, secure information and protect end-users.

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Website
renergo.eu
Employee range
11 – 50
Web Traffic (Monthly)
Funding amount
$250K
National Rank(Croatia)
Regional Rank(Eastern Europe)
Global Rank(Worldwide)
6th
JGL  logo
JGL SB Score: 198

We offer distribution and licensing business models for JGL's product portfolio in the cough and cold, ophthalmology and dermatology segments. With more than a thousand employees, the JGL Group today operates in a total of 60 markets worldwide. In our plans for the future, we are focused on sustainable and long-term growth.

View Full Page
Website
www.jgl.eu
Employee range
1,001 – 5,000
Web Traffic (Monthly)
Funding amount
National Rank(Croatia)
Regional Rank(Eastern Europe)
Global Rank(Worldwide)
7th
Aestus logo
AestusSB Score: 176

Aestus is a fast-growing Croatia-based accounting services and consulting firm that empowers Croatian entrepreneurs—from startups to established SMEs and even public-sector clients—to actualize business ideas at every development stage. Core service offerings include: Accounting & Bookkeeping: Full-spectrum support spanning payroll, tax advisory and digital financial reports—enhanced by their proprietary Parra app enabling real-time financial tracking and invoicing. Financing Sources: Assisting clients in securing financing and grant funding by connecting them to banks and public funds . Advisory & Consulting: Delivering transaction, investment, M&A, concession advisory, and managing EU-funded projects totaling approximately €60 million (approx. €50 million private + €10 million public sector) . Entrepreneur Support: Helping first-time business owners with setup, self-employment incentives, and early-stage consulting . Aestus also offers Parra, a free digital app for clients to conveniently issue invoices, monitor cash flow, access document archives, track payroll, and manage fixed assets—used by over 700 micro and small businesses across Croatia. The firm positions itself as a proactive business partner focused on client success, innovation, transparency, and integrity. With a vibrant, collaborative team culture —and modern office amenities like a gym and pet-friendly environment—we earned accolades from over 1,000 entrepreneurs for delivering personalized, responsive, and technologically enhanced services.

View Full Page
Website
aestus.hr
Employee range
51 – 100
Web Traffic (Monthly)
Funding amount
National Rank(Croatia)
Regional Rank(Eastern Europe)
Global Rank(Worldwide)
8th
Geotech logo
GeotechSB Score: 152

Quality geotechnical investigation and testing and geotechnical reports are a precondition for the development of ideas about a new project. Implementation of intensive field and laboratory testings is necessary to obtain the input data of soil layers, capacity, settlement, categorization, and quality of materials.

View Full Page
Website
www.geotech.hr/en
Employee range
11 – 50
Web Traffic (Monthly)
Funding amount
National Rank(Croatia)
Regional Rank(Eastern Europe)
Global Rank(Worldwide)
9th
E-glas logo
E-glasSB Score: 121

Empowering individuals with disabilities through innovative technology, our startup enables independence and learning for children and adults.

View Full Page
Website
www.eglas.hr
Employee range
51 – 100
Web Traffic (Monthly)
Funding amount
National Rank(Croatia)
Regional Rank(Eastern Europe)
Global Rank(Worldwide)
10th
CampMap logo
CampMapSB Score: 120

Netokracija is the leading regional online magazine and blog dedicated to online business, marketing, culture and media. On Netokracija one will find exclusive news like the first display of innovative Internet projects collectives, Iskon.TV's and Voxija, and announcements of the arrival of global brands such as PayPal or key technological innovations like the iPad. In addition to dealing with the news and detailed reviews, Netokracija provides tips and analysis of the Internet market.

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Website
www.netokracija.com/campmap-aplikacija-za-kampiranje-simon-neal-188681
Employee range
Web Traffic (Monthly)
Funding amount
National Rank(Croatia)
Regional Rank(Eastern Europe)
Global Rank(Worldwide)
11th
Cateia Games logo
Cateia GamesSB Score: 111

Cateia Games is a development and publishing studio specializing in high-quality video games for various platforms. With a global reach in over 15 languages, they have created and released numerous titles for PC, Mac, iOS, Android, and Windows Store.

View Full Page
Website
www.cateia.com
Employee range
101 – 250
Web Traffic (Monthly)
Funding amount
National Rank(Croatia)
Regional Rank(Eastern Europe)
Global Rank(Worldwide)

Total amount:20

Most Funded Startups in Rijeka for 2026

The top three most funded startups in Rijeka have raised total funding of more than USD 7.19M. IE-Energy has 0.57% more funding than Alarm automatika.
1st
IE-Energy logo
IE-EnergySB Score: 252

HELIOS® helps developing athletes and teams get better faster. Using our AI wearable sensor and app, anyone can take control of their development bringing the previously unseen to light through automated video highlights, individualized feedback and gamification. Our sensor-to-cloud platform delivers pro-level analytics and video highlights to power the next generation of athlete development. We are an MIT-founded technology company backed by leaders in sports and technology including NHL Hall of Famer, 2x Stanley Cup Champion and Seattle Kraken GM, Ron Francis.

View Full Page
Website
ie-energy.hr
Employee range
11 – 50
Web Traffic (Monthly)
Funding amount
$3.9M
National Rank(Croatia)
Regional Rank(Eastern Europe)
Global Rank(Worldwide)
2nd
Alarm automatika logo
Alarm automatikaSB Score: 301

An exceptional range of equipment, services and software enables Alarm automatika to provide everything needed for implementation of functional, remote-controlled security solutions for installations of all sizes and purposes.

View Full Page
Website
www.alarmautomatika.com/en
Employee range
1 – 10
Web Traffic (Monthly)
Funding amount
$2.5M
National Rank(Croatia)
Regional Rank(Eastern Europe)
Global Rank(Worldwide)
3rd
Gamio.GG logo
Gamio.GGSB Score: 240

Gamio is a revolutionary gaming platform that amplifies engagement for streamers, viewers, and gamers by transforming everyday gameplay into exciting challenges and real-time predictions, adding a layer of meaning and rewards to every gaming session.

View Full Page
Website
gamio.gg
Employee range
11 – 50
Web Traffic (Monthly)
Funding amount
$753.4K
National Rank(Croatia)
Regional Rank(Eastern Europe)
Global Rank(Worldwide)

Total amount:20

Top Hiring Startups in Rijeka by Employee Number

The top three hiring startups in Rijeka have an median employee size that is between [101-250]
1st
JGL  logo
JGL SB Score: 198

We offer distribution and licensing business models for JGL's product portfolio in the cough and cold, ophthalmology and dermatology segments. With more than a thousand employees, the JGL Group today operates in a total of 60 markets worldwide. In our plans for the future, we are focused on sustainable and long-term growth.

View Full Page
Website
www.jgl.eu
Employee range
1,001 – 5,000
Web Traffic (Monthly)
Funding amount
National Rank(Croatia)
Regional Rank(Eastern Europe)
Global Rank(Worldwide)
2nd
Cateia Games logo
Cateia GamesSB Score: 111

Cateia Games is a development and publishing studio specializing in high-quality video games for various platforms. With a global reach in over 15 languages, they have created and released numerous titles for PC, Mac, iOS, Android, and Windows Store.

View Full Page
Website
www.cateia.com
Employee range
101 – 250
Web Traffic (Monthly)
Funding amount
National Rank(Croatia)
Regional Rank(Eastern Europe)
Global Rank(Worldwide)
3rd
Aestus logo
AestusSB Score: 176

Aestus is a fast-growing Croatia-based accounting services and consulting firm that empowers Croatian entrepreneurs—from startups to established SMEs and even public-sector clients—to actualize business ideas at every development stage. Core service offerings include: Accounting & Bookkeeping: Full-spectrum support spanning payroll, tax advisory and digital financial reports—enhanced by their proprietary Parra app enabling real-time financial tracking and invoicing. Financing Sources: Assisting clients in securing financing and grant funding by connecting them to banks and public funds . Advisory & Consulting: Delivering transaction, investment, M&A, concession advisory, and managing EU-funded projects totaling approximately €60 million (approx. €50 million private + €10 million public sector) . Entrepreneur Support: Helping first-time business owners with setup, self-employment incentives, and early-stage consulting . Aestus also offers Parra, a free digital app for clients to conveniently issue invoices, monitor cash flow, access document archives, track payroll, and manage fixed assets—used by over 700 micro and small businesses across Croatia. The firm positions itself as a proactive business partner focused on client success, innovation, transparency, and integrity. With a vibrant, collaborative team culture —and modern office amenities like a gym and pet-friendly environment—we earned accolades from over 1,000 entrepreneurs for delivering personalized, responsive, and technologically enhanced services.

View Full Page
Website
aestus.hr
Employee range
51 – 100
Web Traffic (Monthly)
Funding amount
National Rank(Croatia)
Regional Rank(Eastern Europe)
Global Rank(Worldwide)
4th
E-glas logo
E-glasSB Score: 121

Empowering individuals with disabilities through innovative technology, our startup enables independence and learning for children and adults.

View Full Page
Website
www.eglas.hr
Employee range
51 – 100
Web Traffic (Monthly)
Funding amount
National Rank(Croatia)
Regional Rank(Eastern Europe)
Global Rank(Worldwide)

Total amount:37

Explore More Top Startups

Explore the Startup Ecosystem of Rijeka

National Rank

(Croatia)

2nd

new

Regional Rank

(Eastern Europe)

39th

7

Global Rank

(WorldWide)

633rd

194

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Top Cities for Startups in Croatia - Ranked by StartupBlink

StartupBlink ranks the startup ecosystems of more than 100 countries and 1,000 cities. Download our latest Global Startup Ecosystem Report.
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