| # | Company | Employees |
|---|---|---|
| 1 |
Frequentisfrequentis.com
An international supplier of communication and information systems for control centers with safety-critical tasks in air traffic management and public safety & transport sectors |
2,573 |
| 2 |
Erste Digitalerstedigital.com
A team of 2,000 IT experts supporting Erste Group’s vision of providing human banking in digital times for over 16 million customers in the CEE region |
2,548 |
| 3 |
Kapsch Groupkapsch.net
Global technology corporation with a focus on innovation and customer satisfaction, investing in research and development to bring new solutions to market |
1,743 |
| 4 |
ACP Gruppeacp-gruppe.com
ACP offers independent consulting, procurement, integration, managed services, datacenter services, and IT financing for all IT needs, focusing on digitalization and optimization for businesses |
1,731 |
| 5 |
Kapsch TrafficCom AGkapsch.net
Provider of innovative tolling and traffic management solutions, covering design, implementation, and operation for sustainable mobility worldwide. |
1,345 |
| 6 |
CANCOM Austriacancom.at
Leading ICT service provider & digitalization partner in Austria with expertise in collaboration, networking, and IT technology Offers software solutions and smart workplace services |
1,084 |
| 7 |
Austrian Federal Computing Centrebrz.gv.at
A leading IT service provider for the Austrian federal administration, specializing in e-government solutions |
1,060 |
| 8 |
Printec Groupprintecgroup.com
A leader in transaction technologies, offering solutions to improve customer interactions, enhance operations, and ensure regulatory compliance in Central and Eastern Europe |
800 |
| 9 |
WienIT GmbHwienit.at
Digitizing and innovating the operations of Vienna's municipal services through IT solutions, driving forward the city's infrastructure and services for a smarter future |
597 |
| 10 |
Kapsch TrafficCom North Americakapsch.net
Provider of innovative tolling and traffic management solutions, covering design, implementation, and operation for sustainable mobility worldwide. |
588 |
| 11 |
Raiffeisen Informatik GmbH & Co KGraiffeiseninformatik.at
A leading Austrian IT services provider offering data center operations, security services, software consulting, and banking solutions for over 50 years |
586 |
| 12 |
RISE - Research Industrial Systems Engineeringrise-world.com
Internationally recognized IT R&D provider offering consultancy, research & development in information technology, specializing in critical environments and large-scale projects |
516 |
| 13 |
CNT Management Consultingcnt-online.com
CNT Management Consulting is a leading firm specializing in SAP solutions with 450+ consultants across multiple locations, offering expertise in integration, customization, and implementation strategies |
495 |
| 14 |
Compaxcompax.com
The company delivers cloud-based Business Support Solutions to service providers and additional markets, developed by a skilled team with agile delivery |
470 |
| 15 |
IT-Services der Sozialversicherung GmbHitsv.at
A leading digitalization enabler in Austria's healthcare sector, specializing in IT solutions for social insurance, including e-Impfpass and GreenCheck-App |
455 |
| 16 |
T-Systems Austriat-systems.com
T-Systems offers innovative ICT solutions for multinational corporations and public institutions, shaping the connected future of economy and society |
424 |
| 17 |
EBCONTebcont.com
An Austrian IT services company with over 650 employees providing IT solutions for 130+ customers, including AI and Data Science specialists |
421 |
| 18 |
twinformatics GmbHtwinformatics.at
The company creates software solutions for Vienna Insurance Group, Wiener Städtische Versicherung, and Donau Versicherung, ensuring seamless IT operations for thousands of users |
347 |
| 19 |
BOC Groupboc-group.com
This company specializes in Enterprise Modelling Software for business management, offering tools for BPM, EAM, and GRC to drive digital transformation and growth |
334 |
| 20 |
ecosioecosio.com
Provider of automated B2B integration solutions including EDI and e-invoicing, enabling seamless communication across diverse supply chains. |
272 |
| 21 |
K-Businesscom AGkapsch.net
A leading ICT service partner in Austria and Central-Eastern Europe, providing information technology and telecommunication solutions, with a focus on system integration and ongoing optimization |
251 |
| 22 |
Bechtle Austriabechtle.com
A leading IT solutions provider in Austria with a strong team of certified consultants serving businesses, enterprises, and public sector clients with innovative IT services and solutions for long-term partnerships |
240 |
| 23 | 190 | |
| 24 |
Canon Austria GmbHcanon.at
The company provides imaging solutions, office automation, and digital production services in Austria to help businesses drive profitability and innovation |
186 |
| 25 |
WKO Inhouse GmbHsite.wko.at
The company utilizes cutting-edge technologies and project management tools in IT and Media, emphasizing teamwork, professionalism, and continuous growth |
167 |
| 26 |
scc EDV-Beratung AGscc.at
A leading SAP service provider in Austria, scc helps businesses create effective solutions by combining SAP and Open Text technologies, emphasizing collaborative projects for success |
166 |
| 27 |
Konica Minolta Business Solutions Austria GmbHkonicaminolta.at
We specialize in shaping ideas and helping businesses on their digitalization journey through installing systems, providing services, and managing IT infrastructure |
164 |
| 28 |
irian. Softwareentwicklung. Wirklich schnell.irian.com
A software technology consultancy specializing in Java open source technologies, offering ideation, prototyping, and agile solution development with a passionate team |
160 |
| 29 |
CompuGroup Medical Österreichcgm.com
Global eHealth company offering software products and services to support medical activities, organizational tasks, and personal health records for healthcare providers worldwide |
158 |
| 30 |
SVD Büromanagement GmbHsvd-karriere.at
A back-office service provider in Austria's social insurance and healthcare sectors, offering a range of services including IT, facility management, and procurement |
158 |
| 31 |
CPB SOFTWARE AGcpb-software.com
This company offers tailored IT solutions, from products to development, cloud services and business process management, with over 25 years of experience and international clients |
158 |
| 32 |
EDITEL Groupeditelgroup.com
A leading provider of EDI solutions specializing in supply chain process optimization with a global presence and a comprehensive portfolio of services |
156 |
| 33 |
Raiffeisen Group IT GmbHraiffeisen-group-it.com
An IT company located in Vienna, Austria, specializing in providing IT solutions and services to a variety of businesses |
155 |
| 34 |
HEROherocoin.io
The company offers a decentralized betting token on the ethereum blockchain, rewarding players, creators, and the community, with passive income opportunities |
147 |
| 35 |
Springtime Technologiesgo-springtime.com
The company supports global organizations in transforming their financial processes by integrating systems, automating tasks, and providing software and services |
142 |
| 36 |
Software Daten Servicesds.at
A global software solutions provider specializing in securities processing, tax reporting, compliance, and software testing for financial and telecommunications industries |
138 |
| 37 |
TTControlttcontrol.com
Development and supply of safety control systems, rugged displays, connectivity, and IoT solutions for mobile machinery and off-highway vehicles. |
125 |
| 38 |
SEC Consult Groupsec-consult.com
A leading consultancy specializing in cyber and application security, offering a range of services including audits, certifications, secure development support, and risk management |
95 |
| 39 |
WeAreDeveloperswearedevelopers.com
Provides educational content, career opportunities, and global networking events for software engineers and AI professionals while helping companies recruit top technical talent. |
63 |
| 40 |
ready2orderready2order.com
A FinTech company specializing in cloud POS and payment solutions for small businesses, now part of the Zucchetti Group, serving over 10,000 customers in Germany and Austria |
60 |
| 41 |
hokifyhokify.com
A mobile job platform in the DACH region helps 60,000 companies recruit new employees faster through innovative mobile and social media solutions |
59 |
| 42 |
Alltech International, Inc.alltech.net
An award-winning IT services provider in the Washington DC area, specializing in Federal Government support and integration services nationwide since 1994 |
50 |
| 43 |
SynerGIS Informationssysteme GmbHesri-austria.at
Specializing in GIS integration, this company assists organizations in implementing Geographic Information Systems for improved efficiency and data management |
37 |
| 44 |
HAKOM Time Serieshakom.at
A leader in energy industry data management, specializing in time series for Smart City, IoT, and more to create value |
33 |
| 45 |
EOX IT Services GmbHeox.at
Provides geodata and Earth Observation solutions and services, committed to open source software and open geospatial standards for major European programs. |
29 |
| 46 |
Paradine GmbHparadine.at
Global consulting company specializing in product master data management, offering solutions for efficient data consolidation, verification, and enrichment for global corporations |
27 |
| 47 | 26 | |
| 48 | 20 |
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 10, 2026.
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