The companies listed here are primarily IT services and IT consulting firms based in Vienna. Many of them are established mid-sized to large organizations, with several founded in the late 20th or early 21st century. They provide a range of specialized technological solutions.
Notable examples include Erste Digital, which supports Erste Group's banking services, and Kapsch Group, a global technology corporation. ACP Gruppe offers comprehensive IT consulting and managed services, while the Austrian Federal Computing Centre specializes in e-government solutions for federal administration. WienIT GmbH focuses on digitizing Vienna's municipal services, and Raiffeisen Informatik GmbH & Co KG is a long-standing IT services provider.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Erste Digitalerstedigital.com
A team of 2,000 IT experts supporting Erste Group鈥檚 vision of providing human banking in digital times for over 16 million customers in the CEE region |
2,548 | |||
| 2 |
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 | |||
| 3 |
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 | |||
| 4 |
Kapsch TrafficCom AGkapsch.net
Provider of innovative tolling and traffic management solutions, covering design, implementation, and operation for sustainable mobility worldwide. |
1,345 | |||
| 5 |
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 | |||
| 6 |
Austrian Federal Computing Centrebrz.gv.at
A leading IT service provider for the Austrian federal administration, specializing in e-government solutions |
1,060 | |||
| 7 |
PKEpke-group.com
A trailblazing European company specializing in security, communication, media, engineering, and facility management with a track record of outstanding results on large-scale projects |
961 | |||
| 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 |
Deloitte 脰sterreichdeloitte.at
Leading professional services firm in Austria offering audit, tax, consulting, financial advisory, risk advisory, legal, and digital services with a focus on positive business development |
467 | |||
| 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 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 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 St盲dtische Versicherung, and Donau Versicherung, ensuring seamless IT operations for thousands of users |
347 | |||
| 19 |
ecosioecosio.com
Provider of automated B2B integration solutions including EDI and e-invoicing, enabling seamless communication across diverse supply chains. |
272 | |||
| 20 |
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 | |||
| 21 |
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 | |||
| 22 | 190 | ||||
| 23 |
RUBICON IT GmbHrubicon.eu
An international software company based in Vienna, with offices in Bern and Berlin, providing IT solutions, custom software development, consulting, training, and ISO 27001 certified data center services |
154 | |||
| 24 |
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 | |||
| 25 |
Specific-Group Austriaspecific-group.com
An Austrian company offering IT solutions, software development, skill management, and project services across various industries, with over 400 employees in multiple countries |
125 | |||
| 26 |
TechTalktechtalk.at
Providing top-notch software development services for 25 years, catering to businesses of all sizes with transparency, reliability, and flexibility |
122 | |||
| 27 |
SVC designing e-healthsvc.co.at
The company focuses on developing and implementing IT projects in the Austrian healthcare system, including e-card, ELGA, e-Medication, and social insurance internet portals |
96 | |||
| 28 |
Snap Consulting GmbHsnapconsult.com
Specialists in implementing SAP Logistics, Healthcare, and Technology solutions to meet business requirements with expertise and precision |
93 | |||
| 29 | 80 | ||||
| 30 |
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 | |||
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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 Nov 11, 2026.
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