# The 30 largest IT services companies in Vienna Tamtam tracks 37 IT services companies headquartered in Vienna. This list ranks the 30 largest by number of employees on LinkedIn, led by Erste Digital, Kapsch Group and ACP Gruppe. Their median headcount is 455. Half of them were founded in 1999 or later. 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. πŸ‡¦πŸ‡Ή Vienna Β· 30 companies Β· Updated Nov 11, 2026 | # | Company | Industry | Headquarters | Employees | Founded | |---|---|---|---|---|---| | 1 | [Erste Digital](https://www.tamtam.ai/c/erste-digital) (erstedigital.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 | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Vienna | 2,548 | | | 2 | [Kapsch Group](https://www.tamtam.ai/c/kapsch-group) (kapsch.net)
Global technology corporation with a focus on innovation and customer satisfaction, investing in research and development to bring new solutions to market | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Vienna | 1,743 | | | 3 | [ACP Gruppe](https://www.tamtam.ai/c/acp-gruppe) (acp-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 | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Vienna | 1,731 | 1993 | | 4 | [Kapsch TrafficCom AG](https://www.tamtam.ai/c/kapsch-trafficcom-ag) (kapsch.net)
Provider of innovative tolling and traffic management solutions, covering design, implementation, and operation for sustainable mobility worldwide. | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Vienna | 1,345 | 2002 | | 5 | [CANCOM Austria](https://www.tamtam.ai/c/cancom-austria) (cancom.at)
Leading ICT service provider & digitalization partner in Austria with expertise in collaboration, networking, and IT technology Offers software solutions and smart workplace services | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Vienna | 1,084 | | | 6 | [Austrian Federal Computing Centre](https://www.tamtam.ai/c/austrian-federal-computing-centre) (brz.gv.at)
A leading IT service provider for the Austrian federal administration, specializing in e-government solutions | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Vienna | 1,060 | 1997 | | 7 | [PKE](https://www.tamtam.ai/c/pke) (pke-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 | Holding Companies | πŸ‡¦πŸ‡Ή Vienna | 961 | 1979 | | 8 | [Printec Group](https://www.tamtam.ai/c/printec-group) (printecgroup.com)
A leader in transaction technologies, offering solutions to improve customer interactions, enhance operations, and ensure regulatory compliance in Central and Eastern Europe | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Vienna | 800 | 1988 | | 9 | [WienIT GmbH](https://www.tamtam.ai/c/wienit-gmbh) (wienit.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 | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Vienna | 597 | 2003 | | 10 | [Kapsch TrafficCom North America](https://www.tamtam.ai/c/kapsch-trafficcom-north-america) (kapsch.net)
Provider of innovative tolling and traffic management solutions, covering design, implementation, and operation for sustainable mobility worldwide. | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Vienna | 588 | 1892 | | 11 | [Raiffeisen Informatik GmbH & Co KG](https://www.tamtam.ai/c/raiffeisen-informatik-gmbh-and-co-kg) (raiffeiseninformatik.at)
A leading Austrian IT services provider offering data center operations, security services, software consulting, and banking solutions for over 50 years | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Vienna | 586 | 1969 | | 12 | [RISE - Research Industrial Systems Engineering](https://www.tamtam.ai/c/rise-research-industrial-systems-engineering) (rise-world.com)
Internationally recognized IT R&D provider offering consultancy, research & development in information technology, specializing in critical environments and large-scale projects | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Vienna | 516 | | | 13 | [CNT Management Consulting](https://www.tamtam.ai/c/cnt-management-consulting) (cnt-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 | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Vienna | 495 | 1999 | | 14 | [Deloitte Γ–sterreich](https://www.tamtam.ai/c/deloitte-osterreich) (deloitte.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 | Management Consulting | πŸ‡¦πŸ‡Ή Vienna | 467 | | | 15 | [IT-Services der Sozialversicherung GmbH](https://www.tamtam.ai/c/it-services-der-sozialversicherung-gmbh) (itsv.at)
A leading digitalization enabler in Austria's healthcare sector, specializing in IT solutions for social insurance, including e-Impfpass and GreenCheck-App | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Vienna | 455 | 2004 | | 16 | [T-Systems Austria](https://www.tamtam.ai/c/t-systems-austria) (t-systems.com)
T-Systems offers innovative ICT solutions for multinational corporations and public institutions, shaping the connected future of economy and society | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Vienna | 424 | | | 17 | [EBCONT](https://www.tamtam.ai/c/ebcont) (ebcont.com)
An Austrian IT services company with over 650 employees providing IT solutions for 130+ customers, including AI and Data Science specialists | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Vienna | 421 | 2001 | | 18 | [twinformatics GmbH](https://www.tamtam.ai/c/twinformatics-gmbh) (twinformatics.at)
The company creates software solutions for Vienna Insurance Group, Wiener StΓ€dtische Versicherung, and Donau Versicherung, ensuring seamless IT operations for thousands of users | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Vienna | 347 | | | 19 | [ecosio](https://www.tamtam.ai/c/ecosio) (ecosio.com)
Provider of automated B2B integration solutions including EDI and e-invoicing, enabling seamless communication across diverse supply chains. | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Vienna | 272 | 2012 | | 20 | [K-Businesscom AG](https://www.tamtam.ai/c/k-businesscom-ag) (kapsch.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 | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Vienna | 251 | 2002 | | 21 | [Bechtle Austria](https://www.tamtam.ai/c/bechtle-austria) (bechtle.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 | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Vienna | 240 | 2008 | | 22 | [NAVAX](https://www.tamtam.ai/c/navax) (navax.com)
This company optimizes business processes by analyzing, streamlining, and implementing them in IT, offering solutions such as ERP, CRM, collaboration, and more | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Vienna | 190 | 1995 | | 23 | [RUBICON IT GmbH](https://www.tamtam.ai/c/rubicon-it-gmbh) (rubicon.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 | Software Development | πŸ‡¦πŸ‡Ή Vienna | 154 | 2001 | | 24 | [Software Daten Service](https://www.tamtam.ai/c/software-daten-service) (sds.at)
A global software solutions provider specializing in securities processing, tax reporting, compliance, and software testing for financial and telecommunications industries | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Vienna | 138 | 1974 | | 25 | [Specific-Group Austria](https://www.tamtam.ai/c/specific-group-austria) (specific-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 | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Vienna | 125 | 1998 | | 26 | [TechTalk](https://www.tamtam.ai/c/techtalk) (techtalk.at)
Providing top-notch software development services for 25 years, catering to businesses of all sizes with transparency, reliability, and flexibility | Software Development | πŸ‡¦πŸ‡Ή Vienna | 122 | 1993 | | 27 | [SVC designing e-health](https://www.tamtam.ai/c/svc-designing-e-health) (svc.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 | Software Development | πŸ‡¦πŸ‡Ή Vienna | 96 | | | 28 | [Snap Consulting GmbH](https://www.tamtam.ai/c/snap-consulting-gmbh) (snapconsult.com)
Specialists in implementing SAP Logistics, Healthcare, and Technology solutions to meet business requirements with expertise and precision | Software Development | πŸ‡¦πŸ‡Ή Vienna | 93 | 2000 | | 29 | [ONTEC AG](https://www.tamtam.ai/c/ontec-ag) (ontec.at)
Specializing in custom software systems, managed IT services, and AI solutions for critical business processes with a focus on performance, scalability, and IT security | Software Development | πŸ‡¦πŸ‡Ή Vienna | 80 | 2001 | | 30 | [Alltech International, Inc.](https://www.tamtam.ai/c/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 | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Vienna | 50 | 1994 | ## 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. ## More company lists in Vienna - [The largest companies in Vienna](https://www.tamtam.ai/l/largest-companies-vienna) (580) - [Multinational companies in Vienna](https://www.tamtam.ai/l/multinational-companies-vienna) (228) - [Critical infrastructure operators in Vienna](https://www.tamtam.ai/l/critical-infrastructure-operators-vienna) (73) - [Financial services firms in Vienna](https://www.tamtam.ai/l/financial-services-firms-vienna) (71) - [IT Services and IT Consulting companies in Vienna](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-vienna) (61) - [Companies with in-house R&D in Vienna](https://www.tamtam.ai/l/r-and-d-companies-vienna) (60) - [SaaS companies in Vienna](https://www.tamtam.ai/l/saas-companies-vienna) (51) - [Software Development companies in Vienna](https://www.tamtam.ai/l/software-development-companies-vienna) (49) - [Companies with a mobile app in Vienna](https://www.tamtam.ai/l/companies-with-mobile-app-vienna) (48) - [Public sector organisations in Vienna](https://www.tamtam.ai/l/public-sector-organisations-vienna) (48) - [Manufacturers in Vienna](https://www.tamtam.ai/l/manufacturers-vienna) (48) - [Financial Services companies in Vienna](https://www.tamtam.ai/l/financial-services-companies-vienna) (47) - [Corporate groups and holding companies in Vienna](https://www.tamtam.ai/l/holding-companies-vienna) (47) - [Retail chains in Vienna](https://www.tamtam.ai/l/retail-chains-vienna) (41) - [Education providers in Vienna](https://www.tamtam.ai/l/education-companies-vienna) (36) - [Professional services firms in Vienna](https://www.tamtam.ai/l/professional-services-firms-vienna) (35) - [Publicly traded companies in Vienna](https://www.tamtam.ai/l/publicly-traded-companies-vienna) (29) - [Hardware manufacturers in Vienna](https://www.tamtam.ai/l/hardware-companies-vienna) (27) - [Consulting firms in Vienna](https://www.tamtam.ai/l/consulting-firms-vienna) (25) - [Banking companies in Vienna](https://www.tamtam.ai/l/banking-companies-vienna) (25) ## The same list elsewhere in Austria - [IT services companies in Austria](https://www.tamtam.ai/l/it-services-companies-austria) (70) --- Source: https://www.tamtam.ai/l/it-services-companies-vienna