# 50 leading professional services firms in Austria Tamtam tracks 58 professional services firms headquartered in Austria. This list ranks the 50 largest by number of employees on LinkedIn, led by TÜV AUSTRIA Group, Talentor International and KPMG Austria. Their median headcount is 337. Half of them were founded in 1999 or later. The most common headquarters are Vienna (30), Graz (3) and Innsbruck (3). The professional services sector in Austria is characterized by a mix of large, established firms and mid-sized companies. These firms primarily offer consulting, financial, legal, and IT services. Notable companies include TÜV AUSTRIA Group, a testing and certification company; KPMG Austria, a major audit and consulting firm; BE-terna, specializing in ERP and CRM solutions; and Wolf Theiss, a prominent law firm in the CEE/SEE region. Many of these companies have a strong international presence, serving clients across Europe and globally. A clear pattern among these firms is the concentration of headquarters in Vienna, which is home to many leading professional services providers. While a few companies are in industrial engineering or environmental services, the majority are in business consulting, financial services, and IT consulting. The founding dates span from the late 19th century to the early 2000s, indicating both a long-standing tradition and newer entrants in the market. πŸ‡¦πŸ‡Ή Austria Β· 50 companies Β· Updated Nov 11, 2026 | # | Company | Industry | Headquarters | Employees | Founded | |---|---|---|---|---|---| | 1 | [TÜV AUSTRIA Group](https://www.tamtam.ai/c/tuv-austria-group) (tuv.at)
Austrian-based testing and certification company operating in 34 countries, providing technical expertise for safety, quality, and innovation in various industries | Public Safety | πŸ‡¦πŸ‡Ή Brunn am Gebirge | 2,539 | 1872 | | 2 | [Talentor International](https://www.tamtam.ai/c/talentor-international) (talentor.com)
International executive search firm connecting businesses with top leadership talent globally, leveraging a network of experienced consultants across various industries and regions | Executive Search Services | πŸ‡¦πŸ‡Ή Vienna | 2,091 | 2003 | | 3 | [KPMG Austria](https://www.tamtam.ai/c/kpmg-austria) (kpmg.com)
Largest Austrian audit and consulting firm with over 2,050 employees, strong regional presence, and global project capabilities. | Business Consulting and Services | πŸ‡¦πŸ‡Ή Vienna | 1,226 | 1946 | | 4 | [PwC Austria](https://www.tamtam.ai/c/pwc-austria) (pwc.at)
A global professional services network with offices in 157 countries, offering assurance, tax, and advisory services to organizations and individuals | Financial Services | πŸ‡¦πŸ‡Ή Vienna | 1,075 | 1924 | | 5 | [BE-terna](https://www.tamtam.ai/c/be-terna) (be-terna.com)
Providing industry-specific ERP, CRM, BI, data analytics, and automation solutions to medium and large European companies across sectors. | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Innsbruck | 862 | 2005 | | 6 | [TPA Group](https://www.tamtam.ai/c/tpa-group) (tpa-group.com)
A leading tax advisory and auditing services company in Central and South Eastern Europe, with over 1,700 staff across 12 countries | Financial Services | πŸ‡¦πŸ‡Ή Vienna | 861 | 1979 | | 7 | [VTU Group](https://www.tamtam.ai/c/vtu-group) (vtu.com)
A group of engineers and consultants specializing in industrial process plants, offering services from design to start-up, with expertise in GMP services | Design Services | πŸ‡¦πŸ‡Ή Grambach / Graz | 814 | 1990 | | 8 | [MAGNA Powertrain / Engineering Center Steyr GmbH & Co KG](https://www.tamtam.ai/c/magna-powertrain-engineering-center-steyr-gmbh-and-co-kg) (engineering.mpt.magna.com)
An internationally recognized engineering supplier specializing in propulsion and vehicle engineering, simulation services, technical software, prototyping, and testing for various vehicle types | Motor Vehicle Manufacturing | πŸ‡¦πŸ‡Ή Sankt Valentin | 797 | | | 9 | [Wolf Theiss](https://www.tamtam.ai/c/wolf-theiss) (wolftheiss.com)
A leading law firm in CEE/SEE region with over 360 lawyers offering services in various legal fields to international clients | Law Practice | πŸ‡¦πŸ‡Ή Vienna | 758 | 1957 | | 10 | [ATP architects engineers](https://www.tamtam.ai/c/atp-architects-engineers) (atp.ag)
Leading integrated design firm in Europe, providing architectural and engineering services from 14 offices across the continent, specializing in complex building projects | Architecture and Planning | πŸ‡¦πŸ‡Ή Innsbruck | 723 | | | 11 | [Schoenherr Attorneys at Law](https://www.tamtam.ai/c/schoenherr-attorneys-at-law) (schoenherr.eu)
Leading full-service law firm with a strong presence in Central and Eastern Europe, offering high-end legal services to international clients | Law Practice | πŸ‡¦πŸ‡Ή Vienna | 716 | 1950 | | 12 | [BDO Austria](https://www.tamtam.ai/c/bdo-austria) (bdo.at)
The company offers audit, tax consulting, and corporate finance services. They also provide comprehensive consulting in areas like restructuring, digital services, and people and organization strategies. | Financial Services | πŸ‡¦πŸ‡Ή Vienna | 700 | 1962 | | 13 | [Umweltbundesamt - Environment Agency Austria](https://www.tamtam.ai/c/umweltbundesamt-environment-agency-austria) (umweltbundesamt.at)
Europe's leading environmental consultants in Austria, facilitating sustainable economic and societal transformation through expert decision-making support at all levels and engaging in dialogue with key stakeholders | Environmental Services | πŸ‡¦πŸ‡Ή Wien / Vienna | 538 | 1985 | | 14 | [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 | | | 15 | [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 | | 16 | [ISG International Service Group](https://www.tamtam.ai/c/isg-international-service-group) (isg.com)
Provides full-service HR solutions including executive search, personnel development, employer branding, outplacement, interim management, and temporary staffing across Europe. | Staffing and Recruiting | πŸ‡¦πŸ‡Ή Vienna | 488 | 1999 | | 17 | [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 | | | 18 | [BERNARD Gruppe](https://www.tamtam.ai/c/bernard-gruppe) (bernard-gruppe.com)
An independent engineering company providing interdisciplinary solutions in energy, industry, infrastructure, and mobility globally, focused on delivering fair, innovative, and sustainable projects | Engineering Services | πŸ‡¦πŸ‡Ή Hall in Tirol | 457 | 1983 | | 19 | [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 | | 20 | [Γ–SB Gruppe](https://www.tamtam.ai/c/osb-gruppe) (oesb-gruppe.com)
The company develops innovative concepts, pilot projects, counseling programs, and services in response to changing societal and economic challenges | Business Consulting and Services | πŸ‡¦πŸ‡Ή Vienna | 393 | | | 21 | [Netconomy](https://www.tamtam.ai/c/netconomy) (netconomy.net)
Digital solutions provider enabling market-leading transformation through seamless customer experiences, with expertise in strategy, platform architecture, and operational excellence | Software Development | πŸ‡¦πŸ‡Ή Graz | 374 | 2000 | | 22 | [4Service Group](https://www.tamtam.ai/c/4service-group) (4service.company)
International research Customer Experience company specializing in Mystery Shopping Helps companies improve service quality with extensive network and dedicated professionals | Market Research | πŸ‡¦πŸ‡Ή Vienna | 356 | 2001 | | 23 | [ILF Consulting Engineers in Austria](https://www.tamtam.ai/c/ilf-consulting-engineers-in-austria) (ilf.com)
ILF Consulting Engineers Austria GmbH is an international engineering and consulting company supporting clients in complex industrial and infrastructure projects worldwide | Engineering Services | πŸ‡¦πŸ‡Ή Rum | 348 | 1967 | | 24 | [EFS Consulting](https://www.tamtam.ai/c/efs-consulting) (efs.consulting)
Automotive consulting firm specializing in product, market, and production strategies, offering innovative solutions and global services with interdisciplinary expertise | Business Consulting and Services | πŸ‡¦πŸ‡Ή Vienna | 341 | 1992 | | 25 | [LeitnerLeitner Austria](https://www.tamtam.ai/c/leitnerleitner-austria) (leitnerleitner.com)
A leading tax advisory and auditing firm in the CEE/SEE region, offering personalized solutions for tax, audit, and financial advisory issues | Financial Services | πŸ‡¦πŸ‡Ή Linz | 337 | 1959 | | 26 | [TPA Austria](https://www.tamtam.ai/c/tpa-austria) (tpa-group.at)
A leading tax advisory and auditing services company with offices in Austria and Central/South Eastern Europe, employing approximately 1,000 individuals in eleven countries | Financial Services | πŸ‡¦πŸ‡Ή Vienna | 318 | 1979 | | 27 | [FCP Fritsch, Chiari & Partner ZT GmbH](https://www.tamtam.ai/c/fcp-fritsch-chiari-and-partner-zt-gmbh) (fcp.at)
An engineering office with headquarters in Vienna and international presence, offering services with a team of over 350 staff members | Civil Engineering | πŸ‡¦πŸ‡Ή Vienna | 278 | 1960 | | 28 | [Baumschlager Eberle](https://www.tamtam.ai/c/baumschlager-eberle) (baumschlager-eberle.com)
The company is an architectural practice that creates authentic, sustainable buildings with a focus on cultural, social, and aesthetic values They emphasize transparency, innovation, and poetic design elements | Architecture and Planning | πŸ‡¦πŸ‡Ή Lustenau | 222 | 1985 | | 29 | [ADWEKO](https://www.tamtam.ai/c/adweko) (adweko.com)
A leading consulting firm specializing in analytical solutions for banks and insurance companies, offering consulting, managed services, and software development with a focus on objective advice | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή Walldorf | 218 | 2008 | | 30 | [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 | | 31 | [Grant Thornton Austria](https://www.tamtam.ai/c/grant-thornton-austria) (grantthornton.at)
A leading company in Austria providing auditing, tax consulting, outsourcing, advisory services, with a focus on forensics, cyber security, and compliance technology | Business Consulting and Services | πŸ‡¦πŸ‡Ή Vienna | 187 | | | 32 | [CMS Reich-Rohrwig Hainz](https://www.tamtam.ai/c/cms-reich-rohrwig-hainz) (cms.law)
A global firm with 4,500 experts providing legal and tax advice, focusing on long-term partnerships to help organizations succeed in changing times | Legal Services | πŸ‡¦πŸ‡Ή Vienna | 125 | 1970 | | 33 | [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 | | 34 | [RSM Austria](https://www.tamtam.ai/c/rsm-austria) (rsm.global)
An international network of audit, tax, and consulting experts providing a wide range of services, including risk management, restructuring, and financial solutions | Financial Services | πŸ‡¦πŸ‡Ή Vienna | 66 | 1967 | | 35 | [GROUPE QUALITAT](https://www.tamtam.ai/c/groupe-qualitat) (qualitat.fr)
Providing technical building diagnostics and asbestos detection services for real estate professionals and asbestos dismantling companies across multiple French locations. | Construction | πŸ‡¦πŸ‡Ή Sarleinsbach | 61 | 2004 | | 36 | [LNConsult GmbH](https://www.tamtam.ai/c/lnconsult-gmbh) (lnconsult.at)
A leading logistics consulting company offering full-service solutions and digital tools to enhance supply chain efficiency globally | Transportation, Logistics, Supply Chain and Storage | πŸ‡¦πŸ‡Ή Fernitz bei Graz | 56 | 2003 | | 37 | [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 | | 38 | [Objectbay](https://www.tamtam.ai/c/objectbay) (objectbay.com)
Agile software development company offering end-to-end solutions with Java, Python, and Ruby on Rails technologies, focusing on transparency, quality, and productivity | Software Development | πŸ‡¦πŸ‡Ή Traun | 46 | 2006 | | 39 | [CONFIDA Austria](https://www.tamtam.ai/c/confida-austria) (confida.at)
An international tax advising, consulting, and auditing firm with offices in Austria and South-East Europe, providing optimal solutions for clients worldwide | Financial Services | πŸ‡¦πŸ‡Ή Graz | 45 | 1978 | | 40 | [Steuer & Service Steuerberatungs GmbH](https://www.tamtam.ai/c/steuer-and-service-steuerberatungs-gmbh) (steuerundservice.at)
A proactive consultancy firm providing expert services in tax, finance, payroll, and HR, with a focus on personalized advice, high competence, clear communication, and quick responsiveness | Accounting | πŸ‡¦πŸ‡Ή Vienna | 43 | 2002 | | 41 | [PwC Legal Austria](https://www.tamtam.ai/c/pwc-legal-austria) (pwclegal.at)
Global professional services leader with a legal network of over 3,700 professionals in 95 countries providing business and legal solutions worldwide | Legal Services | πŸ‡¦πŸ‡Ή Vienna | 35 | 2016 | | 42 | [SPT WirtschaftsprΓΌfung und Steuerberatung](https://www.tamtam.ai/c/spt-wirtschaftsprufung-und-steuerberatung) (spt.at)
A leading audit and tax consulting firm based in Dornbirn, with over 40 employees offering expertise to a diverse range of clients | Financial Services | πŸ‡¦πŸ‡Ή Dornbirn | 30 | 1999 | | 43 | [Risk Experts Risiko Engineering GmbH](https://www.tamtam.ai/c/risk-experts-risiko-engineering-gmbh) (riskexperts.at)
Specialized consulting firm helping businesses identify and mitigate risks through expert analysis, offering comprehensive solutions and services for effective risk management and damage prevention | Business Consulting and Services | πŸ‡¦πŸ‡Ή Vienna | 30 | 2005 | | 44 | [Venionaire Capital AG](https://www.tamtam.ai/c/venionaire-capital-ag) (venionaire.com)
Ventionaire Capital specializes in venture capital and private equity, advising startups, making early-stage investments, and managing a portfolio with a focus on tech-related sectors | Financial Services | πŸ‡¦πŸ‡Ή Vienna | 24 | 2012 | | 45 | [FALCON \| Tax \| Audit \| Advisory \| virtual Services](https://www.tamtam.ai/c/falcon-tax-audit-advisory-virtual-services) (fal-con.eu)
Provider of tax, accounting, payroll, financial advisory, and audit services with a focus on personal commitment, integration, communication, and integrity | Law Practice | πŸ‡¦πŸ‡Ή Vienna | 23 | 2002 | | 46 | [wtt Steuerberatung](https://www.tamtam.ai/c/wtt-steuerberatung) (linktr.ee)
A leading tax consultancy firm in Tirol, offering services in accounting, tax advisory, payroll, and business consulting to a wide range of clients | Accounting | πŸ‡¦πŸ‡Ή Innsbruck | 22 | 2000 | | 47 | [CQ Investment Group](https://www.tamtam.ai/c/cq-investment-group) (c-quadrat.com)
Specializes in quantitative and discretionary absolute and total return strategies aiming for sustainable growth for institutional and private investors. | Financial Services | πŸ‡¦πŸ‡Ή Vienna | 19 | 1991 | | 48 | [Dharma Funding Solutions](https://www.tamtam.ai/c/dharma-funding-solutions) (dharma-funding.solutions)
Business development consulting firm specializing in business planning, market analysis, and securing funding for companies, startups, and research projects on local, national, and EU levels | Financial Services | πŸ‡¦πŸ‡Ή Graz | 19 | 2017 | | 49 | [Finnoconsult](https://www.tamtam.ai/c/finnoconsult) (finnoconsult.at)
An innovation consultancy specializing in digital solutions for financial and insurance companies, offering end-to-end implementation, user-centric design, and a digital competence comparison tool | Business Consulting and Services | πŸ‡¦πŸ‡Ή Vienna | 17 | 2015 | | 50 | [VIABIRDS Technologies](https://www.tamtam.ai/c/viabirds-technologies) (viabirds.com)
A software solution provider for digital retail, empowering businesses to enhance their digital commerce and create exceptional consumer experiences globally | IT Services and IT Consulting | πŸ‡¦πŸ‡Ή St. Michael im Lungau | 11 | 2020 | ## 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 Austria - [The largest companies in Austria](https://www.tamtam.ai/l/largest-companies-austria) (1,412) - [Multinational companies in Austria](https://www.tamtam.ai/l/multinational-companies-austria) (578) - [Companies with in-house R&D in Austria](https://www.tamtam.ai/l/r-and-d-companies-austria) (259) - [Manufacturers in Austria](https://www.tamtam.ai/l/manufacturers-austria) (249) - [Critical infrastructure operators in Austria](https://www.tamtam.ai/l/critical-infrastructure-operators-austria) (166) - [Retail chains in Austria](https://www.tamtam.ai/l/retail-chains-austria) (159) - [Hardware manufacturers in Austria](https://www.tamtam.ai/l/hardware-companies-austria) (150) - [Financial services firms in Austria](https://www.tamtam.ai/l/financial-services-firms-austria) (146) - [Corporate groups and holding companies in Austria](https://www.tamtam.ai/l/holding-companies-austria) (134) - [Family-owned companies in Austria](https://www.tamtam.ai/l/family-owned-companies-austria) (119) - [Companies with a mobile app in Austria](https://www.tamtam.ai/l/companies-with-mobile-app-austria) (114) - [Software Development companies in Austria](https://www.tamtam.ai/l/software-development-companies-austria) (103) - [IT Services and IT Consulting companies in Austria](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-austria) (101) - [SaaS companies in Austria](https://www.tamtam.ai/l/saas-companies-austria) (90) - [Public sector organisations in Austria](https://www.tamtam.ai/l/public-sector-organisations-austria) (88) - [Education providers in Austria](https://www.tamtam.ai/l/education-companies-austria) (81) - [Banking companies in Austria](https://www.tamtam.ai/l/banking-companies-austria) (79) - [IT services companies in Austria](https://www.tamtam.ai/l/it-services-companies-austria) (70) - [Financial Services companies in Austria](https://www.tamtam.ai/l/financial-services-companies-austria) (68) - [Publicly traded companies in Austria](https://www.tamtam.ai/l/publicly-traded-companies-austria) (58) - [Automotive manufacturers and suppliers in Austria](https://www.tamtam.ai/l/automotive-companies-austria) (53) - [Consulting firms in Austria](https://www.tamtam.ai/l/consulting-firms-austria) (48) - [Machinery Manufacturing companies in Austria](https://www.tamtam.ai/l/machinery-manufacturing-companies-austria) (47) - [Research institutes in Austria](https://www.tamtam.ai/l/research-institutes-austria) (45) ## The same list elsewhere in Austria - [Professional services firms in Vienna](https://www.tamtam.ai/l/professional-services-firms-vienna) (35) --- Source: https://www.tamtam.ai/l/professional-services-firms-austria