The professional services firms in Vienna listed here are mid-sized to large organizations, predominantly in financial services, law, and IT consulting. Companies such as KPMG Austria and PwC Austria provide audit, tax, and advisory services, while Wolf Theiss and Schoenherr Attorneys at Law specialize in legal services. RISE and EBCONT are notable for their IT services and consulting expertise. The companies on this list are generally well-established, with many founded before the year 2000.
There is a strong concentration of firms offering financial services and legal counsel, indicating a robust demand for these professional specializations in Vienna. Beyond these core areas, there are also significant players in executive search like Talentor International and IT consulting such as CNT Management Consulting, reflecting a diverse yet mature professional services landscape.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Talentor Internationaltalentor.com
International executive search firm connecting businesses with top leadership talent globally, leveraging a network of experienced consultants across various industries and regions |
2,091 | |||
| 2 |
KPMG Austriakpmg.com
Largest Austrian audit and consulting firm with over 2,050 employees, strong regional presence, and global project capabilities. |
1,226 | |||
| 3 |
PwC Austriapwc.at
A global professional services network with offices in 157 countries, offering assurance, tax, and advisory services to organizations and individuals |
1,075 | |||
| 4 |
TPA Grouptpa-group.com
A leading tax advisory and auditing services company in Central and South Eastern Europe, with over 1,700 staff across 12 countries |
861 | |||
| 5 |
Wolf Theisswolftheiss.com
A leading law firm in CEE/SEE region with over 360 lawyers offering services in various legal fields to international clients |
758 | |||
| 6 |
Schoenherr Attorneys at Lawschoenherr.eu
Leading full-service law firm with a strong presence in Central and Eastern Europe, offering high-end legal services to international clients |
716 | |||
| 7 |
BDO Austriabdo.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. |
700 | |||
| 8 |
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 | |||
| 9 |
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 | |||
| 10 |
ISG International Service Groupisg.com
Provides full-service HR solutions including executive search, personnel development, employer branding, outplacement, interim management, and temporary staffing across Europe. |
488 | |||
| 11 |
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 | |||
| 12 |
EBCONTebcont.com
An Austrian IT services company with over 650 employees providing IT solutions for 130+ customers, including AI and Data Science specialists |
421 | |||
| 13 |
脰SB Gruppeoesb-gruppe.com
The company develops innovative concepts, pilot projects, counseling programs, and services in response to changing societal and economic challenges |
393 | |||
| 14 |
4Service Group4service.company
International research Customer Experience company specializing in Mystery Shopping Helps companies improve service quality with extensive network and dedicated professionals |
356 | |||
| 15 |
EFS Consultingefs.consulting
Automotive consulting firm specializing in product, market, and production strategies, offering innovative solutions and global services with interdisciplinary expertise |
341 | |||
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| 16 |
TPA Austriatpa-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 |
318 | |||
| 17 |
FCP Fritsch, Chiari & Partner ZT GmbHfcp.at
An engineering office with headquarters in Vienna and international presence, offering services with a team of over 350 staff members |
278 | |||
| 18 | 190 | ||||
| 19 |
Grant Thornton Austriagrantthornton.at
A leading company in Austria providing auditing, tax consulting, outsourcing, advisory services, with a focus on forensics, cyber security, and compliance technology |
187 | |||
| 20 |
CMS Reich-Rohrwig Hainzcms.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 |
125 | |||
| 21 |
Snap Consulting GmbHsnapconsult.com
Specialists in implementing SAP Logistics, Healthcare, and Technology solutions to meet business requirements with expertise and precision |
93 | |||
| 22 |
RSM Austriarsm.global
An international network of audit, tax, and consulting experts providing a wide range of services, including risk management, restructuring, and financial solutions |
66 | |||
| 23 |
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 | |||
| 24 |
Steuer & Service Steuerberatungs GmbHsteuerundservice.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 |
43 | |||
| 25 |
PwC Legal Austriapwclegal.at
Global professional services leader with a legal network of over 3,700 professionals in 95 countries providing business and legal solutions worldwide |
35 | |||
| 26 |
Risk Experts Risiko Engineering GmbHriskexperts.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 |
30 | |||
| 27 |
Venionaire Capital AGvenionaire.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 |
24 | |||
| 28 |
FALCON | Tax | Audit | Advisory | virtual Servicesfal-con.eu
Provider of tax, accounting, payroll, financial advisory, and audit services with a focus on personal commitment, integration, communication, and integrity |
23 | |||
| 29 |
CQ Investment Groupc-quadrat.com
Specializes in quantitative and discretionary absolute and total return strategies aiming for sustainable growth for institutional and private investors. |
19 | |||
| 30 |
Finnoconsultfinnoconsult.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 |
17 | |||
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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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