| # | Company | Employees |
|---|---|---|
| 1 |
Wiener Stadtwerke GmbHwienerstadtwerke.at
The company group in Vienna ensures reliable energy, mobility, and public services while actively pursuing a sustainable climate transition with innovative solutions |
15,000 |
| 2 |
A1 Telekom Austria Groupa1.group
Leading digital services and communications provider in Central and Eastern Europe, enabling connectivity, digital business, and lifestyle for over 24 million users. |
12,320 |
| 3 |
Erste Grouperstegroup.com
A leading financial institute in Central and Eastern Europe, providing banking services to millions of customers, promoting career growth and innovation |
5,859 |
| 4 |
Raiffeisen Bank International AGrbinternational.com
A leading banking group in Austria and CEE, offering a variety of financial services through subsidiary banks and other providers to millions of customers |
5,107 |
| 5 |
DO & CO AGdoco.com
An Austrian company offering gourmet entertainment worldwide through Airline Catering, Event Catering, and Restaurants, dedicated to delivering exceptional quality and service |
4,937 |
| 6 |
Raiffeisen Bankengrupperaiffeisen.at
A leading banking group with regional central banks and independent branches, employing 24,700 people in 1,955 locations |
4,377 |
| 7 |
A1 Telekom Austria AGjobs.a1.com
Provider of internet, voice, TV, and IT services in Austria, with a focus on sustainability and a range of digital solutions Part of a larger telecommunications group in Central and Eastern Europe |
4,226 |
| 8 |
Österreichische Post AGpost.at
An international post, logistics, and service conglomerate in Austria, with a wide reach in transportation, delivery services, e-commerce, and digital solutions |
3,080 |
| 9 |
Erste Bank und Sparkassesparkasse.at
A leading financial institute in Central and Eastern Europe, offering banking services, financing for families, support for entrepreneurs, and creating innovative products |
2,970 |
| 10 |
UniCredit Bank Austria AGbankaustria.at
A leading Austrian bank within the UniCredit network, focused on empowering communities and unlocking potential across Europe with a common culture of integrity and ownership |
2,684 |
| 11 |
Wiener Städtische Versicherungwienerstaedtische.at
A leading insurance company in Austria, part of VIENNA INSURANCE GROUP, offering reliable and innovative insurance products with a focus on customer satisfaction for over 190 years |
2,250 |
| 12 |
BAWAG Groupbawaggroup.com
Provides savings, payment, lending, leasing, investment, factoring, insurance products across multiple countries for retail and corporate customers. |
1,979 |
| 13 |
Addiko Bank AGaddiko.com
A consumer and SME specialist banking group in CSEE, offering unsecured personal loans, working capital loans, and payment services |
1,634 |
| 14 |
Magenta Telekommagenta.at
Leading Austrian provider of internet, mobile, entertainment, and business solutions with advanced broadband and digital technologies for customers. |
1,338 |
| 15 |
Raiffeisenraiffeisen.at
Cooperative banking group emphasizing community strength, mutual support, and collective power to achieve financial and social goals together. |
1,263 |
| 16 |
Volksbankvolksbank.at
A trusted bank in Austria serving entrepreneurs and individuals, focusing on trust, sustainability, and regional support for over 170 years |
1,236 |
| 17 |
Drei Österreichdrei.at
A leading mobile provider in Austria, offering innovative digital solutions like fast broadband internet, mobile TV, and music services with extensive customer support |
946 |
| 18 |
Raiffeisenlandesbank Niederösterreich-Wien AGraiffeisen.at
A modern regional and commercial bank in Eastern Austria focused on building long-term customer relationships, following Raiffeisen's principles and supporting social causes and sustainability |
895 |
| 19 |
Casinos Austria AGcasinos.at
Leading gaming operator since 1968 with twelve Austrian casinos offering a wide range of entertainment, including roulette, black jack, poker, jackpot, and award-winning cuisine |
816 |
| 20 |
DONAU Versicherung AG Vienna Insurance Groupdonauversicherung.at
An Austrian company with over 150 years of experience, providing insurance services to protect what matters most to people across the country |
622 |
| 21 |
Peek & Cloppenburg Österreichkarriere.peek-cloppenburg.at
A leading European fashion retailer with 160 stores in 16 countries, offering diverse career opportunities, personal development, and a supportive work environment |
597 |
| 22 |
Allianz Österreichallianz.at
A leading financial service provider in Austria offering insurance, retirement planning, and wealth management solutions to over 115 million customers since 1860 |
347 |
| 23 |
FREYWILLEshop.freywille.com
Creation of handmade luxury jewellery combining 24 karat gold and vibrant fire enamel, blending artistry and craftsmanship globally. |
148 |
| 24 |
SIGNA Group of Companiessigna.at
Development and management of real estate projects and holdings in brick-and-mortar and online retail across Europe. |
92 |
| 25 |
VAN GRAAF GmbH & Co. KGvangraaf.com
A leading fashion company in Europe offering quality, diverse and expertly curated fashion from over 200 exclusive brands through stores and online |
78 |
| 26 |
VakıfBank International AGvakifbank.at
A financial institution based in Vienna with branch network in Austria and Germany, providing various banking services to customers |
57 |
| 27 |
Joseph Brotjoseph.co.at
The company specializes in crafting high-quality, organic sourdough breads, pastries, and savory dishes while prioritizing sustainable practices and responsible sourcing |
37 |
| 28 |
Addicted to Rock Gastronomie Gmbhaddicted.at
Successful burger and G&T concept with a second location in Vienna Offers two high rooms for private and B2B events |
3 |
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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 24, 2026.
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