# The 30 largest multinational companies in Bucharest
Tamtam tracks 31 multinational companies headquartered in Bucharest. This list ranks the 30 largest by number of employees on LinkedIn, led by OMV Petrom, University POLITEHNICA of Bucharest and Rompetrol (KMG International). Their median headcount is 569. Half of them were founded in 1999 or later.
The multinational companies in Bucharest are predominantly large firms in the energy sector, IT services, and professional consulting. Notable examples include OMV Petrom, the largest integrated energy producer in Southeastern Europe, and Rompetrol, a multinational energy company. Bitdefender is a cybersecurity firm, while Accenture Romania provides professional services leveraging digital, cloud, and security expertise. KPMG Romania offers audit, tax, and advisory services.
The data shows a strong presence of companies founded in the 1990s and early 2000s, indicating a period of significant economic development. Many of these companies, such as Conectys and CGS Nexus Romania, specialize in outsourcing and offshoring consulting, highlighting Bucharest's role as a regional hub for such services. The presence of higher education institutions like University POLITEHNICA of Bucharest also supports the development of a skilled workforce for these industries.
π·π΄ Bucharest Β· 30 companies Β· Updated Nov 12, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [OMV Petrom](https://www.tamtam.ai/c/omv-petrom) (omvpetrom.com)
Largest integrated energy producer in Southeastern Europe, hydrocarbon production, refining capacity, power plant operation, and retail fuel stations. | Oil and Gas | π·π΄ Bucharest | 6,697 | 1991 |
| 2 | [University POLITEHNICA of Bucharest](https://www.tamtam.ai/c/university-politehnica-of-bucharest) (upb.ro)
Training specialists in technical fields through education, research, and innovation to support technological, economic, and socio-cultural progress. | Higher Education | π·π΄ Bucharest | 2,914 | 1818 |
| 3 | [Rompetrol (KMG International)](https://www.tamtam.ai/c/rompetrol-kmg-international) (rompetrol.com)
A multinational energy company with 5,000 employees in 11 countries, focused on providing sustainable energy solutions through refining, petrochemicals, and retail activities | Oil and Gas | π·π΄ Bucharest | 2,593 | 1974 |
| 4 | [Bitdefender](https://www.tamtam.ai/c/bitdefender) (bitdefender.com)
Leading cybersecurity company providing threat prevention, detection, and response solutions globally, protecting consumer, business, and government environments, and enabling cyber resiliency worldwide. | Software Development | π·π΄ Bucharest | 2,307 | |
| 5 | [Conectys](https://www.tamtam.ai/c/conectys) (conectys.com)
Provides AI-powered, human-led outsourcing services including contact center management, content moderation, data annotation, and digital transformation globally. | Outsourcing and Offshoring Consulting | π·π΄ Bucharest | 1,871 | 2004 |
| 6 | [Orange Services](https://www.tamtam.ai/c/orange-services) (orange.com)
A technology services company with expertise in IT, mobile networks, and commercial functions Provides a range of services internationally Passionate about innovation | IT Services and IT Consulting | π·π΄ Bucharest | 1,348 | 2013 |
| 7 | [KPMG Romania](https://www.tamtam.ai/c/kpmg-romania) (kpmg.com)
Providing audit, tax, and advisory services with deep industry knowledge to help businesses navigate complex and fast-moving environments. | Business Consulting and Services | π·π΄ Bucharest | 1,240 | 1995 |
| 8 | [Accenture Romania](https://www.tamtam.ai/c/accenture-romania) (accenture.com)
Provides professional services, leveraging digital, cloud, and security expertise. Offers strategy, consulting, interactive, technology, and operations across over 40 industries, serving global clients. | IT Services and IT Consulting | π·π΄ Bucharest | 1,035 | 2000 |
| 9 | [Arabesque](https://www.tamtam.ai/c/arabesque) (arabesque.ro)
Regional wholesale distributor of construction materials and finishing products providing technical counseling, material processing, and on-site delivery via a large specialized truck fleet. | Wholesale Building Materials | π·π΄ Bucharest | 1,016 | 1994 |
| 10 | [Romstal](https://www.tamtam.ai/c/romstal) (cariere.romstal.ro)
Commercialization of installation equipment for construction through a regional network of stores and logistics centers, providing modern solutions for residential and industrial projects. | Wholesale Building Materials | π·π΄ Bucharest | 838 | 1994 |
| 11 | [PwC Romania](https://www.tamtam.ai/c/pwc-romania) (pwc.ro)
Global network providing assurance advisory and tax services to build trust and solve important problems through 364,780 professionals across 136 countries worldwide. | Accounting | π·π΄ Bucharest | 693 | |
| 12 | [Intesa Sanpaolo Bank Romania](https://www.tamtam.ai/c/intesa-sanpaolo-bank-romania) (intesasanpaolobank.ro)
Financial institution offering banking products, services to retail customers, SMEs, and corporations in Romania and internationally, with a focus on growth and quality. | Banking | π·π΄ Bucharest | 673 | 1999 |
| 13 | [CGS Nexus Romania](https://www.tamtam.ai/c/cgs-nexus-romania) (romania.cgsinc.com)
Outsourcing customer service, technical support, telesales, and telemarketing for multinational clients across IT, telecom, banking, and retail sectors. | Outsourcing and Offshoring Consulting | π·π΄ Bucharest | 649 | 2002 |
| 14 | [ENGIE Romania](https://www.tamtam.ai/c/engie-romania) (engie.ro)
ENGIE is committed to creating smart solutions, unique experiences, and stronger communities through the mobilization of all energies | Utilities | π·π΄ Bucharest | 622 | |
| 15 | [ALTEN Romania](https://www.tamtam.ai/c/alten-romania) (altenromania.ro)
Provider of development support in research, innovation, information systems, and engineering with a focus on IT and engineering services for various industries | IT Services and IT Consulting | π·π΄ Bucharest | 569 | 2006 |
| 16 | [NEPI Rockcastle](https://www.tamtam.ai/c/nepi-rockcastle) (nepirockcastle.com)
Ownership, operation, and development of retail shopping centres across Central and Eastern Europe with a portfolio worth β¬8 billion. | Leasing Non-residential Real Estate | π·π΄ Bucharest | 510 | |
| 17 | [SYNERGY CONSTRUCT](https://www.tamtam.ai/c/synergy-construct) (syncons.eu)
Leading general contracting firm providing sustainable design and build services for industrial facilities, energy projects, and large scale commercial buildings across Europe. | Construction | π·π΄ Bucharest | 505 | 2001 |
| 18 | [rinf.tech](https://www.tamtam.ai/c/rinf-tech) (rinf.tech)
custom software development and R&D solutions specializing in digital products, automotive technology, embedded systems, and technology modernization services | IT Services and IT Consulting | π·π΄ Bucharest | 491 | 2006 |
| 19 | [MassMutual Romania](https://www.tamtam.ai/c/massmutual-romania) (careers.massmutualromania.com)
Development of software and data science solutions to enhance digital capabilities and support growth for a leading financial services company. | IT Services and IT Consulting | π·π΄ Bucharest | 408 | |
| 20 | [Zitec](https://www.tamtam.ai/c/zitec) (zitec.com)
Delivers full-stack software development, cloud computing, testing, and online marketing services, turning new ideas into novel projects for clients. | Software Development | π·π΄ Bucharest | 379 | 2003 |
| 21 | [Ministry of Foreign Affairs of Romania](https://www.tamtam.ai/c/ministry-of-foreign-affairs-of-romania) (mae.ro)
This institution implements Romania's foreign policy by participating in EU, NATO, and other international organizations, while supporting Romanian citizens abroad | International Affairs | π·π΄ Bucharest | 366 | 1862 |
| 22 | [Saint-Gobain Romania](https://www.tamtam.ai/c/saint-gobain-romania) (saint-gobain.ro)
Design, production, and distribution of sustainable construction materials and solutions for industrial and building markets, focusing on renovation and decarbonization. | Wholesale Building Materials | π·π΄ Bucharest | 272 | 1994 |
| 23 | [Deutsche Telekom Services Europe Romania (DTSE Romania)](https://www.tamtam.ai/c/deutsche-telekom-services-europe-romania-dtse-romania) (dtse.ro)
Delivers essential support services for Deutsche Telekom Group across Europe, specializing in Human Resources, Finance, Accounting, and Reporting with a focus on customer experience. | Outsourcing and Offshoring Consulting | π·π΄ Bucharest | 272 | |
| 24 | [MagnaPharm Marketing & Sales Romania](https://www.tamtam.ai/c/magnapharm-marketing-and-sales-romania)
Integrated pharmaceutical services including import, distribution, market access, marketing, medical promotion, and regulatory support across Central and Eastern Europe. | Pharmaceutical Manufacturing | π·π΄ Bucharest | 202 | 1994 |
| 25 | [Up RomΓ’nia](https://www.tamtam.ai/c/up-romania) (upromania.ro)
Offers clients and partners integrated services simplifying interactions, processes, and decisions through human understanding, empathy, and social responsibility best practices. | Financial Services | π·π΄ Bucharest | 191 | 1964 |
| 26 | [Edenred Romania](https://www.tamtam.ai/c/edenred-romania) (edenred.ro)
A market leader in payment solutions, connecting millions of employees and merchants through tailored payment solutions for meals, transportation, incentives, and corporate expenses | Financial Services | π·π΄ Bucharest | 152 | 1999 |
| 27 | [IT Smart Systems](https://www.tamtam.ai/c/it-smart-systems) (itsmartsystems.eu)
A Digital Business Transformation company in Europe, specializing in Digital Customer Experience, Identity Access Management, Service Oriented Architecture, and Smart Fintech products | Software Development | π·π΄ Bucharest | 109 | 2002 |
| 28 | [INNOBYTE](https://www.tamtam.ai/c/innobyte) (innobyte.com)
Development and delivery of scalable web and eCommerce solutions, consulting, audits, and maintenance for medium and large international brands. | Software Development | π·π΄ Bucharest | 59 | 2006 |
| 29 | [Mediatel Data](https://www.tamtam.ai/c/mediatel-data) (mediatel.ro)
Development and implementation of advanced AI-driven solutions and complex systems for call and contact centers across multiple global industries. | Software Development | π·π΄ Bucharest | 53 | 1996 |
| 30 | [DocProcess](https://www.tamtam.ai/c/docprocess) (doc-process.com)
It provides a platform for companies to automate and streamline processes, connecting clients, suppliers, and partners across various workflows. | IT Services and IT Consulting | π·π΄ Bucharest | 32 | 2005 |
## 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 12, 2026.
## More company lists in Bucharest
- [The largest companies in Bucharest](https://www.tamtam.ai/l/largest-companies-bucharest) (85)
## The same list elsewhere in Romania
- [Multinational companies in Romania](https://www.tamtam.ai/l/multinational-companies-romania) (55)
## The same list elsewhere
- [Multinational companies in the world](https://www.tamtam.ai/l/multinational-companies-in-the-world) (74,925)
- [Multinational companies in Europe](https://www.tamtam.ai/l/multinational-companies-in-europe) (42,025)
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Source: https://www.tamtam.ai/l/multinational-companies-bucharest