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.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
OMV Petromomvpetrom.com
Largest integrated energy producer in Southeastern Europe, hydrocarbon production, refining capacity, power plant operation, and retail fuel stations. |
6,697 | |||
| 2 |
University POLITEHNICA of Bucharestupb.ro
Training specialists in technical fields through education, research, and innovation to support technological, economic, and socio-cultural progress. |
2,914 | |||
| 3 |
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 |
2,593 | |||
| 4 |
Bitdefenderbitdefender.com
Leading cybersecurity company providing threat prevention, detection, and response solutions globally, protecting consumer, business, and government environments, and enabling cyber resiliency worldwide. |
2,307 | |||
| 5 |
Conectysconectys.com
Provides AI-powered, human-led outsourcing services including contact center management, content moderation, data annotation, and digital transformation globally. |
1,871 | |||
| 6 |
Orange Servicesorange.com
A technology services company with expertise in IT, mobile networks, and commercial functions Provides a range of services internationally Passionate about innovation |
1,348 | |||
| 7 |
KPMG Romaniakpmg.com
Providing audit, tax, and advisory services with deep industry knowledge to help businesses navigate complex and fast-moving environments. |
1,240 | |||
| 8 |
Accenture Romaniaaccenture.com
Provides professional services, leveraging digital, cloud, and security expertise. Offers strategy, consulting, interactive, technology, and operations across over 40 industries, serving global clients. |
1,035 | |||
| 9 |
Arabesquearabesque.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. |
1,016 | |||
| 10 |
Romstalcariere.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. |
838 | |||
| 11 |
PwC Romaniapwc.ro
Global network providing assurance advisory and tax services to build trust and solve important problems through 364,780 professionals across 136 countries worldwide. |
693 | |||
| 12 |
Intesa Sanpaolo Bank Romaniaintesasanpaolobank.ro
Financial institution offering banking products, services to retail customers, SMEs, and corporations in Romania and internationally, with a focus on growth and quality. |
673 | |||
| 13 |
CGS Nexus Romaniaromania.cgsinc.com
Outsourcing customer service, technical support, telesales, and telemarketing for multinational clients across IT, telecom, banking, and retail sectors. |
649 | |||
| 14 |
ENGIE Romaniaengie.ro
ENGIE is committed to creating smart solutions, unique experiences, and stronger communities through the mobilization of all energies |
622 | |||
| 15 |
ALTEN Romaniaaltenromania.ro
Provider of development support in research, innovation, information systems, and engineering with a focus on IT and engineering services for various industries |
569 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
NEPI Rockcastlenepirockcastle.com
Ownership, operation, and development of retail shopping centres across Central and Eastern Europe with a portfolio worth €8 billion. |
510 | |||
| 17 |
SYNERGY CONSTRUCTsyncons.eu
Leading general contracting firm providing sustainable design and build services for industrial facilities, energy projects, and large scale commercial buildings across Europe. |
505 | |||
| 18 | 491 | ||||
| 19 |
MassMutual Romaniacareers.massmutualromania.com
Development of software and data science solutions to enhance digital capabilities and support growth for a leading financial services company. |
408 | |||
| 20 | 379 | ||||
| 21 |
Ministry of Foreign Affairs of Romaniamae.ro
This institution implements Romania's foreign policy by participating in EU, NATO, and other international organizations, while supporting Romanian citizens abroad |
366 | |||
| 22 |
Saint-Gobain Romaniasaint-gobain.ro
Design, production, and distribution of sustainable construction materials and solutions for industrial and building markets, focusing on renovation and decarbonization. |
272 | |||
| 23 |
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. |
272 | |||
| 24 |
MagnaPharm Marketing & Sales Romania
Integrated pharmaceutical services including import, distribution, market access, marketing, medical promotion, and regulatory support across Central and Eastern Europe. |
202 | |||
| 25 |
Up Româniaupromania.ro
Offers clients and partners integrated services simplifying interactions, processes, and decisions through human understanding, empathy, and social responsibility best practices. |
191 | |||
| 26 |
Edenred Romaniaedenred.ro
A market leader in payment solutions, connecting millions of employees and merchants through tailored payment solutions for meals, transportation, incentives, and corporate expenses |
152 | |||
| 27 |
IT Smart Systemsitsmartsystems.eu
A Digital Business Transformation company in Europe, specializing in Digital Customer Experience, Identity Access Management, Service Oriented Architecture, and Smart Fintech products |
109 | |||
| 28 |
INNOBYTEinnobyte.com
Development and delivery of scalable web and eCommerce solutions, consulting, audits, and maintenance for medium and large international brands. |
59 | |||
| 29 |
Mediatel Datamediatel.ro
Development and implementation of advanced AI-driven solutions and complex systems for call and contact centers across multiple global industries. |
53 | |||
| 30 |
DocProcessdoc-process.com
It provides a platform for companies to automate and streamline processes, connecting clients, suppliers, and partners across various workflows. |
32 | |||
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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.