Company lists · Data refreshed September 2026
Top 25 Infrastructure companies based in Romania
RevenueBase identified 189 infrastructure companies headquartered in Romania as of September 2026 and tracks 5,155 professional contacts across them, including 1,090 with verified work emails. Bucharest is the largest hub.
This list covers infrastructure companies headquartered in Romania, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 15, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest infrastructure companies based in Romania
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 465 contacts → | ||||
Indirect evidence “PORR Construct S.R.L.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 2 | 336 contacts → | ||||
Strong evidence “CFR Infrastructură este Compania Naţională de Căi Ferate „CFR” SA, companie care administrează infrastructura feroviară publică - desfăşoară o activitate de interes public şi…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 3 | 316 contacts → | ||||
Indirect evidence “Distribuție Energie Electrică Romania (DEER), parte a Grupului Electrica, este cel mai important operator național de rețele de distribuție a energiei electrice, cu o acoperire de…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 4 | 242 contacts → | ||||
Strong evidence “Concelex is THE integrated infrastructure company.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 5 | 223 contacts → | ||||
Strong evidence “An entrepreneurial success story started in 1997, and today Electrogrup is one of the main players in the infrastructure construction field in Romania.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 6 | 180 contacts → | ||||
Indirect evidence “Cu o tradiție de peste 120 de ani în domeniul energiei și un portofoliu de peste 3,5 milioane de clienți, suntem în prezent liderul pieței de furnizare a energiei electrice din…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 7 | 176 contacts → | ||||
Indirect evidence “We are a competitive, strong and trustworthy company in the sector of major electrical energy players.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 8 | 141 contacts → | ||||
Strong evidence “Eximprod is a Romanian group of companies with over 30 years of experience in energy infrastructure and integrated solutions.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 9 | 136 contacts → | ||||
Strong evidence “Teletrans is Romania’s critical energy infrastructure IT & C and SCADA operator.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 10 | 121 contacts → | ||||
Strong evidence “Premier Energy Group is one of the fastest growing privately-owned vertically integrated energy infrastructure companies in SEE and one of the largest renewable energy players in…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 11 | 99 contacts → | ||||
Indirect evidence “Companie cu capital integral privat romanesc.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 12 | 84 contacts → | ||||
Strong evidence “In today's world, technology is king, yet it runs on infrastructure.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 13 | 67 contacts → | ||||
Indirect evidence “Tecnic Consulting Engineering, a proud member of RCI Holding, has been delivering engineering excellence across Eastern Europe since 2007.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 14 | 65 contacts → | ||||
Indirect evidence “BEYOND THE DETAILS BTDConstruct & Ambient is a 100% Romanian company, established in 2013, which operates in the field of general constructions and public works.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 15 | 64 contacts → | ||||
Indirect evidence “GÜLERMAK este un antreprenor internațional de top in domeniul EPC, cunoscut pentru reputația și profesionalismul său.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 16 | 63 contacts → | ||||
Indirect evidence “SEARCH CORPORATION is one of the leading Romanian engineering companies, providing services of planning, design and consultancy for public administration authorities and private…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 17 | 58 contacts → | ||||
Indirect evidence “HABAU Romania is part of the family HABAU GROUP, an international full-service provider in the areas of building construction, civil engineering, precast construction, underground…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 18 | 53 contacts → | ||||
Indirect evidence “Companie privata cu o vastă experienta în domeniul constructiilor, având competenţe avansate si un portofoliu consistent format din construcţii civile, comerciale şi de energie…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 19 | 48 contacts → | ||||
Indirect evidence “In 2005, a team of young engineers from the field of energy, establishes ELEKTRA INVEST.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 20 | 48 contacts → | ||||
Indirect evidence “Restart Energy este o companie din prima linie în domeniul energiei care deține capital mixt româno-american.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 21 | 41 contacts → | ||||
Indirect evidence “Wiren's mission is to reshape the energy landscape by making sustainable energy universally accessible.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 22 | 34 contacts → | ||||
Strong evidence “OYL Company Holding AG operates in the road construction and infrastructure sector, providing comprehensive services including asphalt paving, rehabilitation works, and the…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 23 | 29 contacts → | ||||
Indirect evidence “Firma de constructii civile, de drumuri si edilitare” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 24 | 27 contacts → | ||||
Indirect evidence “Infiintata in anul S.C.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 25 | 27 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: infrastructure companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names infrastructure companies.
- Partial evidence
- Its own public description names part of infrastructure companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name infrastructure companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 189 infrastructure companies based in Romania
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Infrastructure companies based in Romania at a glance
As of Sep 15, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Romania, so it is reported there. Company counts and contact totals on this page are exact for Romania, over 189 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among infrastructure companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Romania whose own description of what they do matches “infrastructure companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names infrastructure companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among infrastructure companies, and records with no verified work email. Companies headquartered outside Romania are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 1,090 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 15, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Infrastructure companies by metro
- Infrastructure companies in Bucharest41
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names infrastructure companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many infrastructure companies are there based in Romania?
RevenueBase identified 189 infrastructure companies headquartered in Romania as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Porr România, headquartered in Bucharest, tops this list with the largest team on record.
Which city has the most infrastructure companies?
Bucharest leads with 41 headquartered companies, followed by Bucuresti (15) and Cluj-Napoca (9).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,090 verified decision-maker contacts tracked across these 189 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 15, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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