Company lists · Data refreshed September 2026

Top 25 Transit authority engineering services based in Greece

Name: Transit authority engineering services based in Greece
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 112 companies tracked

RevenueBase identified 112 transit authority engineering services headquartered in Greece as of September 2026 and tracks 1,456 professional contacts across them, including 351 with verified work emails. Athens is the largest hub.

This list covers transit authority engineering services headquartered in Greece, 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 19, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

112Companies

1,456Contacts tracked

351Verified emails

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The 25 largest transit authority engineering services based in Greece

Ranked by team size

Top 25 of 112 transit authority engineering services based in Greece, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to transit authority engineering services: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Salfo & Associates SA	Partial evidence	Athens, GreeceHQ checked Sep 19, 2026	201-500	361 contacts →
	Partial evidence “About SALFO & Associates SALFO & Associates SA is a premier Greek Engineering & Management Consulting firm, delivering excellence through innovation, integrity, and human-centric…” Source: RevenueBase Database · checked Sep 19, 2026
2	Samaras & Associates Sa-Consulting Engineers	Indirect evidence	Athens, GreeceHQ checked Sep 19, 2026	201-500	153 contacts →
	Indirect evidence “Η «Σαμαράς & Συνεργάτες Α.Ε- Σύμβουλοι Μηχανικοί» αποτελεί, σήμερα, τη μεγαλύτερη και αρτιότερα στελεχωμένη μελετητική και συμβουλευτική εταιρεία στην Ελλάδα.” Source: RevenueBase Database · checked Sep 19, 2026
3	C&m Engineering S.A	Partial evidence	Athens, GreeceHQ checked Sep 19, 2026	51-200	46 contacts →
	Partial evidence “C&M Engineering is a Consulting Engineering company, in Project Management & Control, Design & Engineering, Construction Management, operating in South-East Europe.” Source: RevenueBase Database · checked Sep 19, 2026
4	Nama Consulting Engineers And Planners SA	Indirect evidence	Athens, GreeceHQ checked Sep 19, 2026	51-200	45 contacts →
	Indirect evidence “NAMA Consulting Engineers and Planners SA was founded in Athens (GR) at the beginning of 1990.” Source: RevenueBase Database · checked Sep 19, 2026
5	Gaia SA	Indirect evidence	Thessaloniki, GreeceHQ checked Sep 19, 2026	51-200	45 contacts →
	Indirect evidence “GAIA S.A.” Source: RevenueBase Database · checked Sep 19, 2026
6	Roikos Engineering Consultants S.A	Indirect evidence	Metamorfosi, GreeceHQ checked Sep 19, 2026	51-200	32 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
7	Samaras & Partners Group Of Companies	Indirect evidence	Athens, GreeceHQ checked Sep 19, 2026	201-500	31 contacts →
	Indirect evidence “Ο Όμιλος «Σαμαράς & Συνεργάτες» κατέχει ηγετική θέση στην ελληνική αγορά ως ένας από τους πλέον ολοκληρωμένους μελετητικούς και συμβουλευτικούς οργανισμούς, παρέχοντας…” Source: RevenueBase Database · checked Sep 19, 2026
8	Aethon Engineering	Partial evidence	Athens, GreeceHQ checked Sep 19, 2026	11-50	24 contacts →
	Partial evidence “We are a company of engineers, programmers, analysts and consultants who engage in designing, planning and generating innovative and smart solutions for the civil engineering…” Source: RevenueBase Database · checked Sep 19, 2026
9	Domi S.A	Indirect evidence	Athens, GreeceHQ checked Sep 19, 2026	11-50	21 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
10	ANAX	Partial evidence	Neo Psychiko, GreeceHQ checked Sep 19, 2026	11-50	18 contacts →
	Partial evidence “ANAX provides Construction, Design & Engineering, Project Management, and Technical Consulting services for diverse projects in the private sector.” Source: RevenueBase Database · checked Sep 19, 2026
11	Liontos & Associates	Indirect evidence	Metamorfosi, GreeceHQ checked Sep 19, 2026	11-50	16 contacts →
	Indirect evidence “Liontos & Associates Ltd was established in 1998, having as an objective to provide consulting services regarding the design and management of complex technical projects.” Source: RevenueBase Database · checked Sep 19, 2026
12	Design And Application Engineers S.A	Partial evidence	Maroussi, GreeceHQ checked Sep 19, 2026	11-50	15 contacts →
	Partial evidence “The company offers complete services of design, consulting, supervision and management in civil engineering public and private projects, staffed with significant number of…” Source: RevenueBase Database · checked Sep 19, 2026
13	Ergopraxis S.A	Indirect evidence	Athens, GreeceHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
14	Redeplan Consultants	Partial evidence	Athens, GreeceHQ checked Sep 19, 2026	11-50	11 contacts →
	Partial evidence “Project & Programme Management, Engineeniring, Technical Assesor Services, Real Estate Advisory and Consulting, EPC Management (Engineering, Procurement, Construction), Circular…” Source: RevenueBase Database · checked Sep 19, 2026
15	SG Structures & Geotechnics	Indirect evidence	Athens, GreeceHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence “STRUCTURES & GEOTECHNICS (SG) is a dynamically growing company providing high-level consulting and design services.” Source: RevenueBase Database · checked Sep 19, 2026
16	Tekem SA Consulting Engineers	Partial evidence	Athens, GreeceHQ checked Sep 19, 2026	11-50	10 contacts →
	Partial evidence “TEKEM SA Consulting Engineers was founded in 1966 by Elias and Nikolas Cavoulacos and is one of the largest and long established Consulting Engineering bureaus in Athens, Greece.” Source: RevenueBase Database · checked Sep 19, 2026
17	Denco Transport Engineers LTD	Strong evidence	Marousi, GreeceHQ checked Sep 19, 2026	11-50	10 contacts →
	Strong evidence “DENCO TRANSPORT ENGINEERS Ltd (DENCO TRANSPORT) was founded in March 2011 by shareholders and long-term associates (since 1989) of DENCO Engineering Consultants S.A, having…” Source: RevenueBase Database · checked Sep 19, 2026
18	HM Engineering S.A	Partial evidence	Athens, GreeceHQ checked Sep 19, 2026	11-50	10 contacts →
	Partial evidence “The company’s main objective is to provide Engineering Consulting Services in designing and supervision of Buildings, Industrial installations and Infrastructure projects.” Source: RevenueBase Database · checked Sep 19, 2026
19	Mavrakis Consulting Engineers	Partial evidence	Salonica, GreeceHQ checked Sep 19, 2026	11-50	8 contacts →
	Partial evidence “MAVRAKIS CONSULTING ENGINEERS is a leading Greek Engineering Consultancy founded back in 1978.” Source: RevenueBase Database · checked Sep 19, 2026
20	Geotopo Engineers	Partial evidence	Athens, GreeceHQ checked Sep 19, 2026	11-50	8 contacts →
	Partial evidence “Athens, GR based engineering firm with regional offices on the island of Kythera and Heraklion, Crete which has been offering services since 2008.” Source: RevenueBase Database · checked Sep 19, 2026
21	Team E-M Consulting Engineers S.A	Indirect evidence	Athens, GreeceHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “TEAM E-M Consulting Engineers S.A.(TEAM E-M S.A.) is a professional consulting firm, certified according to EN ISO 9001:2008 by the TUV CERT Certification Body, offering its…” Source: RevenueBase Database · checked Sep 19, 2026
22	Insta Consultants Engineers	Indirect evidence	Athens, GreeceHQ checked Sep 19, 2026	11-50	6 contacts →
	Indirect evidence “INSTA Consultants Engineers LTD has been established in 1984 as K.” Source: RevenueBase Database · checked Sep 19, 2026
23	Idaion Engineering Consulting	Partial evidence	Zografou, GreeceHQ checked Sep 19, 2026	11-50	6 contacts →
	Partial evidence “Idaion is a highly innovative firm engaging in engineering, consulting and construction.” Source: RevenueBase Database · checked Sep 19, 2026
24	V. Grigoriadis & Partners	Indirect evidence	Thessaloniki, GreeceHQ checked Sep 19, 2026	1-10	6 contacts →
	Indirect evidence “Background V.” Source: RevenueBase Database · checked Sep 19, 2026
25	Diavasi Consulting	Strong evidence	Marousi, GreeceHQ checked Sep 19, 2026	1-10	5 contacts →
	Strong evidence “Founded in 1998 in Athens, Greece, Diavasi Consulting stands as a beacon of excellence in the realm of transportation engineering.” Source: RevenueBase Database · checked Sep 19, 2026

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: transit authority engineering services. 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 transit authority engineering services.
Partial evidence: Its own public description names part of transit authority engineering services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name transit authority engineering services. 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 112 transit authority engineering services based in Greece

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Transit authority engineering services based in Greece at a glance

As of Sep 19, 2026

24.1%Verified-email coverage

13.0Average contacts per company

11-50Median size (employees)

38.4%Largest-city concentration · Athens

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured worldwide rather than for Greece, so it is reported there. Company counts and contact totals on this page are exact for Greece, over 112 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 transit authority engineering services, 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 Greece whose own description of what they do matches “transit authority engineering services”. 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 transit authority engineering services), 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 transit authority engineering services, and records with no verified work email. Companies headquartered outside Greece 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, 351 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 19, 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.

Transit authority engineering services by metro

Transit authority engineering services in Athens43

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 transit authority engineering services, 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 transit authority engineering services are there based in Greece?

RevenueBase identified 112 transit authority engineering services headquartered in Greece 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?

Salfo & Associates SA, headquartered in Athens, tops this list with the largest team on record.

Which city has the most transit authority engineering services?

Athens leads with 43 headquartered companies, followed by Larissa (2) and Marousi (2).

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 351 verified decision-maker contacts tracked across these 112 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 19, 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.