Company lists · Data refreshed September 2026

Top 25 Geotechnical engineering staffing companies based in Türkiye

Name: Geotechnical engineering staffing companies based in Türkiye
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 325 companies tracked

RevenueBase identified 325 geotechnical engineering staffing companies headquartered in Türkiye as of September 2026 and tracks 2,424 professional contacts across them, including 210 with verified work emails. Istanbul is the largest hub.

This list covers geotechnical engineering staffing companies headquartered in Türkiye, 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 28, 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 28, 2026 86% judged on-target in blind review

325Companies

2,424Contacts tracked

210Verified emails

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The 25 largest geotechnical engineering staffing companies based in Türkiye

Ranked by team size

Top 25 of 325 geotechnical engineering staffing companies based in Türkiye, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to geotechnical engineering staffing companies: 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	Kasktaş	Indirect evidence	Beşiktaş, TürkiyeHQ checked Sep 28, 2026	201-500	167 contacts →
	Indirect evidence “KASKTAŞ’ın doğuşu, 1957 yılında kurulan ve günümüzde dünyanın en büyük taahhüt firmaları arasında yer alan ENKA İnşaat ve Sanayi A.Ş.’ye dayanmaktadır.” Source: RevenueBase Database · checked Sep 28, 2026
2	İksa Mühendislik	Partial evidence	Ankara, TürkiyeHQ checked Sep 28, 2026	501-1,000	118 contacts →
	Partial evidence “IKSA Engineering Consultancy Construction Industry and Trade Inc; with its expert technical staff, numerous technological machinery and successfully concluded domestic and foreign…” Source: RevenueBase Database · checked Sep 28, 2026
3	Promer Consultancy Engineering INC	Partial evidence	Ankara, TürkiyeHQ checked Sep 28, 2026	51-200	102 contacts →
	Partial evidence “PROMER Müşavirlik Mühendislik A.Ş.® is an independent engineering-consultancy company offering various professional solutions and services for industries such as mining, power…” Source: RevenueBase Database · checked Sep 28, 2026
4	Sargin İnşaat VE Maki̇ne Sanayi̇ Ti̇caret A.Ş	Indirect evidence	Ankara, TürkiyeHQ checked Sep 28, 2026	1,001-5,000	99 contacts →
	Indirect evidence “We are a Turkish Construction Company that specialises in Tunnelling, Mining and other associated underground works.” Source: RevenueBase Database · checked Sep 28, 2026
5	Trakkom Engineering & Industries	Partial evidence	Maltepe, TürkiyeHQ checked Sep 28, 2026	51-200	83 contacts →
	Partial evidence “With over 15 years of experience in mechanized tunneling and heavy machinery & equipment, Trakkom Engineering offers sustainable global solutions for the partners all over the…” Source: RevenueBase Database · checked Sep 28, 2026
6	Zemin Etüd VE Tasarım A.Ş	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 28, 2026	51-200	52 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
7	EFK Engineering	Partial evidence	Çankaya, TürkiyeHQ checked Sep 28, 2026	51-200	44 contacts →
	Partial evidence “EFK Engineering is an engineering and design company established in 2004 in Ankara, Turkey.” Source: RevenueBase Database · checked Sep 28, 2026
8	Perform Mühendi̇sli̇k	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 28, 2026	51-200	36 contacts →
	Indirect evidence “HİZMET ALANLARIMIZ YÜKSEK YAPILAR ENDÜSTRİ VE ENERJİ TESİSLERİ TOPLU KONUTLAR HASTANELER TURİSTİK TESİSLER ve AVM'ler DEPREM GÜVENLİK ANALİZLERİ KENTSEL DÖNÜŞÜM PROJELERİ DİĞER…” Source: RevenueBase Database · checked Sep 28, 2026
9	Geodestek Ltd. ŞTI	Indirect evidence	Ankara, TürkiyeHQ checked Sep 28, 2026	11-50	32 contacts →
	Indirect evidence “GeoDestek Zemar Ltd.” Source: RevenueBase Database · checked Sep 28, 2026
10	AGM Mühendislik	Indirect evidence	Ankara, TürkiyeHQ checked Sep 28, 2026	11-50	31 contacts →
	Indirect evidence “AGM Mühendislik 1993 yılında Ankara'da kurulmuştur.” Source: RevenueBase Database · checked Sep 28, 2026
11	Ozifin Mining LTD	Partial evidence	Çankaya, TürkiyeHQ checked Sep 28, 2026	11-50	30 contacts →
	Partial evidence “Ozifin is an independent, international engineering and consulting company based in Turkey, providing comprehensive solutions to the mining industry and related sectors since 2016.” Source: RevenueBase Database · checked Sep 28, 2026
12	Sonar Drilling, Geological Survey And Geotechnical Services Co. INC	Strong evidence	Kazan, TürkiyeHQ checked Sep 28, 2026	201-500	28 contacts →
	Strong evidence “SONAR provides Geotechnical Construction and Engineering Services; such as Deep Excavation and Retaining Systems, Deep Foundations, Ground Improvement, Cut-Off Walls, and Ground…” Source: RevenueBase Database · checked Sep 28, 2026
13	Teknofor İnşaat Taah. Ltd. Şti̇	Partial evidence	Dilovası, TürkiyeHQ checked Sep 28, 2026	51-200	19 contacts →
	Partial evidence “Teknofor was established in and specializes about geotechnical and started to post tensioning work since 2009.” Source: RevenueBase Database · checked Sep 28, 2026
14	Ural Engineering	Partial evidence	Ankara, TürkiyeHQ checked Sep 28, 2026	51-200	15 contacts →
	Partial evidence “URAL Engineering Co.” Source: RevenueBase Database · checked Sep 28, 2026
15	LBA Design And Consultancy	Partial evidence	Ümraniye, TürkiyeHQ checked Sep 28, 2026	11-50	14 contacts →
	Partial evidence “LBA has been established in 2015 in order to give Engineering and Consultancy services.” Source: RevenueBase Database · checked Sep 28, 2026
16	Fides Mühendislik	Indirect evidence	Ankara, TürkiyeHQ checked Sep 28, 2026	11-50	13 contacts →
	Indirect evidence “Bünyesinde jeoloji, maden ve çevre mühendisliğinin yanı sıra çeşitli disiplinlerden oluşan tecrübeli uzman kadrosu ile her geçen gün büyümeye devam eden FİDES MÜHENDİSLİK…” Source: RevenueBase Database · checked Sep 28, 2026
17	FNC Petrol Madencilik Sanayi VE Ticaret AS	Indirect evidence	Ankara, TürkiyeHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “FNÇ Mühendislik yerbilimleri konusundaki deneyimi ve bilgi birikimi ile mühendislik ve danışmanlık hizmeti vermek amacı ile kurulmuştur.” Source: RevenueBase Database · checked Sep 28, 2026
18	MBY	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 28, 2026	1-10	11 contacts →
	Indirect evidence “Founded in 2011 Istanbul, MBY has taken part in iconic projects all around the globe, spanning five continents.” Source: RevenueBase Database · checked Sep 28, 2026
19	INR Consulting & Engineering INC	Strong evidence	Cankaya, TürkiyeHQ checked Sep 28, 2026	11-50	11 contacts →
	Strong evidence “INR provides worldwide consulting and engineering services especially in mining projects mainly associated with geological, geotechnical, and hydraulic engineering disciplines.” Source: RevenueBase Database · checked Sep 28, 2026
20	Geomed Geotechnical Consultancy, Design And Supervision	Indirect evidence	Ankara, TürkiyeHQ checked Sep 28, 2026	11-50	11 contacts →
	Indirect evidence “TR (EN & FR see below) Geomed yılından beri geoteknik mühendisliği uzmanlığı gerektiren işlerde müşterilerine hızlı, kaliteli ve yenilikçi çözümler sunan bir proje firmasıdır.” Source: RevenueBase Database · checked Sep 28, 2026
21	Progeo Proje Mühendislik	Indirect evidence	Ankara, TürkiyeHQ checked Sep 28, 2026	11-50	10 contacts →
	Indirect evidence “Deneyimli ve uzman kadrosuyla PROGEO Proje, Zemin ve Temel Mühendisliği (Geoteknik) alanlarında hizmet veren bir firmadır.” Source: RevenueBase Database · checked Sep 28, 2026
22	MAG Engineering Services	Partial evidence	Kartal, TürkiyeHQ checked Sep 28, 2026	11-50	9 contacts →
	Partial evidence “Our company has always targetted providing quality engineering services by following the latest technology with its knowledge and experience on Marine Structures for more than 30…” Source: RevenueBase Database · checked Sep 28, 2026
23	Bridgewiz International Engineering And Consulting	Partial evidence	Ankara, TürkiyeHQ checked Sep 28, 2026	1-10	8 contacts →
	Partial evidence “Trusted Source of Fast and Professional Answers for Bridge Engineering” Source: RevenueBase Database · checked Sep 28, 2026
24	Hidrowell	Indirect evidence	Ankara, TürkiyeHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect evidence “Hidrowell Mühendislik Müşavirlik Ltd.” Source: RevenueBase Database · checked Sep 28, 2026
25	CMF Makina	Indirect evidence	Gebze, TürkiyeHQ checked Sep 28, 2026	11-50	6 contacts →
	Indirect evidence “Piling & Ground Improvement Equipment Providers” Source: RevenueBase Database · checked Sep 28, 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: geotechnical engineering staffing 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 geotechnical engineering staffing companies.
Partial evidence: Its own public description names part of geotechnical engineering staffing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name geotechnical engineering staffing 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 325 geotechnical engineering staffing companies based in Türkiye

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Geotechnical engineering staffing companies based in Türkiye at a glance

As of Sep 28, 2026

8.7%Verified-email coverage

7.5Average contacts per company

1-10Median size (employees)

18.2%Largest-city concentration · Istanbul

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

184

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Türkiye, so it is reported there. Company counts and contact totals on this page are exact for Türkiye, over 325 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 geotechnical engineering staffing 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 Türkiye whose own description of what they do matches “geotechnical engineering staffing 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 geotechnical engineering staffing 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 geotechnical engineering staffing companies, and records with no verified work email. Companies headquartered outside Türkiye 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, 210 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 28, 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.

Geotechnical engineering staffing companies by metro

Geotechnical engineering staffing companies in Ankara51

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 geotechnical engineering staffing 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 geotechnical engineering staffing companies are there based in Türkiye?

RevenueBase identified 325 geotechnical engineering staffing companies headquartered in Türkiye 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?

Kasktaş, headquartered in Besiktas, tops this list with the largest team on record.

Which city has the most geotechnical engineering staffing companies?

Istanbul leads with 59 headquartered companies, followed by Ankara (51) and Cankaya (27).

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 210 verified decision-maker contacts tracked across these 325 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 28, 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.