Company lists · Data refreshed November 2026

Top 25 Infrastructure systems consultants based in Türkiye

RevenueBase identified 1,088 company matches for infrastructure systems consultants associated with Türkiye as of November 2026 and tracks 32,113 professional contacts across them, including 11,330 with verified work emails. Istanbul is the largest hub.

This list covers company matches for infrastructure systems consultants associated with Türkiye, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
1,088Companies
32,113Contacts tracked
11,330Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest infrastructure systems consultants based in Türkiye

Ranked by team size
Top 25 of 1,088 company matches for infrastructure systems consultants based in Türkiye, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 2026501-1,0001,573 contacts →

Exact match

“KoçSistem is the leader in information technologies pioneering the sector since 1945, serving both in Turkey and in more than 30 countries from Azerbaijan to Saudi Arabia, from…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchAnkara, TürkiyeHQ recorded Nov 6, 202610001+1,130 contacts →

Exact match

“Mapa Group has emerged as a global leader in the engineering and construction industry, now spanning three continents.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchAnkara, TürkiyeHQ recorded Nov 6, 2026201-500411 contacts →

Exact match

“Expertise in Design, Engineering & Consultancy” PROKON Engineering & Consultancy Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchİçerenköy, TürkiyeHQ recorded Nov 6, 2026201-500404 contacts →

Exact match

“1995’te Eresoft adıyla kurulan ve 1997’de SAP’nin Türkiye’deki ilk yerel iş ortağı olan şirketimiz, 2005 yılında 10 farklı ülkede faaliyet gösteren BTC Group bünyesine katılarak…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchKucukcekmece, TürkiyeHQ recorded Nov 6, 20261,001-5,000374 contacts →

Exact match

“IRIS AS headquartered in Istanbul.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchAnkara, TürkiyeHQ recorded Nov 6, 20265,001-10,000322 contacts →

Exact match

“EKON is a leading engineering & construction company for establishing infrastructure and integrated industrial projects from the planning and design stages, through engineering…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchAnkara, TürkiyeHQ recorded Nov 6, 2026201-500212 contacts →

Exact match

“TEMELSU is a well known Turkish consulting engineering company which provides multidisciplinary engineering services, locally and internationally, since its foundation in 1969.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchAnkara, TürkiyeHQ recorded Nov 6, 2026501-1,000207 contacts →

Exact match

“ELTEMTEK A.Ş olarak temel mühendislik hizmetlerinden, yatırım danışmanlığına; işletme hizmetlerine, sistem analiz etütlerine, harita ve kamulaştırma hizmetlerine uzanan geniş bir…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchAnkara, TürkiyeHQ recorded Nov 6, 2026201-500198 contacts →

Exact match

“Founded in 1985, Prota Engineering is a pioneering design firm with a global footprint, having executed over projects spanning across 25 countries, having offices in Turkey…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchAnkara, TürkiyeHQ recorded Nov 6, 2026201-500185 contacts →

Exact match

“Founded in 1971, DOLSAR is a multi-disciplinary engineering firm offering engineering, architectural, consultancy and supervision services for large-scale projects in a wide range…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 2026201-500150 contacts →

Exact match

“Since 2004, ARETE has been providing all kinds of business, product, process, technology and integration services required to use SAP and the systems and technologies other than…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 2026201-500125 contacts →

Exact match

“CottGroup® is a holistic service organization that offers a full range of consulting, outsourcing, technology, and training services to manage operations and provide practical…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchUmitkoy, TürkiyeHQ recorded Nov 6, 2026201-500116 contacts →

Exact match

“MEGA Engineering Consulting Inc, established in 1993, is a multidisciplinary firm that provides engineering, design, construction supervision and project management services for a…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchKadikoy, TürkiyeHQ recorded Nov 6, 202651-200109 contacts →

Exact match

“Infonal is a technology services and IT consultancy company providing deeply enterprise software architecture and domain specific know how.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchAnkara, TürkiyeHQ recorded Nov 6, 2026201-50097 contacts →

Exact match

“ALTER International is an independent group of consultants providing science and technology based solutions for multi-disciplinary projects.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 202651-20096 contacts →

Exact match

“Deka Technology, started in Istanbul as a small company with the desire for being the best in its area, is here for companies around the world since 2017.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchİstanbul, TürkiyeHQ recorded Nov 6, 2026201-50094 contacts →

Exact match

“KG Teknoloji’s know-how and experience dates back to the year of 2003.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchAnkara, TürkiyeHQ recorded Nov 6, 202651-20083 contacts →

Exact match

“WYG is an award-winning professional services firm employing over 1,600 people and operating from more than 50 locations across the UK, Europe, Africa, Asia and the Middle East.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchŞişli, TürkiyeHQ recorded Nov 6, 202651-20078 contacts →

Exact match

“Since our founding in 1997, we have worked to provide value to our customers by offering customized services with a focus on technology.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 202651-20077 contacts →

Exact match

“Maro was founded in 2010 by experienced IT visionary Lale Maro, with the aim of offering superior technologies for various sectors alongside its work in sectors leading…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchAnkara, TürkiyeHQ recorded Nov 6, 202651-20077 contacts →

Exact match

“Founded in 2004, BCT Architecture Engineering Consulting Company has established its local offices in different regions of Turkey in order to keep up with the demand from…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchİstanbul, TürkiyeHQ recorded Nov 6, 202651-20075 contacts →

Exact match

“Natica is a technology consultancy and services firm specializing in delivering success to its clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchCankaya, TürkiyeHQ recorded Nov 6, 202651-20073 contacts →

Exact match

“Famer Group is an international independent consulting company, offering Planning, Architectural, Engineering Design and Management services for construction projects.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 202651-20069 contacts →

Exact match

“vMind, offering systems integration and technology services with advanced degrees of expertise in national and international market, also with innovative and effective solutions…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchÇankaya, TürkiyeHQ recorded Nov 6, 202611-5061 contacts →

Exact match

“Arksoft was founded by the experts on their domains and gives the consultancy services to Turkey's largest enterprises and government organizations by it's unique team.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,088 infrastructure systems consultants based in Türkiye

See the full list, filter by size, metro and specialty, and access 11,330 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Infrastructure systems consultants based in Türkiye at a glance

As of Nov 6, 2026
35.3%Verified-email coverage
29.5Average contacts per company
1-10Median size (employees)
29.6%Largest-city concentration · Istanbul
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
555
11-50
370
51-200
96
201-500
42
501-1,000
16
1,001-5,000
5
5,001-10,000
1
10001+
3

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 1,088 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Türkiye whose business descriptions match “infrastructure systems consultants” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 11,330 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “infrastructure systems consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many infrastructure systems consultants are there based in Türkiye?

RevenueBase identified 1,088 company matches for infrastructure systems consultants associated with Türkiye as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Koçsistem tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most infrastructure systems consultants?

Istanbul leads with 322 company records, followed by Ankara (164) and Cankaya (80).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 11,330 professional contacts with verified work emails tracked across these 1,088 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 1,088 infrastructure systems consultants based in Türkiye. Start with a free account, no credit card.

Download this list →

Related lists

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 SmartSearch, 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.