Company lists · Data refreshed November 2026

Top 25 Systems integration contractors based in Türkiye

RevenueBase identified 807 company matches for systems integration contractors associated with Türkiye as of November 2026 and tracks 12,495 professional contacts across them, including 2,854 with verified work emails. Istanbul is the largest hub.

This list covers company matches for systems integration contractors 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
807Companies
12,495Contacts tracked
2,854Verified emails
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The 25 largest systems integration contractors based in Türkiye

Ranked by team size
Top 25 of 807 company matches for systems integration contractors 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 matchİstanbul, TürkiyeHQ recorded Nov 6, 20261,001-5,000937 contacts →

Exact match

“Founded by Rıdvan Çelikel in 1986, Anel is a global contracting company with its expertise in MEP systems in large scale and challenging projects.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 2026501-1,000462 contacts →

Exact match

“1998 yılında kurulan Teknoser, günümüzde bilgi ve iletişim teknolojileri pazarının önde gelen sistem entegrasyon ve saha hizmetleri firmasıdır.”

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 matchAtasehir, TürkiyeHQ recorded Nov 6, 2026201-500351 contacts →

Exact match

“VBT is a technology company which established by a dedicate group of experts and gives support in international area.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 2026201-500291 contacts →

Exact match

“1992 yılında, üniversite döneminden birbirlerini tanıyan 5 kurucu ortak tarafından kurulan Bilgi Birikim Sistemleri; bugün ülkemizin en önemli Bilgi Teknolojileri sistem…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchAnkara, TürkiyeHQ recorded Nov 6, 20261,001-5,000277 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchAnkara, TürkiyeHQ recorded Nov 6, 2026501-1,000242 contacts →

Exact match

“İşletmenizi Geleceğe Taşıyoruz Destek Bilgisayar olarak, iş dünyasının teknoloji ve dijital dönüşüm yolculuğunda yenilikçi, öncü ve güvenilir bir yol arkadaşı olmak için…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchİstanbul, TürkiyeHQ recorded Nov 6, 202651-200160 contacts →

Exact match

“Sentim Information Technologies is one of the leading companies that introduced the computer technologies in Turkey and pioneered the development and spread of the same in the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchAnkara, TürkiyeHQ recorded Nov 6, 202651-200141 contacts →

Exact match

“Locksmith Software Technologies commenced its operations with the aim of producing most suitable and highest quality information technology solutions for its customers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchAnkara, TürkiyeHQ recorded Nov 6, 2026201-500139 contacts →

Exact match

“Prime Teknoloji, 30 yılı aşkın bilgi birikimi ve deneyimiyle, Türkiye genelinde 81 ildeki yaygın destek ve hizmet ağıyla özel sektör ve kamu müşterilerine uçtan uca teknoloji…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 202651-200123 contacts →

Exact match

“Founded in 1994, BIS is a leading technology and service provider delivering packaged application solutions as well as custom software development, frameworks, integration…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchİzmir, TürkiyeHQ recorded Nov 6, 202611-50123 contacts →

Exact match

“Our company is mainly a system integrator specialized in the fields of electronics, RF communications and security technologies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchÇankaya Mahallesi, TürkiyeHQ recorded Nov 6, 2026201-500121 contacts →

Exact match

“MCSistem elektromekanik sistem entegrasyonu yapan bir kuruluştur.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 2026201-500111 contacts →

Exact match

“1975 yılında Sabancı Holding bünyesinde kurulan BİMSA, 40 yıllık deneyimi ile Türkiye’nin önde gelen bilgi teknolojisi şirketlerindendir.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact 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
17Exact 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
18Exact 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
19Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 2026201-50090 contacts →

Exact match

“IST Systems, İstanbul Yeni Havalimanı için ICT altyapı, havacılık sistemleri tasarımı ve uygulanması amacıyla 2018 yılında kuruldu.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 202651-20088 contacts →

Exact match

“TBI - Telemobil provides its customers value added “IT solutions”, “Electrical Contracting” and “Building Automation” to increase their productivity and competitive advantage.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchAnkara, TürkiyeHQ recorded Nov 6, 202651-20087 contacts →

Exact match

“Sistem Entegrasyon | Yazılım Geliştirme | Veri Merkezi Çözümleri | IT Güvenlik Çözümleri | Danışmanlık Servisleri”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchİstanbul, TürkiyeHQ recorded Nov 6, 202651-20086 contacts →

Exact match

“Çatı Teknoloji, Türkiye genelinde 34 ildeki yaygın saha organizasyonu ile kurumsal müşterilere yönelik Network, Data Center ve kritik altyapı projelerini uçtan uca yöneten güçlü…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchIstanbul, TürkiyeHQ recorded Nov 6, 202651-20085 contacts →

Exact match

“Since 1998, Ateksis has been providing technologies that combine innovation, quality and reliability.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact 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
25Exact matchİçerenköy, TürkiyeHQ recorded Nov 6, 202651-20071 contacts →

Exact match

“Developing strong partners with the world's largest technology manufacturers, BNTPRO; While providing professional solutions for the needs of its customers, with its domestic…”

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

Showing 25 of 807 systems integration contractors based in Türkiye

See the full list, filter by size, metro and specialty, and access 2,854 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Systems integration contractors based in Türkiye at a glance

As of Nov 6, 2026
22.8%Verified-email coverage
15.5Average contacts per company
11-50Median size (employees)
34.3%Largest-city concentration · Istanbul
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
363
11-50
309
51-200
102
201-500
21
501-1,000
5
1,001-5,000
6

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 807 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 “systems integration contractors” 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 2,854 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 “systems integration contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many systems integration contractors are there based in Türkiye?

RevenueBase identified 807 company matches for systems integration contractors 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 systems integration contractors?

Istanbul leads with 277 company records, followed by Ankara (79) and Cankaya (27).

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 2,854 professional contacts with verified work emails tracked across these 807 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.

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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 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.