Company lists · Data refreshed September 2026
Top 25 Systems integration companies based in Türkiye
RevenueBase identified 714 systems integration companies headquartered in Türkiye as of September 2026 and tracks 10,142 professional contacts across them, including 2,926 with verified work emails. Istanbul is the largest hub.
This list covers systems integration 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 14, 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 systems integration companies based in Türkiye
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,464 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 2 | 426 contacts → | ||||
Partial evidence “Mikrolink is a global systems integrator offering integrated solutions in telecommunications, data center technologies, and information & communication technologies (ICT).” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 3 | 416 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 4 | 400 contacts → | ||||
Indirect evidence “1998 yılında kurulan Teknoser, günümüzde bilgi ve iletişim teknolojileri pazarının önde gelen sistem entegrasyon ve saha hizmetleri firmasıdır.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 5 | 273 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 6 | 271 contacts → | ||||
Indirect evidence “1992 yılında, üniversite döneminden birbirlerini tanıyan 5 kurucu ortak tarafından kurulan Bilgi Birikim Sistemleri; bugün ülkemizin en önemli Bilgi Teknolojileri sistem…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 7 | 196 contacts → | ||||
Indirect evidence “NGN, one of the leading companies in the IT sector in Turkey, has been providing end-to-end professional solutions to meet all needs of the companies in the field of informatics…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 8 | 191 contacts → | ||||
Indirect evidence “Established in 1995 in Izmir, Dedem Mekatronik has evolved into a prominent player in the field of ‘turnkey design, production, and installation of a smart factory.’ Operating…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 9 | 169 contacts → | ||||
Partial evidence “About Us Being a solution provider and system integrator since 1992, Data Market which is one of the leading companies in information industry in Turkey is the information…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 10 | 151 contacts → | ||||
Partial evidence “EEC Integrated Building Control Systems is an engineering company that specializes in the automation of electrical, electronic and mechanical systems that make buildings safe and…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 11 | 137 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 12 | 130 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 13 | 129 contacts → | ||||
Partial evidence “Sekom, over 20 years of experience as a system integrator in the field of IT technologies is a market leader in networking, unified communications, service provider video systems…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 14 | 121 contacts → | ||||
Partial evidence “Our company is mainly a system integrator specialized in the fields of electronics, RF communications and security technologies.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 15 | 117 contacts → | ||||
Indirect evidence “Locksmith Software Technologies commenced its operations with the aim of producing most suitable and highest quality information technology solutions for its customers.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 16 | 101 contacts → | ||||
Indirect evidence “MCSistem elektromekanik sistem entegrasyonu yapan bir kuruluştur.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 17 | 90 contacts → | ||||
Indirect evidence “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.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 18 | 84 contacts → | ||||
Partial evidence “IST Systems, İstanbul Yeni Havalimanı için ICT altyapı, havacılık sistemleri tasarımı ve uygulanması amacıyla 2018 yılında kuruldu.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 19 | 84 contacts → | ||||
Indirect evidence “Türkiye’de bilişim sektörünün önde gelen firmalarından 4S Bilgi Teknolojileri 1996 yılında Ankara’da kurulmuştur.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 20 | 82 contacts → | ||||
Indirect evidence “Sistem Entegrasyon | Yazılım Geliştirme | Veri Merkezi Çözümleri | IT Güvenlik Çözümleri | Danışmanlık Servisleri” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 21 | 74 contacts → | ||||
Indirect evidence “Since 1998, Ateksis has been providing technologies that combine innovation, quality and reliability.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 22 | 73 contacts → | ||||
Indirect evidence “Since our founding in 1997, we have worked to provide value to our customers by offering customized services with a focus on technology.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 23 | 72 contacts → | ||||
Indirect evidence “Çatı Teknoloji, Türkiye genelinde 34 ildeki yaygın saha organizasyonu ile kurumsal müşterilere yönelik Network, Data Center ve kritik altyapı projelerini uçtan uca yöneten güçlü…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 24 | 63 contacts → | ||||
Indirect evidence “Oskon müşterilerine otomasyon alanında kaliteli ve profesyonel çözümler sunmak amacı ile 2001 yılında kuruldu.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 25 | 62 contacts → | ||||
Indirect evidence “Bilgi Sistemleri, 2002 yılında bilişim sektöründe "Sistem Entegratörü" olarak faaliyete geçmiştir.” Source: RevenueBase Database · checked Sep 14, 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: systems integration 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 systems integration companies.
- Partial evidence
- Its own public description names part of systems integration companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name systems integration 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 714 systems integration companies based in Türkiye
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Systems integration companies based in Türkiye at a glance
As of Sep 14, 2026Companies by employee count
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 714 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 systems integration 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 “systems integration 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 systems integration 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 systems integration 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, 2,926 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 14, 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.
Systems integration companies by metro
- Systems integration companies in Istanbul245
- Systems integration companies in Ankara69
- Systems integration companies in Atasehir25
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 systems integration 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 systems integration companies are there based in Türkiye?
RevenueBase identified 714 systems integration 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?
Koçsistem, headquartered in Unalan Mah. Uskudar Istanbul Turkiye, tops this list with the largest team on record.
Which city has the most systems integration companies?
Istanbul leads with 245 headquartered companies, followed by Ankara (69) and Atasehir (25).
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 2,926 verified decision-maker contacts tracked across these 714 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 14, 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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