Company lists · Data refreshed September 2026
Top 25 Enterprise systems integration firms based in Türkiye
RevenueBase identified 620 enterprise systems integration firms headquartered in Türkiye as of September 2026 and tracks 10,700 professional contacts across them, including 2,928 with verified work emails. Istanbul is the largest hub.
This list covers enterprise systems integration firms 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.
The 25 largest enterprise systems integration firms 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 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 533 contacts → | ||||
Indirect evidence “Uyumsoft olarak, Türkiye'nin lider yazılım firmaları arasında yer alıyor ve faaliyet gerçekleştiriyoruz.” Source: RevenueBase Database · checked Sep 28, 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 28, 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 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 399 contacts → | ||||
Indirect evidence “ERP projelerinin işletmelerde başarısı için yazılımın kaliteli olması tek başına yeterli bir unsur değildir.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 309 contacts → | ||||
Indirect evidence “VBT is a technology company which established by a dedicate group of experts and gives support in international area.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 273 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 28, 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 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 125 contacts → | ||||
Partial evidence “Founded in 1994, BIS is a leading technology and service provider delivering packaged application solutions as well as custom software development, frameworks, integration…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 114 contacts → | ||||
Indirect evidence “By constant thriving, we follow up the road which we departed at 2007 with purpose to supply IT Services.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 102 contacts → | ||||
Indirect evidence “1975 yılında Sabancı Holding bünyesinde kurulan BİMSA, 40 yıllık deneyimi ile Türkiye’nin önde gelen bilgi teknolojisi şirketlerindendir.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 94 contacts → | ||||
Indirect evidence “Partnera is an IT consulting company with a wide range of know-how covering business processes across different industries.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 84 contacts → | ||||
Indirect evidence “Türkiye’de bilişim sektörünün önde gelen firmalarından 4S Bilgi Teknolojileri 1996 yılında Ankara’da kurulmuştur.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 82 contacts → | ||||
Indirect evidence “Sistem Entegrasyon | Yazılım Geliştirme | Veri Merkezi Çözümleri | IT Güvenlik Çözümleri | Danışmanlık Servisleri” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 79 contacts → | ||||
Indirect evidence “KG Teknoloji’s know-how and experience dates back to the year of 2003.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 74 contacts → | ||||
Indirect evidence “Smartiks was established in 2006 to provide effective business solutions, software development and consultancy with its expert staff by using the highest technology.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 73 contacts → | ||||
Indirect evidence “Logosoft olarak, yazılım teknolojileri alanındaki 30 yılı aşkın deneyimimizle işletmelerin dijital dönüşüm yolculuğunda güçlü bir çözüm ortağıyız.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 69 contacts → | ||||
Indirect evidence “DMR Information Technology is a team of professionals with the experience and know-how to handle the most challenging business software problems.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 69 contacts → | ||||
Indirect evidence “1984 yılında yüzde 100 Türk sermayeli olarak kurulan şirketimiz, işletmelerin satış, pazarlama, satın alma, stok yönetimi, depo mağaza yönetimi, cari hesap, finans, üretim, bütçe…” Source: RevenueBase Database · checked Sep 28, 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 28, 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: enterprise systems integration firms. 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 enterprise systems integration firms.
- Partial evidence
- Its own public description names part of enterprise systems integration firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name enterprise systems integration firms. 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 620 enterprise systems integration firms based in Türkiye
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,928 reachable decision-makers.
Free signup · no credit card
Enterprise systems integration firms based in Türkiye at a glance
As of Sep 28, 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 620 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 enterprise systems integration firms, 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 “enterprise systems integration firms”. 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 enterprise systems integration firms), 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 enterprise systems integration firms, 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, 2,928 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.
Enterprise systems integration firms by metro
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 enterprise systems integration firms, 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 enterprise systems integration firms are there based in Türkiye?
RevenueBase identified 620 enterprise systems integration firms 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 enterprise systems integration firms?
Istanbul leads with 221 headquartered companies, followed by Ankara (44) and Kadikoy (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 2,928 verified decision-maker contacts tracked across these 620 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.
Ready to reach these companies? Verified emails and direct dials for all 620 enterprise systems integration firms based in Türkiye. Start with a free account, no credit card.
Download this list →Related lists
Enterprise systems integration firms by geography
- Enterprise systems integration firms based in Buenos Aires, Argentina
- Enterprise systems integration firms based in Melbourne, Australia
- Enterprise systems integration firms based in Sydney, Australia
- Enterprise systems integration firms based in Dhaka, Bangladesh
- Enterprise systems integration firms based in Barueri, Brazil
- Enterprise systems integration firms based in Belo Horizonte, Brazil
- Enterprise systems integration firms based in Campinas, Brazil
- Enterprise systems integration firms based in Curitiba, Brazil
- Enterprise systems integration firms based in Porto Alegre, Brazil
- Enterprise systems integration firms based in Rio De Janeiro, Brazil
- Enterprise systems integration firms based in Sao Paulo, Brazil
- Enterprise systems integration firms based in Sofia, Bulgaria
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Enterprise systems integration firms based in Buenos Aires, Argentina
- Enterprise systems integration firms based in Melbourne, Australia
- Enterprise systems integration firms based in Sydney, Australia
- Enterprise systems integration firms based in Dhaka, Bangladesh
- Enterprise systems integration firms based in Barueri, Brazil
- Enterprise systems integration firms based in Belo Horizonte, Brazil