Company lists · Data refreshed September 2026
Top 25 Building systems integrators based in Türkiye
RevenueBase identified 421 building systems integrators headquartered in Türkiye as of September 2026 and tracks 4,441 professional contacts across them, including 989 with verified work emails. Istanbul is the largest hub.
This list covers building systems integrators 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 27, 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 building systems integrators based in Türkiye
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 151 contacts → | ||||
Strong 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 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 129 contacts → | ||||
Strong 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 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 74 contacts → | ||||
Indirect evidence “Since 1998, Ateksis has been providing technologies that combine innovation, quality and reliability.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 63 contacts → | ||||
Indirect evidence “Oskon müşterilerine otomasyon alanında kaliteli ve profesyonel çözümler sunmak amacı ile 2001 yılında kuruldu.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 59 contacts → | ||||
Indirect evidence “ARI OTOMASYON VE YANGIN GÜVENLİK SİSTEMLERİ; 1997 yılından bu yana mühendislik ve hizmet firması olarak, yangın ve otomasyon konularında faaliyet göstermektedir.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 53 contacts → | ||||
Indirect evidence “TARA Robotik Otomasyon Japon FANUC ve NACHI firmaları ile İsveçli SVIA firmasının Türkiye temsilciliğini yapmaktadır.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 44 contacts → | ||||
Partial evidence “We consolidate every detail of your building management and automation projects under a single roof.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 40 contacts → | ||||
Indirect evidence “Bilgi ve iletişim teknolojileri alanında uçtan uca katma değerli çözümler sunmak amacıyla 1995 yılında kurulan İSNET, bu alanda yetişmiş sertifikalı uzman kadrosuyla sektörde…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 39 contacts → | ||||
Partial evidence “Ges Teknik commenced its activity as air conditions systems provider in 2003.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 37 contacts → | ||||
Strong evidence “e-Çözüm Bilişim is a system integrator company operating in the IT sector since and has been providing exclusive services over the years to Turkey’s leading companies by making a…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 36 contacts → | ||||
Indirect evidence “LN was established in 1993 in Ankara/Turkey to operate in the field of Information Technologies (IT).” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 32 contacts → | ||||
Indirect evidence “Established in 1995, Delta Proses sustains being a frontier player and solution partner of Turkish and Global Industry by continuously increasing its work potential.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 29 contacts → | ||||
Indirect evidence “Matriks, yangın alarm, anons ve müzik yayın, cctv, geçiş kontrol ve bina otomasyon sistemleri konusunda 18 yıllık bilgi birikimi ve tecrübeye sahip kadrosu ve ileri teknoloji…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 28 contacts → | ||||
Indirect evidence “Merit İletişim Teknolojileri Tic ve San.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 27 contacts → | ||||
Indirect evidence “Coretek Bilgi Teknolojileri, müşterilerine yüksek teknoloji bileşenlerini kullanarak, konularında uzman kadrosu ile sektörde bilişim alanında ilerlemeyi hedefleyen kurumların…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 27 contacts → | ||||
Indirect evidence “1993'ten bugüne.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 27 contacts → | ||||
Indirect evidence “Fides Teknoloji ve Güvenlik Sistemleri, Otomasyon, Elektronik Güvenlik ve Teknolojik Sistemler konularında faaliyet göstermeyi amaç edinerek 1994 yılında kurulmuştur.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 24 contacts → | ||||
Strong evidence “NEX TECHNOLOGY is leader system integrator in IT Infrastructure and related services for private and public sector organizations.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 24 contacts → | ||||
Indirect evidence “Ontrol, headquartered in Turkey, boasts a global presence and has been a trusted leader in designing and manufacturing automation and control products for HVAC applications for…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 23 contacts → | ||||
Indirect evidence “2017’de “Endüstriyel Bilgisayarın Merkezi” vizyonuyla kurulan ICC Dijital Endüstriyel Teknolojiler, İstanbul, Ankara ve Bursa ofislerinin yanı sıra Belçika Antwerp ve Bulgaristan…” Source: RevenueBase Database · checked Sep 27, 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: building systems integrators. 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 building systems integrators.
- Partial evidence
- Its own public description names part of building systems integrators, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name building systems integrators. 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 421 building systems integrators based in Türkiye
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Building systems integrators based in Türkiye at a glance
As of Sep 27, 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 421 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 building systems integrators, 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 “building systems integrators”. 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 building systems integrators), 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 building systems integrators, 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, 989 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 27, 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.
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 building systems integrators, 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 building systems integrators are there based in Türkiye?
RevenueBase identified 421 building systems integrators 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?
Teknoser, headquartered in Istanbul, tops this list with the largest team on record.
Which city has the most building systems integrators?
Istanbul leads with 133 headquartered companies, followed by Ankara (47) and Izmir (14).
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 989 verified decision-maker contacts tracked across these 421 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 27, 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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