Company lists · Data refreshed September 2026

Top 25 Secure software development consulting firms based in Türkiye

RevenueBase identified 151 secure software development consulting firms headquartered in Türkiye as of September 2026 and tracks 809 professional contacts across them, including 147 with verified work emails. Istanbul is the largest hub.

This list covers secure software development consulting 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 29, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review
151Companies
809Contacts tracked
147Verified emails
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The 25 largest secure software development consulting firms based in Türkiye

Ranked by team size
Top 25 of 151 secure software development consulting firms based in Türkiye, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to secure software development consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceIstanbul, TürkiyeHQ checked Sep 29, 202611-5069 contacts →

Indirect evidence

“2017 yılında bilgi güvenliği konusunda danışmanlık, servis ve destek hizmetleri vermek amacıyla kurulan Infinitum IT, siber olaylara müdahale hizmetleri, güvenli kod…”

Source: RevenueBase Database · checked Sep 29, 2026
2Indirect evidenceÇankaya, TürkiyeHQ checked Sep 29, 202611-5045 contacts →

Indirect evidence

“BTG (Bilgi ve Teknoloji Grubu), yazılım geliştirme süreçleri ve test aşamalarında Türkiye çapında çeşitli büyük kurumsal projelerde danışmanlık, eğitim ve destek hizmetleri veren…”

Source: RevenueBase Database · checked Sep 29, 2026
3Strong evidenceİstanbul, TürkiyeHQ checked Sep 29, 202611-5029 contacts →

Strong evidence

“Mavidev is founded in 2019 to share our expertise in software development with our potential clients.”

Source: RevenueBase Database · checked Sep 29, 2026
4Partial evidenceAntalya, TürkiyeHQ checked Sep 29, 202611-5025 contacts →

Partial evidence

“IT Services and Consulting”

Source: RevenueBase Database · checked Sep 29, 2026
5Partial evidenceIstanbul, TürkiyeHQ checked Sep 29, 202611-5022 contacts →

Partial evidence

“We are consultants with technical expertise in IT Architecture, Open Source Technology, Agile Development, Test Automation, DevOps and Java Platform.”

Source: RevenueBase Database · checked Sep 29, 2026
6Partial evidenceİstanbul, TürkiyeHQ checked Sep 29, 202611-5021 contacts →

Partial evidence

“EMA Security, uluslararası geçerliliğe sahip sertifikalı uzman ekibiyle, Türkiye'de siber güvenlik ve bilgi güvenliği alanlarında faaliyet gösteren yenilikçi bir danışmanlık…”

Source: RevenueBase Database · checked Sep 29, 2026
7Indirect evidenceAnkara, TürkiyeHQ checked Sep 29, 20261-1019 contacts →

Indirect evidence

“Bilişim danışmanlığı, outsourcing, yazılım danışmanlığı konusunda uzman ekibimizle hizmetinizdeyiz”

Source: RevenueBase Database · checked Sep 29, 2026
8Indirect evidenceAnkara, TürkiyeHQ checked Sep 29, 202611-5017 contacts →

Indirect evidence

“PROYA was founded in 2002 in Ankara, Turkey, with a subsidiary in Istanbul.”

Source: RevenueBase Database · checked Sep 29, 2026
9Strong evidencePoligon Caddesi Buyaka 3. Blok Ümraniye, TürkiyeHQ checked Sep 29, 202611-5016 contacts →

Strong evidence

“GTI is an Information Security Consulting, Solutions & Training services firm, providing specialized security services.”

Source: RevenueBase Database · checked Sep 29, 2026
10Indirect evidenceIstanbul, TürkiyeHQ checked Sep 29, 202611-5016 contacts →

Indirect evidence

“Sword-IT was found in 2006 in Toronto.”

Source: RevenueBase Database · checked Sep 29, 2026
11Partial evidenceBornova, TürkiyeHQ checked Sep 29, 20261-1015 contacts →

Partial evidence

“Elmali Tech leads in offering tailored software solutions that create innovation and expansion.”

Source: RevenueBase Database · checked Sep 29, 2026
12Indirect evidenceKocaeli, TürkiyeHQ checked Sep 29, 202611-5013 contacts →

Indirect evidence

“With an experienced team of certified consultants leading and delivering programs through the complete project life cycle, CloudMetrik’s expertise is focused on the design of…”

Source: RevenueBase Database · checked Sep 29, 2026
13Partial evidenceIstanbul, TürkiyeHQ checked Sep 29, 202611-5012 contacts →

Partial evidence

“Internal & External Penetration Tests Web & Mobil Application Security Tests CyberSecurity Consultancy Incident Response, Vulnerability Analysis, Threat Hunting”

Source: RevenueBase Database · checked Sep 29, 2026
14Indirect evidenceİzmi̇r, TürkiyeHQ checked Sep 29, 20261-1011 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026
15Indirect evidenceŞişli, TürkiyeHQ checked Sep 29, 20261-1010 contacts →

Indirect evidence

“Digital Forensics and Incident Response”

Source: RevenueBase Database · checked Sep 29, 2026
16Indirect evidenceGebze, TürkiyeHQ checked Sep 29, 202611-5010 contacts →

Indirect evidence

“Taby Yazılım ve Danışmanlık Limited Şirketi”

Source: RevenueBase Database · checked Sep 29, 2026
17Indirect evidenceAnkara, TürkiyeHQ checked Sep 29, 20261-1010 contacts →

Indirect evidence

“Sibereum Bilgi Güvenliği ve Danışmanlığı Tic.”

Source: RevenueBase Database · checked Sep 29, 2026
18Indirect evidencePendik, TürkiyeHQ checked Sep 29, 202611-508 contacts →

Indirect evidence

“Kaynak kod analizi ve sızma testi servisleri sağlayan TSE-B sınıfı siber güvenlik şirketidir.”

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidenceİstanbul (istanbul, TürkiyeHQ checked Sep 29, 202611-507 contacts →

Indirect evidence

“Siber güvenlik alanında Denetim, Danışmanlık ve Uygulama, Eğitim, Adli Bilişim konularında hizmet vermektedir.”

Source: RevenueBase Database · checked Sep 29, 2026
20Indirect evidenceIstanbul, TürkiyeHQ checked Sep 29, 20261-105 contacts →

Indirect evidence

“Yazılım sektöründeki 20 yıllık deneyimiyle 2024 yılında kurulan Axes Yazılım Danışmanlık, işletmelerin süreçlerini kolaylaştırmak ve optimize etmek için etkin çözümler sunmayı…”

Source: RevenueBase Database · checked Sep 29, 2026
21Partial evidenceAtasehir, TürkiyeHQ checked Sep 29, 202611-505 contacts →

Partial evidence

“Endpoint-labs is an award-winning pioneer in the next generation of application security solutions, rapidly becoming a widely recognized conspicuous in application security…”

Source: RevenueBase Database · checked Sep 29, 2026
22Indirect evidenceÜmi̇tköy, TürkiyeHQ checked Sep 29, 20261-105 contacts →

Indirect evidence

“YATEM, yüksek kalitedeki sistem ve yazılım mühendisleri ile müşteri odaklı, maliyet etkin ve kaliteli yazılım hizmetleri üretmektedir.”

Source: RevenueBase Database · checked Sep 29, 2026
23Indirect evidenceÇankaya, TürkiyeHQ checked Sep 29, 202611-504 contacts →

Indirect evidence

“Bilintek was established in 2003 at Bilkent University campus area in cooperation with Bilkent Holding and Bilkent University.”

Source: RevenueBase Database · checked Sep 29, 2026
24Strong evidenceAnkara, TürkiyeHQ checked Sep 29, 20261-104 contacts →

Strong evidence

“Software Development Services Partner with 15-year industry veterans who turn complex ideas into production-ready code-on time, every time.”

Source: RevenueBase Database · checked Sep 29, 2026
25Indirect evidenceİstanbul, TürkiyeHQ checked Sep 29, 202611-504 contacts →

Indirect evidence

“Uygulama Geliştirme / Danışmanlık Biz, onlarca yıldır Türkiye'nin üst düzey firmalarında yazılım yapmış ve yazılım yönetmiş birkaç arkadaşız.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 25 of 151 secure software development consulting firms based in Türkiye

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Secure software development consulting firms based in Türkiye at a glance

As of Sep 29, 2026
18.2%Verified-email coverage
5.4Average contacts per company
1-10Median size (employees)
40.4%Largest-city concentration · Istanbul
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
99
11-50
45
51-200
7

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 151 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 secure software development consulting 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 “secure software development consulting 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 secure software development consulting 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 secure software development consulting 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, 147 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 29, 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.

Secure software development consulting 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 secure software development consulting 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 secure software development consulting firms are there based in Türkiye?

RevenueBase identified 151 secure software development consulting 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?

Infinitumit, headquartered in Istanbul, tops this list with the largest team on record.

Which city has the most secure software development consulting firms?

Istanbul leads with 61 headquartered companies, followed by Ankara (14) and Cankaya (10).

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 147 verified decision-maker contacts tracked across these 151 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 29, 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.