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Top 50 IT services companies in Turkey

Tamtam tracks 99 IT services companies headquartered in Turkey. This list ranks the 50 largest by number of employees on LinkedIn, led by Turkcell Global Bilgi, HAVELSAN and Garanti BBVA Teknoloji. Their median headcount is 628. Half of them were founded in 2004 or later. The most common headquarters are Istanbul (24) and Ankara (3).

🇹🇷 Turkey50 companiesUpdated Nov 11, 2026

This selection of IT services companies in Turkey includes large firms with thousands of employees. Turkcell Global Bilgi provides customer experience solutions, while HAVELSAN specializes in defense and information technology software. Garanti BBVA Teknoloji offers IT infrastructure and software development for financial organizations, and Turkish Technology focuses on aviation industry solutions. NTT DATA Business Solutions Turkey provides digital transformation services, and Innova is a Turkish IT solutions provider.

The companies on this list are predominantly focused on IT services and consulting, with a significant number catering to the financial and banking sectors. Several firms also specialize in telecommunications, defense, and aviation.

#CompanyIndustryHeadquarters EmployeesFounded
1
Turkcell Global Bilgiglobalbilgi.com.tr

A leading provider of customer experience solutions across various sectors with expertise in customer service, sales, technical support, and data management

Telecommunications 🇹🇷 Beyoglu 7,535 1999
2
HAVELSANhavelsan.com

Defense and information technology software integrator specializing in command systems, war management, simulation, autonomous platforms, cyber security, homeland security and e-government technologies.

Defense and Space Manufacturing 🇹🇷 Çankaya 3,634 1982
3
Garanti BBVA Teknolojigarantibbvateknoloji.com.tr

Provides technology infrastructure, software development, system management, security, and project management services for financial organizations with real-time operations.

IT Services and IT Consulting 🇹🇷 Pendik 3,451 n/a
4
Turkish Technologyturkishtechnology.com

An innovative and agile technology organization in the aviation industry, focused on driving customer experience through cutting-edge solutions and services

IT Services and IT Consulting 🇹🇷 Üsküdar 2,586 2021
5
Softtechsofttech.com.tr

A technology innovator with a focus on creating products that enhance quality of life, fostering in-house entrepreneurship, and supporting startups

IT Services and IT Consulting 🇹🇷 Istanbul 2,375 2006
6
NTT DATA Business Solutions Turkeynttdata-solutions.com

NTT DATA Business Solutions provides technology services worldwide, specializing in digital transformation, innovation, and developing solutions in collaboration with industry leaders

IT Services and IT Consulting 🇹🇷 Ataşehir 2,227 n/a
7
Innovainnova.com.tr

Leading Turkish IT solutions provider with 1400 professionals offering platform-independent solutions in various sectors, exporting solutions to 33 countries across 3 continents

IT Services and IT Consulting 🇹🇷 Istanbul 2,115 1999
8
Architechtarchitecht.com

Specializing in financial technologies, our subsidiary of a leading participation bank offers innovative solutions for banking, security, and software development globally

IT Services and IT Consulting 🇹🇷 Teknopark İstanbul 2,012 2015
9
Intertech Information Technology and Marketing Inc.intertech.com.tr

Established in 1987, this tech company provides innovative IT solutions for finance and banking industries globally, offering a wide range of products and services

IT Services and IT Consulting 🇹🇷 Istanbul 1,895 1987
10
Ziraat Teknolojiziraatteknoloji.com

One of Turkey's leading IT companies providing banking solutions and IT services to public organizations and companies worldwide

IT Services and IT Consulting 🇹🇷 Esenler 1,809 2001
11
Türksat Uydu Haberleşme Kablo TV ve İşletme A.Ş.turksat.com.tr

A leading satellite operator offering services in satellite communications, cable broadcasting, and IT fields in Turkey and worldwide

Telecommunications 🇹🇷 Ankara 1,706 2004
12
Etiyaetiya.com

Etiya specializes in AI-driven digital transformation, offering innovative solutions for various sectors, enhancing customer experience with agile methodologies and microservices.

Software Development 🇹🇷 Istanbul 1,570 2004
13
KoçSistemkocsistem.com.tr

Leader in information technologies offering diverse services in IoT, analytics, cloud, security, and more, focusing on client needs and digital transformation

IT Services and IT Consulting 🇹🇷 Istanbul 1,554 1945
14
CCN Holdingccnholding.com

A construction company established through a partnership, known for prestigious projects in Azerbaijan and Turkey, including healthcare and tourism facilities Operations in Azerbaijan, Turkey, K Iraq, Libya

Holding Companies 🇹🇷 1,357 2007
15
IBTECH A.S.ibtech.com.tr

Development and continuous enhancement of modular core banking software, direct banking platforms, CRM, BI, and infrastructure management solutions for financial institutions.

IT Services and IT Consulting 🇹🇷 Gebze 1,313 2005
16
BGTSbilgeadam.com

An international technology consulting firm specializing in software development, IT consulting, business processes, QA & testing, big data, cloud, AI/ML, and cybersecurity services

IT Services and IT Consulting 🇹🇷 Istanbul 1,182 1997
17
NETAŞnetas.com.tr

Develops end-to-end IT infrastructure and telecom technologies including cloud computing, 5G equipment, cybersecurity, and smart mobile devices for diverse sectors.

Telecommunications 🇹🇷 Istanbul 1,008 1967
18
Tempo BPOtempobpo.com

A company specializing in customer and information technology services, offering integrated customer experience, technology operations, and end-to-end digital transformation services

Outsourcing and Offshoring Consulting 🇹🇷 Istanbul 1,006 2002
19
Deloitte Turkeydeloitte.com.tr

The company provides audit, consulting, financial advisory, risk management, tax services to public and private clients across various industries globally

Management Consulting 🇹🇷 Istanbul 978 n/a
20
OBSSobss.tech

Leader in technology consulting for a cloud-powered future, with expertise in banking, insurance, e-commerce, retail, and start-ups Strong team with offices in Europe

IT Services and IT Consulting 🇹🇷 Istanbul 870 2005
21
DIPdip.com

Specializing in Data & Analytics solutions, creating custom solutions for organizations, providing consulting services in data transformation, analysis, and management processes

IT Services and IT Consulting 🇹🇷 Istanbul 702 2012
22
BİTES - Defence & Aerospace Technologiesbites.com.tr

National high-tech defense industry and information technologies firm developing next-generation solutions for various industries with a focus on cutting-edge technologies and innovative products

Defense and Space Manufacturing 🇹🇷 Çankaya 683 2005
23
Doğuş Teknolojid-teknoloji.com.tr

A technology company providing customized solutions in various sectors, specializing in RPA, data analytics, AI, cybersecurity, and sustainable practices with a focus on innovation and talent development

IT Services and IT Consulting 🇹🇷 Maslak 667 2012
24
Reklam Ajansıfikirgen.com

Specializing in digital solutions, the agency provides innovative advertising services tailored to meet the unique needs of its clients

Advertising Services 🇹🇷 Levent 638 n/a
25
adesso Turkeyadesso.com.tr

A digital transformation company with agile beliefs, employing over 10,000 people worldwide, offering custom software development and IT solutions

IT Services and IT Consulting 🇹🇷 Istanbul 628 2013

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26
AselsanNET Ltd.aselsannet.com.tr

providing sales, survey, installation, system setup, and service activities for electronic and communication needs of civilian institutions and users

Telecommunications 🇹🇷 Ankara 614 2004
27
ATPatptech.com

A global IT solutions provider specializing in trading software, restaurant management, digital transformation, sustainable energy products, venture capital, and technology investments

Software Development 🇹🇷 Istanbul 580 1997
28
TÜBİTAK BİLGEMgov.tr

Advanced research center specializing in informatics and information security, dedicated to enhancing knowledge and innovation in the field

Defense and Space Manufacturing 🇹🇷 Kocaeli 554 n/a
29
Mikrolinkmikrolink.com.tr

A global telecom system integrator and supplier offering end-to-end Data Centre solutions, IT Digital Technologies, telecom projects, and fiber optic connectivity components

Telecommunications 🇹🇷 Istanbul 553 2000
30
Commenciscommencis.com

A company specializing in experience design, software engineering, and cloud technologies, enabling enterprises to build digital experiences and strengthen customer relationships globally

Software Development 🇹🇷 Istanbul 542 2000
31
BDH - Bilisim Destek Hizmetleribdh.com.tr

Leading system integrator in Turkey, offering consulting, managed services, and hardware support in information and communication technologies to all industries and organizations

IT Services and IT Consulting 🇹🇷 Istanbul 541 2006
32
Innovance Consultancyinnovance.com.tr

Innovance provides technology solutions and expertise to help clients capitalize on digitization opportunities, achieve profitability, and scale their businesses globally

IT Services and IT Consulting 🇹🇷 Maslak 538 2017
33
TEKNOSERteknoserbilisim.com

A leading systems integration and field services provider in the information and communication technology market with expertise in installation, maintenance, and support services

IT Services and IT Consulting 🇹🇷 Istanbul 530 1998
34
AKGÜNakgun.com.tr

A technology-focused organization offering solutions in healthcare, telecommunications, education, and defense sectors, with expertise in software development, system integration, and information security technologies

IT Services and IT Consulting 🇹🇷 Ankara 519 1986
35
Teknofixteknofix.com.tr

A tech support provider offering end-to-end services for seamless digital experiences, focusing on user security and innovation, with a mobile device repair academy for technicians

Telecommunications 🇹🇷 Istanbul 518 2011
36
GTechgtech.com.tr

A pioneering technology enterprise specializing in digital transformation for the financial sector, offering advanced software solutions, banking products, and data management services

IT Services and IT Consulting 🇹🇷 Istanbul 512 2000
37
Testiniumtestinium.com

Innovative team providing software consulting, test outsourcing, and training services with expertise in various testing approaches and frameworks

IT Services and IT Consulting 🇹🇷 Istanbul 492 2010
38
Kontrolmatik Technologieskontrolmatik.com

Provider of comprehensive solutions and services in LV/MV/HV, SCADA, automation, cybersecurity, and IoT for the energy, transportation, industrial, and mining sectors

Technology, Information and Internet 🇹🇷 Sariyer 492 2008
39
TAV Technologiestavtechnologies.aero

A trusted partner in airport technology, offering tailored solutions, round-the-clock support, and a proven international track record for seamless operations

IT Services and IT Consulting 🇹🇷 Istanbul 481 2005
40
İSBAKisbak.istanbul

Technology provider for İBB, enhancing the municipality's services and operations through innovative solutions and digital advancements

Technology, Information and Internet 🇹🇷 Istanbul 476 1986
41
Artı ve Artı Teknoloji Hizmetleriartivearti.com

A domestic technology services provider partnering with leading global tech companies, offering diverse solutions with a customer-focused approach and modern management practices

IT Services and IT Consulting 🇹🇷 Istanbul 463 1998
42
Detaysoftdetaysoft.com

Leader in SAP solutions, driving digital transformation through R&D, expert consultants, and global partnerships Trusted by 300+ clients with 1000+ successful projects worldwide

Software Development 🇹🇷 Istanbul 444 1999
43
DİAS Teknolojidiasteknoloji.com

The company provides innovative solutions in product tracking and management, focusing on product safety, public health, and tax revenue protection

IT System Custom Software Development 🇹🇷 Ataşehir 439 2021
44
SFS Software & Consultancy CO.sfs.com.tr

Specializing in providing software solutions and consulting services for the insurance industry, including a wide range of management systems for different insurance branches

Software Development 🇹🇷 Maslak 435 1992
45
Atmoswareatmosware.com.tr

An organization focused on developing high-quality software and training skilled developers to meet the increasing demand in the digitalization era

IT Services and IT Consulting 🇹🇷 Maltepe 435 2021
46
SabancıDxsabancidx.com

Specializing in cybersecurity, advanced data analytics, digital marketing technologies, cloud services, and digital transformation products to offer innovative solutions to customers

IT Services and IT Consulting 🇹🇷 Üsküdar 412 n/a
47
DefineXteamdefinex.com

A forward-thinking consulting house and venture builder focused on digital acceleration, innovation, and cultivating talent for the success of tomorrow

Business Consulting and Services 🇹🇷 Istanbul 405 2019
48
ETB Groupetb-group.com

A leading service provider offering omni-channel customer experience management services across Europe, specializing in customer care, technical support, and tailored solutions

Outsourcing and Offshoring Consulting 🇹🇷 Istanbul 393 2003
49
i2i Systemsi2i-systems.com

An innovative international IT specialist in telecommunications, offering 5G solutions and converged revenue management for CSPs with scalable, cloud-native, and modular systems

Telecommunications 🇹🇷 Esenler 393 2007
50
BTC Bilişim Hizmetleribtc-ag.com.tr

Specializing in IT-focused business consulting, we optimize processes, provide analysis, management support, and design personalized IT environments for clients' long-term development

IT Services and IT Consulting 🇹🇷 İçerenköy 383 1995

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.

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