The IT services companies in Istanbul listed here are mostly large firms, many founded in the late 1990s and early 2000s. They provide a range of services, from software development to IT consulting and telecommunications. Several companies specialize in digital transformation and AI-driven solutions.
Notable companies include Softtech, which focuses on products enhancing quality of life and supporting startups; Innova, a solutions provider exporting to 33 countries; Intertech Information Technology and Marketing Inc., offering IT solutions for finance and banking; and Etiya, specializing in AI-driven digital transformation. The list also features KoçSistem, a leader in various IT services, and NETAŞ, which develops end-to-end IT infrastructure and telecom technologies.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Softtechsofttech.com.tr
A technology innovator with a focus on creating products that enhance quality of life, fostering in-house entrepreneurship, and supporting startups |
2,375 | |||
| 2 |
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 |
2,115 | |||
| 3 |
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 |
1,895 | |||
| 4 | 1,570 | ||||
| 5 |
KoçSistemkocsistem.com.tr
Leader in information technologies offering diverse services in IoT, analytics, cloud, security, and more, focusing on client needs and digital transformation |
1,554 | |||
| 6 |
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 |
1,182 | |||
| 7 |
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. |
1,008 | |||
| 8 |
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 |
1,006 | |||
| 9 | 870 | ||||
| 10 | 702 | ||||
| 11 |
adesso Turkeyadesso.com.tr
A digital transformation company with agile beliefs, employing over 10,000 people worldwide, offering custom software development and IT solutions |
628 | |||
| 12 |
ATPatptech.com
A global IT solutions provider specializing in trading software, restaurant management, digital transformation, sustainable energy products, venture capital, and technology investments |
580 | |||
| 13 |
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 |
553 | |||
| 14 |
Commenciscommencis.com
A company specializing in experience design, software engineering, and cloud technologies, enabling enterprises to build digital experiences and strengthen customer relationships globally |
542 | |||
| 15 |
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 |
541 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
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 |
530 | |||
| 17 |
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 |
518 | |||
| 18 |
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 |
512 | |||
| 19 |
Testiniumtestinium.com
Innovative team providing software consulting, test outsourcing, and training services with expertise in various testing approaches and frameworks |
492 | |||
| 20 |
İSBAKisbak.istanbul
Technology provider for İBB, enhancing the municipality's services and operations through innovative solutions and digital advancements |
476 | |||
| 21 |
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 |
463 | |||
| 22 |
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 |
444 | |||
| 23 |
DefineXteamdefinex.com
A forward-thinking consulting house and venture builder focused on digital acceleration, innovation, and cultivating talent for the success of tomorrow |
405 | |||
| 24 |
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 |
393 | |||
| 25 |
Nagarro + MBISnagarro.com.tr
Leading digital engineering and consulting firm offering innovative solutions for digital transformation, specializing in SAP services for global markets |
369 | |||
| 26 |
CPM YAZILIMcpm.com.tr
Specializing in ERP software solutions, we provide consultancy services to ensure the success of projects, managing them with experienced teams since 1989 |
367 | |||
| 27 |
İşNetisnet.net.tr
Aiming to be a leader in digital transformation, the business offers services such as robotic process automation, IoT, cyber security, and artificial intelligence |
347 | |||
| 28 |
NGNngn.com.tr
Provider of end-to-end IT solutions in Turkey, specializing in system integration, data center services, cloud, managed services, outsourcing, and digital innovation |
318 | |||
| 29 |
Solvia Digital Solutionssolviads.com
Design, integrate, and optimize SAP and IT solutions to enhance agility, resilience, and long-term digital transformation for businesses. |
318 | |||
| 30 |
Şanstechsans-technology.com
Innovatively shaping various sectors with advanced technology, focusing on unleashing the creative potential of their team and empowering youth opportunities |
244 | |||
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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.
More company lists in Istanbul
- The largest companies in Istanbul 1,393
- Multinational companies in Istanbul 348
- Manufacturers in Istanbul 249
- Retail chains in Istanbul 188
- Companies with in-house R&D in Istanbul 177
- Companies with a mobile app in Istanbul 163
- Corporate groups and holding companies in Istanbul 134
- Critical infrastructure operators in Istanbul 133
- E-commerce companies in Istanbul 93
- Education providers in Istanbul 93
- Financial services firms in Istanbul 81
- Hotel and hospitality groups in Istanbul 73
- Retail companies in Istanbul 71
- IT Services and IT Consulting companies in Istanbul 69
- Consumer goods companies in Istanbul 68
- Hardware manufacturers in Istanbul 66
- Energy companies in Istanbul 64
- Publicly traded companies in Istanbul 62
- Food and beverage companies in Istanbul 61
- Construction companies in Istanbul 59
- Food and Beverage Services companies in Istanbul 54
- Logistics companies in Istanbul 53
- Financial Services companies in Istanbul 47
- Hospitals and Health Care companies in Istanbul 46