# The 30 largest IT services companies in Istanbul Tamtam tracks 50 IT services companies headquartered in Istanbul. This list ranks the 30 largest by number of employees on LinkedIn, led by Softtech, Innova and Intertech Information Technology and Marketing Inc.. Their median headcount is 541. Half of them were founded in 2000 or later. 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. 🇹🇷 Istanbul · 30 companies · Updated Nov 11, 2026 | # | Company | Industry | Headquarters | Employees | Founded | |---|---|---|---|---|---| | 1 | [Softtech](https://www.tamtam.ai/c/softtech) (softtech.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 | | 2 | [Innova](https://www.tamtam.ai/c/innova-istanbul) (innova.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 | | 3 | [Intertech Information Technology and Marketing Inc.](https://www.tamtam.ai/c/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 | | 4 | [Etiya](https://www.tamtam.ai/c/etiya) (etiya.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 | | 5 | [KoçSistem](https://www.tamtam.ai/c/kocsistem) (kocsistem.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 | | 6 | [BGTS](https://www.tamtam.ai/c/bgts) (bilgeadam.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 | | 7 | [NETAŞ](https://www.tamtam.ai/c/netas) (netas.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 | | 8 | [Tempo BPO](https://www.tamtam.ai/c/tempo-bpo) (tempobpo.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 | | 9 | [OBSS](https://www.tamtam.ai/c/obss) (obss.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 | | 10 | [DIP](https://www.tamtam.ai/c/dip) (dip.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 | | 11 | [adesso Turkey](https://www.tamtam.ai/c/adesso-turkey) (adesso.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 | | 12 | [ATP](https://www.tamtam.ai/c/atp) (atptech.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 | | 13 | [Mikrolink](https://www.tamtam.ai/c/mikrolink) (mikrolink.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 | | 14 | [Commencis](https://www.tamtam.ai/c/commencis) (commencis.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 | | 15 | [BDH - Bilisim Destek Hizmetleri](https://www.tamtam.ai/c/bdh-bilisim-destek-hizmetleri) (bdh.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 | | 16 | [TEKNOSER](https://www.tamtam.ai/c/teknoser) (teknoserbilisim.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 | | 17 | [Teknofix](https://www.tamtam.ai/c/teknofix) (teknofix.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 | | 18 | [GTech](https://www.tamtam.ai/c/gtech-istanbul) (gtech.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 | | 19 | [Testinium](https://www.tamtam.ai/c/testinium) (testinium.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 | | 20 | [İSBAK](https://www.tamtam.ai/c/isbak) (isbak.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 | | 21 | [Artı ve Artı Teknoloji Hizmetleri](https://www.tamtam.ai/c/art-ve-art-teknoloji-hizmetleri) (artivearti.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 | | 22 | [Detaysoft](https://www.tamtam.ai/c/detaysoft) (detaysoft.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 | | 23 | [DefineX](https://www.tamtam.ai/c/definex) (teamdefinex.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 | | 24 | [ETB Group](https://www.tamtam.ai/c/etb-group) (etb-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 | | 25 | [Nagarro + MBIS](https://www.tamtam.ai/c/nagarro-mbis) (nagarro.com.tr)
Leading digital engineering and consulting firm offering innovative solutions for digital transformation, specializing in SAP services for global markets | IT Services and IT Consulting | 🇹🇷 Istanbul | 369 | 2000 | | 26 | [CPM YAZILIM](https://www.tamtam.ai/c/cpm-yazilim) (cpm.com.tr)
Specializing in ERP software solutions, we provide consultancy services to ensure the success of projects, managing them with experienced teams since 1989 | Software Development | 🇹🇷 Istanbul | 367 | 1996 | | 27 | [İşNet](https://www.tamtam.ai/c/isnet) (isnet.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 | IT Services and IT Consulting | 🇹🇷 Istanbul | 347 | 1999 | | 28 | [NGN](https://www.tamtam.ai/c/ngn) (ngn.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 | IT Services and IT Consulting | 🇹🇷 Istanbul | 318 | 2005 | | 29 | [Solvia Digital Solutions](https://www.tamtam.ai/c/solvia-digital-solutions) (solviads.com)
Design, integrate, and optimize SAP and IT solutions to enhance agility, resilience, and long-term digital transformation for businesses. | IT Services and IT Consulting | 🇹🇷 Istanbul | 318 | 2014 | | 30 | [Şanstech](https://www.tamtam.ai/c/sanstech) (sans-technology.com)
Innovatively shaping various sectors with advanced technology, focusing on unleashing the creative potential of their team and empowering youth opportunities | IT Services and IT Consulting | 🇹🇷 Istanbul | 244 | 2019 | ## 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](https://www.tamtam.ai/l/largest-companies-istanbul) (1,393) - [Multinational companies in Istanbul](https://www.tamtam.ai/l/multinational-companies-istanbul) (348) - [Manufacturers in Istanbul](https://www.tamtam.ai/l/manufacturers-istanbul) (249) - [Retail chains in Istanbul](https://www.tamtam.ai/l/retail-chains-istanbul) (188) - [Companies with in-house R&D in Istanbul](https://www.tamtam.ai/l/r-and-d-companies-istanbul) (177) - [Companies with a mobile app in Istanbul](https://www.tamtam.ai/l/companies-with-mobile-app-istanbul) (163) - [Corporate groups and holding companies in Istanbul](https://www.tamtam.ai/l/holding-companies-istanbul) (134) - [Critical infrastructure operators in Istanbul](https://www.tamtam.ai/l/critical-infrastructure-operators-istanbul) (133) - [E-commerce companies in Istanbul](https://www.tamtam.ai/l/ecommerce-companies-istanbul) (93) - [Education providers in Istanbul](https://www.tamtam.ai/l/education-companies-istanbul) (93) - [Financial services firms in Istanbul](https://www.tamtam.ai/l/financial-services-firms-istanbul) (81) - [Hotel and hospitality groups in Istanbul](https://www.tamtam.ai/l/hospitality-groups-istanbul) (73) - [Retail companies in Istanbul](https://www.tamtam.ai/l/retail-companies-istanbul) (71) - [IT Services and IT Consulting companies in Istanbul](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-istanbul) (69) - [Consumer goods companies in Istanbul](https://www.tamtam.ai/l/consumer-goods-companies-istanbul) (68) - [Hardware manufacturers in Istanbul](https://www.tamtam.ai/l/hardware-companies-istanbul) (66) - [Energy companies in Istanbul](https://www.tamtam.ai/l/energy-companies-istanbul) (64) - [Publicly traded companies in Istanbul](https://www.tamtam.ai/l/publicly-traded-companies-istanbul) (62) - [Food and beverage companies in Istanbul](https://www.tamtam.ai/l/food-and-beverage-companies-istanbul) (61) - [Construction companies in Istanbul](https://www.tamtam.ai/l/construction-companies-istanbul) (59) - [Food and Beverage Services companies in Istanbul](https://www.tamtam.ai/l/food-and-beverage-services-companies-istanbul) (54) - [Logistics companies in Istanbul](https://www.tamtam.ai/l/logistics-companies-istanbul) (53) - [Financial Services companies in Istanbul](https://www.tamtam.ai/l/financial-services-companies-istanbul) (47) - [Hospitals and Health Care companies in Istanbul](https://www.tamtam.ai/l/hospitals-and-health-care-companies-istanbul) (46) ## The same list elsewhere in Turkey - [IT services companies in Turkey](https://www.tamtam.ai/l/it-services-companies-turkey) (99) --- Source: https://www.tamtam.ai/l/it-services-companies-istanbul