Serdar Cetin

Partner at PurpleCrest

📍 London, England, United Kingdom🔄 Updated September 2026💼 8 investments📅 21 years investing🗓 Last invested Aug 2025
Angel investor🌍 United Kingdom
8
Total investments
3
Early stage
0
Mid stage
0
Late stage
21y
Years active

Portfolio

5 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Board Member
Jun 2022
Turkcell is a converged telecommunication and technology services provider, founded and headquartered in Turkey. It serves its customers with voice, data, TV and value-added consumer and enterprise services on mobile and fixed networks.Turkcells shares have been traded on the Borsa Istanbul (BIST) and New York Stock Exchanges (NYSE) since July 11, 2000, and it is the only Turkish company to be listed on the latter exchange. Turkcell is also quoted on the Borsa Istanbul Sustainability Index. Turkcell’s target has been to become an integrated communication and technology services player in the region, operating a converged mobile and fixed network platform and offering a wide range of innovative products and services. Turkcell believes that it is important to offer our consumer and corporate customers the full range of our mobile, fixed and broadband services to meet their expectations. Turkcell also has investments abroad. KKTCell, a 100%-owned subsidiary of Turkcell, was established in 1999 and operates within the framework of a revenue-sharing agreement with the Telecommunications Authority of the Turkish Republic of Northern Cyprus. lifecell, a company in Ukraine in which Turkcell holds a 100% stake, began operating in February 2005. Turkcell also acquired an 80% stake in BeST from the State Committee on Property of the Republic of Belarus in 2008. Turkcell has been present in Germany with the Turkcell Europe brand since 2011, and continues operations in that country through a marketing partnership with a subsidiary of Deutsche Telecom. Turkcell, with its wide coverage area and diverse range of services abroad, is therefore, able to provide its subscribers with mobile communication services, both in Turkey and around the world.
Board Member
May 2020
Dos mil caracteres no alcanzan para contar todo lo que hemos hecho, lo que hacemos y lo haremos. Pero aquí algunos datos: 1. Tenemos la única red 100% 4G con súper velocidad en Colombia. 2. Estamos aumentando nuestra cobertura, instalando hasta 100 antenas por semana. 3. El efecto WOM: En el último año, los precios de los planes pospago en el país bajaron un 52% 4. Llegamos a 2 millones de usuarios en nuestro primer año de operación y seguimos creciendo 5. Hemos generado más de 2.500 empleos de calidad directos y 1.500 indirectos a nivel nacional. Damos voz a aquellos que a través de la tecnología buscan un cambio positivo, que siempre quieren más y desafiar lo que “se supone debe ser”. #CambiaLasReglas
Board Observer
Sep 2019
Machine Zone is a global leader in mobile gaming, with a track record of delivering some of the world’s most successful mobile games including Game of War, Mobile Strike and Final Fantasy XV: A New Empire. We combine the power of technology and creative vision to create experiences that connect people from all corners of the globe. Machine Zone’s real time engagement engine (RTE) powers everything from player acquisition to real time game operations. The scale and speed of Machine Zone’s RTE allows the continuous optimization of player engagement and experience. Machine Zone was acquired by AppLovin in May 2020.
Board Member
Feb 2015
WOM es el resultado de las ganas de innovar, ser diferentes y revolucionar el mercado de las telecomunicaciones en Chile. Queremos hablar, queremos escuchar, porque más que una empresa de telecomunicaciones, somos un medio para comunicarnos, para decir lo que queremos; discutir y conversar de persona a persona y hacer uso del boca a boca (Word of mouth – WOM – en Inglés) porque #nosimporta ser más que una compañía. Somos versátiles, sin miedo a decir lo que pensamos porque somos VALIENTES y HONESTOS. Queremos ofrecerte un servicio de excelencia, internet de alta calidad y a un precio justo, gracias al despliegue de nuestra red propia con cobertura nacional. Porque somos INNOVADORES, y nos mueve una gran PASIÓN, es que WOM es para ti. Nuestra historia WOM nace a partir de la compra de Nextel por parte de Novator, un fondo de inversiones internacional, a comienzos de 2015. Hoy WOM está liderado por nuestro CEO Sebastián Precht, que cuenta con más de 20 años de experiencia en el mercado de las telecomunicaciones. ¡Súmate a la revolución de WOM, y se parte de nuestra historia!
Board Member
2007
It is people who create a network. Welcome to PLAY, a meeting place of possibilities and new technologies. We have been present on the Polish telecommunications market since 2006. Initially few people expected us to succeed; however, they changed their minds in a flash as our plans, competitively priced and offering more and more technologically advanced solutions, quickly earned recognition and set out a direction of growth for the whole industry. At present we are developing particularly intensively our 4G LTE Ultra network, which already covers more than 74% of Polish people. We have already earned the trust of more than 16 million customers. This means that our market share is already over 25%. We are pleased with that; however, that is still not enough for us as we are as ambitious as at the beginning and we continue building the position of the PLAY brand together. More than 2,600 people work with us. In the sales network, at the head office, at branches. These are people full of passion who believe in what they are doing and who believe in the company which they work for. It is an unforgettable experience to work in such a team. It’s worth taking such an opportunity – we hope to see you!
Experience · 11 entries
All (11)
Investments (8)
Board (8)
2025
Board Member
Aug 2025
Київстар – найбільший український оператор електронних комунікацій, що станом на березень 2023 року обслуговував 24,3 млн абонентів мобільного зв’язку та понад 1,1 млн абонентів «Домашнього інтернету». Компанія надає послуги з використанням широкого спектра мобільних і фіксованих технологій, у тому числі 4G, Big Data, Cloud solutions, сервіси для кіберзахисту, цифрове ТБ та ін. Київстар допомагає абонентам, суспільству та країні долати складнощі воєнного часу. На липень 2023 року компанія надала гуманітарної допомоги країні, абонентам, ЗСУ на суму майже 1,1 млрд грн, а також інвестувала 6,7 млрд грн у відбудову та розвиток телеком мережі. Акціонер Київстар – міжнародна Група VEON. Акції Групи знаходяться на фондових біржах NASDAQ (Нью-Йорк) та Euronext (Амстердам). Київстар 25 років працює в Україні та визнаний найбільшим платником податків на телеком-ринку, кращим роботодавцем і соціально відповідальною компанією.
2023
Partner
Apr 2023
We are an investment house with expertise in developing processes, digital infrastructure and customer centricity that businesses require to win.
2022
Board Member
Jun 2022
Turkcell is a converged telecommunication and technology services provider, founded and headquartered in Turkey. It serves its customers with voice, data, TV and value-added consumer and enterprise services on mobile and fixed networks.Turkcells shares have been traded on the Borsa Istanbul (BIST) and New York Stock Exchanges (NYSE) since July 11, 2000, and it is the only Turkish company to be listed on the latter exchange. Turkcell is also quoted on the Borsa Istanbul Sustainability Index. Turkcell’s target has been to become an integrated communication and technology services player in the region, operating a converged mobile and fixed network platform and offering a wide range of innovative products and services. Turkcell believes that it is important to offer our consumer and corporate customers the full range of our mobile, fixed and broadband services to meet their expectations. Turkcell also has investments abroad. KKTCell, a 100%-owned subsidiary of Turkcell, was established in 1999 and operates within the framework of a revenue-sharing agreement with the Telecommunications Authority of the Turkish Republic of Northern Cyprus. lifecell, a company in Ukraine in which Turkcell holds a 100% stake, began operating in February 2005. Turkcell also acquired an 80% stake in BeST from the State Committee on Property of the Republic of Belarus in 2008. Turkcell has been present in Germany with the Turkcell Europe brand since 2011, and continues operations in that country through a marketing partnership with a subsidiary of Deutsche Telecom. Turkcell, with its wide coverage area and diverse range of services abroad, is therefore, able to provide its subscribers with mobile communication services, both in Turkey and around the world.
2020
Board Member
May 2020
Dos mil caracteres no alcanzan para contar todo lo que hemos hecho, lo que hacemos y lo haremos. Pero aquí algunos datos: 1. Tenemos la única red 100% 4G con súper velocidad en Colombia. 2. Estamos aumentando nuestra cobertura, instalando hasta 100 antenas por semana. 3. El efecto WOM: En el último año, los precios de los planes pospago en el país bajaron un 52% 4. Llegamos a 2 millones de usuarios en nuestro primer año de operación y seguimos creciendo 5. Hemos generado más de 2.500 empleos de calidad directos y 1.500 indirectos a nivel nacional. Damos voz a aquellos que a través de la tecnología buscan un cambio positivo, que siempre quieren más y desafiar lo que “se supone debe ser”. #CambiaLasReglas
2019
Board Observer
Sep 2019
Machine Zone is a global leader in mobile gaming, with a track record of delivering some of the world’s most successful mobile games including Game of War, Mobile Strike and Final Fantasy XV: A New Empire. We combine the power of technology and creative vision to create experiences that connect people from all corners of the globe. Machine Zone’s real time engagement engine (RTE) powers everything from player acquisition to real time game operations. The scale and speed of Machine Zone’s RTE allows the continuous optimization of player engagement and experience. Machine Zone was acquired by AppLovin in May 2020.
Show all 11 entries ↓
Investment activity
2005–2025 · 8 investments
20051200722015120191202012022120251
Recent (last 2 years)Earlier