Bulent Eren

Mobile & Full Stack Developer

Bulent Eren

Mobile & Full Stack Developer

Profesional Profile

C, C++, C# expertise over 25 years. Certified Xamarin mobile developer.

From single file databases to appliances. In-memory or big data. Worked with all kind of databases. Data exploration with tools like Alteryx & Tableau. Solved complex migration problems. Custom ETL development. 2015 TDWI's big data project winner.

Image processing. Custom OMR & OCR solutions.

My Skills
Reverse Engineering

My Portfolio

An eye for detail makes our works excellent


My education and experience
  • College
    TED Ankara | 1983 - 1990

    • Began the journey with a Commodore 64.

  • Electronic Engineering, B.S., M.Sc.
    Ankara University | 1990 - 1997

    • Wrote the first anti-virus program of Turkey called "ARA".

  • Research & Development
    Merlin Bilgisayar Hizmetleri San. ve Tic. A. Ş. | 1999 - 2002

    • Warehouse & Data Collection Applications • First SAP R/3 integration in Turkey • First Windows Mobile terminal application • Y2K problem solving • Generic ETL tool • Exchange Server mail automation tool

  • Senior Specialist
    Garanti Technology | 2002 - 2010

    • Alternative delivery channels’ projects • First in Turkey and one of the early adopters in the world CEN / XFS (WOSA) & web-based multivendor ATM application • First bundle cash-in in Turkey • First cardless menu in Turkey (Winner of 8th Ahmet Dalli Banking reward) • First SMS based money transfer in the world (Cepbank) • First coin dispensing in Turkey • Cash Recycling from ATM's • Proactive ATM Monitoring • New Turkish Lira conversion • ATM EMV Project • Watchdog application that recovers freezed ATMs • System performance optimizations

  • Data Management Manager
    TTNET | 2010 - 2017

    • DWH related operations • CRM & Billing migration from legacy system to new SEP architecture (written nearly 100K lines of code, multi-threading, in-memory database, bulk oracle copy, extract 40 million records, transform them to 2.2 billion records and load them to two different systems under 8 hours) • In-Memory web-based outbound campaign application • Fiber migration automation tool • Document archive application that holds all the reports of the company with different file formats • IT operational dashboard application • Daily ETLs for Data Warehouse (Business Objects Data Integrator & Informatica) • Business Objects metadata extractor application that also extracts custom SQLs • Business Objects monitor application which automatically recovers failed services • Web scraper application which automatically navigates pages and input data • Big Data projects with IBM Streams (CEP) and BigInsights (Hadoop) • Teradata architecture know-how and communications logical data model • Custom written Data Federation application with its own odbc driver • Android based digital signage solution • Power outage and restoration management using only radius protocol data

  • Founder & Developer
    BEBYAZ | 2017 -

    • Freelance & contract based solutions.