OLCAY ERGÜN, M.Sc.

Full-Stack Developer

2020 - Present

Freelancer, Sakarya,TR

Responsibilities

• Maximized applications’ efficiency, data quality, scope, operability, and flexibility.
• Used various ideas from distributed computing, large-scale design, real-time data processing, data storage, ML, and AI to solve challenging dataset problems.
• Managed, optimized, and updated PHP databases as necessary.
• Developed app integration with REST / SOAP and other APIs for Google Maps, social media logins, payment processors, and other services.

Manager & Senior Software Engineer

April 2014 – December 2020

T.C. Sakarya Buyuksehir Belediyesi SASKİ Genel Mudurlugu | Sakarya Center, Sakarya

Software development and requirement analysis,, Android Development with Android Studio, Vehicles Management

Responsibilities

• Android Development Management
• Vehicle Tracking System Development and Management
• Remote Vehicle Control Systems Development

Project Manager, Software Developer

September 2008 - February 2014

T.C. Sakarya Special Provincial Administration | Sakarya Center, Sakarya

Managing all investment project within the provincial, Development small software system with C, Java, HTML and C++

Responsibilities:

• Android Development Management
• Worked in build process, such as running build scripts to checkout the code from svn, to build it and deploying under UNIX boxes

Software Project Manager

February 2004 - August 2008

Turkmedya A.Ş., Istanbul

Development CRM Application Managing and Development Web Sites Embedded Device Development and C++ Software Development, HTML Software, Embedded Software Development, /MySQL, Visual Studio .NET

Responsibilities :

• Worked as Java Front End Developer using Ext JS framework and Object Oriented JavaScript (OOJS) to develop rich interactive user interface for CRS application a Desktop Application running in browser.
• Used core JAVA to implement data Structures including linked lists, stacks, queues, trees, hash tables and different sorting and searching algorithms.
• Used RESTFUL in conjunction with Ajax calls using JAX-RS.
• Developed and implemented Spring and J2EE based MVC (Model-View-Controller)
• Developed SQL stored procedures for performing CRUD operations on Oracle database.
• Development carried using Eclipse IDE.
• Used Spring framework for dependency injection and integrated it with Hibernate.

Software Engineer

March 2002 - January 2004

Telenity EMEA Headquarters, Istanbul

Mobile Application Development Content Management Systems Location Based Application Oracle SQL Administration,Mobile Software Development with C and Java, Oracle PL/SQL, Visual Studio.NET 2005(2.0)

Responsibilities :

• Involved in developing user interface using JSP, JavaScript, CSS and AJAX.
• Used Struts-tiles to develop the layout of web page.
Worked with Tomcat as the application servers and JMS as the message Server.
• Did unit testing and integration testing for the stop and transfer modules.
• Developed User- Interface screens involving Servlets, JSP, JavaScript and XML DOM parser.
• Asteriks application development
• JBoss Server was used as the application server for deploying the application.
• Developed and maintained web services using RESTful API.
• Used ANT Script for building and deploying the application.
• Used JDBC for interacting with database.
• Implemented various complex SQL queries
• Used MS-SQL, wrote stored procedures for common SQL queries.
• Used Log4j for logging application messages.
• Involved in Unit Testing and Bug-Fixing and achieved the maximum code coverage using JUNIT test cases.
• Used GIT repository for version control

Research Assistant

January 1998 - February 2002

Kocaeli University, Kocaeli

Responsibilities :

• Research on Computer Networks
• C, C++ and Java Development

Applications Specialist

March 1997 - December 1997

The University of Nebraska, Lincoln - Media Center | Lincoln, Nebraska

Responsibilities

• Assisting artists for using media applications
• PhotoShop, Macromedia Dreamweaver, Macromedia Flash including ActionScripting