Okan Ozeren

Senior Lead Engineer

Telenity•  December 2020 - Present

• Actively being responsible for maintaining key web components and core back-end services for the leading communication networks across the globe with the team. • Constantly working to improve the scalability and reliability of Java and Javascript applications mentioned in the Projects section.

Expert Software Developer, Web Development

Telenity•  January 2016 - December 2020

• Led and mentored the team members on each step of the development lifecycle. • Performed full stack development and maintenance on distributed systems. • Single page (MVC/W) approaches have been adopted to create fast and easy installable web applications by my personal initiative. Thus, browser friendly and responsive web applications developed with ease. • Developed web applications, gateways and back-end servers using Java, Javascript and other web technologies. • Achieved memory and performance improvements by refactoring to design patterns on projects deployed at big telecommunication operators (e.g., Mobily, Ooredoo, Vodafone, Turk Telekom) in EMEA and APAC. • Participated in a lot of integration works for various micro services and protocols in the customers.

Senior Software Engineer

Telenity•  May 2011 - January 2016

• Designed data structures and implemented back-end services as part of the location based and service • delivery platform projects. • Designed a resource tracking & management system, supporting GSM/GPS based location tracking with a modern web interface and a friendly RESTful back-end. • Implemented restful web service modules for a family/resource tracking application which is actively running on two largest telecommunication operators of India (Airtel, Idea/Vodafone). • The number of bugs was significantly reduced in the projects I was responsible for. • Made mobile number portability (MNP) implementations. • Practiced Agile as part of a medium sized team.

Senior Software Developer

TTNET•  January 2010 - May 2011

• Designed and developed back-end web services (SOAP) and front-end web applications. • The developed subscription management platform integrated with a single-sign-on ecosystem which still actively serves the customers of the ISP over teksifre.turktelekom.com.tr domain. • The infrastructure consists of Java, Spring, Struts2, axis2, Weblogic, Oracle Identity Manager (OIM), Oracle Internet Directory (OID/LDAP).

Software Engineer

SteelOrbis•  October 2008 - January 2010

• Designed and developed user interfaces have been on a very large scale, unique e-marketplace and up-to-date market intelligence provider platform. • The infrastructure consists of Java, Spring, Struts1, DB2, Javascript, JQuery.

Software Engineer

SYS System Design & Integration Inc.•  June 2005 - October 2008

• Designing, development, testing and installation of modular and fully integrated web and desktop applications as a member of a team. • A change request management web application developed using Java, Spring, Ajax, JQuery, PostgreSQL. • New data transfer protocols were developed between a web application and a natural gas volume corrector device.