Gazi University

ODTÜ Sürekli Eğitim Merkezi (SEM)

ODTÜ Yabancı Diller Yüksek Okulu

EMO Ankara Şubesi Eğitim Merkezi

Prestige Education Center

Kahraman Maraş İbrahim Çalık High School

Senior Software Engineer at Rabobank

Bank Mendes Gans

Senior Software Developer

- Authorisation and authentication API implementations and bug fixing. 
- Customer journey implementation for iDEAL QR.
- Executing deployments to the TEST and PROD environments
- Investigation the cases from customer tickets
- Designing and implementing new applications
- Documentations for the requirements and flows
- Migration: <= java7 to java8-java11, servlet/war to Spring Boot, Bitbucket to Azure, Jenkins to Azure Devops
- Test automation on local and on cloud

Rabobank

Senior Software Engineer

Internal Projects:
- New feature implementations and bug fixing. Refactoring the code and test code improvement
- Follow up the works of other developers. The code review of the pull requests and merging to development and master branch
- Designing and validating Frontend-Backend integration
- Executing deployment process

Projects:
- Devcase: Fullstack Developer for an internal application used to manage candidates assignments. From a technical point of view, the backend is a Spring boot and Java 8 application, while the frontend is an Angular single page application. They are integrated with secure REST APIs. The API accepts auth0 token and has role-based validations.

Sytac

Senior Java Developer

KLM Contract
- New feature implementations and bug fixing. Integration with internal/external REST/Web services as the client. Insurance product implementations for country base required fields. Database updates using liquibase scripts
- IBM MQ queue and topic integrations to speed up application flows
- Integration between frontend and social media service as middleware
- Feature documentations and creating helper pages for developers on the Confluence
- Automation test implementation by using JBehave and Spring

Projects:
- OrderAPI: The application is a middleware application by integrating internal core systems and external partners. It manages flight booking, making reservations, checkin service flows. It is integrated by financial systems, support operation management, global distribution systems (like Amadeus) etc. It opens secure APIs to frontends (website, mobile app etc.), travel agencies, partners (Google Flights, Air France etc.) and other indirect distribution channels

Senior Java Developer At KLM

- Developing Rest services with Java and Python by using OSGI, Spring and Grpc
- Developing Spring boot applications, creating batch processes and managing database via Hibernate and JDBC template 
- Designing and contributing for open source communities
- Designing and creating DevOps environment by using Jenkins, Git, Docker, Maven, Sonarqube, Apache Archiva, Ansible

Projects:
- SDN: SDN is an approach to network virtualization that seeks to optimize network resources and quickly adapt networks to changing business needs, applications, and traffic. 
- TT 5G Transformation: Working with and contributing for some open source communities like ONOS, Linux Foundation and ONAP. Creating 5G applications for Turk Telekom.

Netsia, Inc

- Designing  and developing a core java application that accepts subscription-unsubscription requests and subscription queries.
- TLD Documentation  for solution
- Designing a  multi-threaded  web application that is working on offline files
- Integrating the application with some internal applications and customer services via SOAP client.
- Supporting test team during deployment and acceptance test

Projects: 
- USSD Browser: An subscription USSD interface for a Qatar operator. 
- Legal Intercepter Agent: An application for an operator from Italy. Watching SMSs and catching SMS from defined MSISDNs. Reporting the catched SMSs to Operator.

Telenity

- Designing and developing new components, services, modules and applications with OSGI, Spring and EJB
- Service and client implementation for SOAP and REST web services
- Dependency management for wildfly (Jboss), OSGI by using maven and ant build tools
- Postgresql, Oracle and MySql database integration by using JDBC, Hibernate, MyBatis and Alembic
- Release management on git and bitbucket version control tool by using gitflow methodology
- Cluster and distributed data implementation with Hazelcast, Infinispan
- Code review  and executing merging processes
- Joining version upgrade operations on side
- Maintaining old projects

Projects:
- SDN Project
- Smart City Project: Integrated camera APIs and using it in image processing for face and plate recognition. Putting all events to HBase to use them for data mining. Speed corridor, traffic infringement detection etc.
- IpTV Project: Includes subscription management, TV and VOD package management, online charging, campaign management.

Argela Technologies

- Developing  microservices, components, SOAP web services and servlets with Spring
- Data persisting  on Mysql and Oracle database by using Hibernate framework and querying data by HQL (Hibernate Query Language)
- Release and dependency management by using ANT build tool
- Supporting test team for test automation by SOAP UI, Jmeter and Selenium

Projects:
- Targeted Advertisement platform (TAP): contains agency profile, advertiser profile, campaign and advertisement management, static and dynamic advertisement services

Junior Software Developer

- Installation and management third-party applications like Weblogic, Radius, Nagios, Glassfish, Mysql, Oracle etc. on Unix Operating Systems
- Deployment on test and production environment
- Automation by bash scripting
- Functional and load tests with SOAP UI and Jmeter
- Dry run and acceptance tests on client side
- 7/24 support

Projects:
- Targeted Advertisement platform (TAP)
- Wirofon, Tuitalk (VOIP Applications)

Resul Avan