Java Software Developer - European Central Bank, DGIS/EDA
Participated in IT projects throughout the complete lifecycle for the development of IT application services and the ECB change management lifecycle. Ran performance optimization of applications (MOPDB Replication and EXDI Hibernate (DML operations) based on Oracle Parallelization PX and Optimizer Execution Plans). Designed and drafted technical specifications of application systems in line with functional and nonfunctional requirements. Performed technical testing and prepared technical documentation. Supported end users during acceptance tests and operational teams during migration to production environment. Investigated, diagnosed, and resolved bugs and incidents in the post-go-live support of operations. Developed scripts and procedures for building and packing application components. Reviewed and implemented security policies to the databases, ensuring data consistency and integrity. Developed working knowledge of business processes implemented in the applications based on Agile Scrum Methodologies. Technologies used: Linux Red Hat, CentOS, Solaris, Java 5/6/7, Tomcat 6/7, Apache 2.2x, WebLogic, Maven, Eclipse, Nexus, Jira, SVN Git and Mercurial, Spring MVC, Spring WS, iBatis and MyBatis, Hibernate, JMS, Oracle, MySQL, Apache Common Math (MathLib JAMA), Log4J and SL4J, Gradle, Ant, AQAPI, Ehcache and OSCache, JSTL, JTA, Quartz Scheduler, REST, XML XSD and WSDL, SoapUI, JSON, SQL Developer and Toad, X-Mind, Bash, TCSH, Cygwin, Python, JasperReports, and Crystal Reports.
DevOps - Oracle DBA / Unix Solaris/Linux RH Systems, European Central Bank, DGIS/INO/DAC SYS
Worked in the DG-IS-DAC division on ongoing projects and application integration tasks to enable new and rectified functionality based on business requirements (business analysis). Supported infrastructure of Sun Enterprise-class servers running Solaris OS and HP Blades running Solaris OS/Linux Red Hat 3/4/5/6/7 recently with satellite integration and administration. Handled patching, performance tuning, and DataGuard replication and patching. Provisioned Virtual Machines (Solaris Zones / LDOMs / VMware) and performed day-to-day activities including managing FS, LUN replacement, restoring files, configuring adjustments, cooperating with hardware /software vendor, log analysis. Configured TSM clients. Performed root cause analysis of failures and implemented permanent solutions/workarounds to solve problems. Actively participated in quarterly failover exercise. Technologies used: Linux Red Hat, CentOS, Solaris, Java 5/6/7, Tomcat 6/7, Apache 2.2x, WebLogic, Maven, Eclipse, Nexus, Jira, SVN Git and Mercurial, Spring MVC, Spring WS, iBatis and MyBatis, Hibernate, JMS, Oracle, MySQL, Apache Common Math (MathLib JAMA), Log4J and SL4J, Gradle, Ant, AQAPI, Ehcache and OSCache, JSTL, JTA, Quartz Scheduler, REST, XML XSD and WSDL, SoapUI, JSON, SQL Developer and Toad, X-Mind, Bash, TCSH, Cygwin, Python, JasperReports, and Crystal Reports.