Senior Infra Java Developer

Responsibilities

Excellent knowledge in Java, J2EE
• Core Java
• Hibernate, JPA, JTA
• Spring, XMLBeans
• Web Services, XML, XSD
• SQL, Oracle
• MQ, JMS
• WebSphere/WebLogic

Excellent knowledge in Java, J2EE
• Core Java
• Hibernate, JPA, JTA
• Spring, XMLBeans
• Web Services, XML, XSD
• SQL, Oracle
• MQ, JMS
• WebSphere/WebLogic

Understanding of the operating systems and how they work:
• What is the difference between virtual storage and real memory?
• What is paging and swapping.
• Types of shared memory in Unix systems and its usage
• Usage of Unix commands. (ps,pstack,pmap,vmstat iostat netstat etc).
• NLS – what is local encoding, what is Unicode. Different types of Unicode.
• Little Endian and Big Endian. Where do we need to pay attention?

MQ – usage of MQ commands. The structure of MQ messages. Different types of MQ messages (String Binary). Conversion of MQ messages.

Oracle. Using efficient indexes. Identifying distinctive value columns. Understanding explain plans, stored procedures, AWR, ASH, ADDM reports.

Configuration tuning, NFT support, Performance issue and memory related issue analysis skill