Dear Professionals,
I’m looking for a Sr. Back End Java Developer to join an in-house project
in Reading, PA. We have *two *positions open. This is an in-house ongoing
project with an open end
date
.
We need two *senior* candidates: Interviews can be arranged *as early as
today* and they can be hired today also.
The qualified candidates must have *at least 10 years* of experience in
Back End Java Development.
The following skills are required:
Knowledge for JVM memory model.
- How memory is collected.
- Different JVM memory areas.
- Limitations on JVM memory model.
- How to execute basic GC tuning.
- GC fundamentals
Threading
- Knowledge of locking semantics on JVM
- Knowledge of Concurrent data structures, how to use them, and
differences
- ExecutorService knowledge
- Pitfalls of mutable state on classes
Distributed Systems
- Explain how replication and distributed data work
- Be able to explain how to make an Java application clustered
- Understand the issues of creating an distributed app: drawbacks, code
conventions, patterns
- Be able to explain different cluster topologies : P2P, Master Slave
and
Testing
- Understand the basics of xUnit framework
- TDD
- Mocking testing
- Integration testing
Basic Framework knowledge
- Knowledge of Spring framework
- AOP concepts
- JMS messaging, and basic MoM concepts
- JAX-RS
- ORM knowledge
- Understanding of Servlet filters, wrappers, and listeners
REST design
- Be able to describe the principles behind REST
- Understand Content negotiation, nice URIs, verbs and http codes
- Be able to understand limitations/improvements of REST designs vs
other distributed protocols (SOAP, RMI, CORBA, Thrift …)
- Understand and describe how security works with REST
NoSQL
- Be able to describe the concepts behind NoSQL
- Good to have experience with at least one NoSQL model (document,
column, graph, key-value)
- Describe the drawbacks associated with NoSQL databases when compared
to traditional RDBMS
Transactions
- Understand transactions principles
- Understand what JTA is
- Be able to describe what is 2PC, and how it works on Java
- Understand compensating transactions concept
- Pessimistic and optimistic locking approaches
Thank you!
*Looking forward to work with you.*
* *
*Naresh Bisane*
*Resource Specialist*
*Mobile: 443-832-3347 *||* fax: 972-584-9308*
*nar...@isolutionstek.com <mark.spen...@isolutionstech.com>** *||
www.isolutionstech.com* *
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