Core Java Developer With Python, Ruby, PerlLocation: Philadelphia, PAPosition Type: ContractRate: DOEInterview Process: Phone followed Face to FaceLocals To PA.Requirements:3+ years experience building Java-based web sites, web applications or middleware/backend APIsKnowledge in JavaExperience building and/or using RESTful web servicesFundamental understanding of the HTTP protocolExperience in caching especially in HTTP compliant cachesAdditional Preferred Skills:Knowledge in several of: Ruby, Python, Clojure, GolangKnowledge of Hypermedia Application Language (HAL) web servicesExperience with Agile/ScrumKnowledge of source control systems (Subversion, Git)Knowledge of Continuous Integration and Deployment tools (Jenkins, AntHillPro)Experience with automated web application testing tools (e.g. Cucumber)Familiarity with cloud computing (S3, SQS, Hadoop...)UNIX background (Solaris/Linux)DevOps / OpenStack experienceStorm / Kafka and real time event processing experience