Senior Java Developer

Website Princeton IT Services, Inc

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Job Title: Senior Java Developer

Location: Mt. Laurel, NJ

Position Type: Long term (W2 only)

Job Summary:

Responsible for designing and developing software applications and application extensions using a combination of Java technologies and modern Big Data platforms and streaming technologies. Guides the integration and deployment of a broad range of components, from lab development environments to QA and production. Troubleshoots and analyzes production issues. Documents work activity using a blend of Agile technologies and WIKI based content management systems. Collaborates closely with both senior and junior colleagues.


  • Develops production quality code that is thoroughly tested
  • Designs custom applications using sound architectural and design principles
  • Conducts performance and scalability testing with customized load generating tools
  • Automates the integration and delivery of software changes to development, test, and production environments using version controlled playbooks and configuration files
  • Works with the Quality Assurance team to determine if applications meet technical requirements
  • Supports the deployment of new software releases
  • Diagnoses performance issues both in the lab and in production, proposing and implementing code improvements
  • Analyzes and resolves complex technical problems, particularly pertaining to Big Data products and applications
  • Analyzes large data sets containing billions of entries
  • Spark based analysis of large data sets containing billions of entries
  • Designs, develops, and deploys meaningful metrics for system and application monitoring and alerting
  • Analyzes and troubleshoots complex coding issues across multiple interrelated components
  • Understands and identifies underlying Linux platform issues affecting overall system behavior
  • Participates in on-call rotation

Technical/Functional Skills:            

Strong skills in the following areas:

  • Language Master: Java
  • Frameworks: SpringBoot
  • Big Data: Kafka, Spark
  • NoSQL: Cassandra
  • Automation: Gradle, Concourse, Ansible
  • OS: Linux, Shell Scripts
  • Strong experience developing large-scale streaming solutions using Kafka and Cassandra
  • Strong experience in multi-threaded applications and parallel processing, with a strong grasp of concurrency concepts
  • Strong experience with Linux and Cloud native systems in a DevOps environment
  • Experience with high volume batch and streaming data processing technologies such as Spark
  • Experience in performance tuning and testing
  • Working knowledge of messaging technologies such as JSON and REST
  • LaaS experience, i.e., ELK stack (Elastic Search, logstash, Kibana) for monitoring
  • MaaS experience, i.e., Telegraf, Prometheus, Grafana, Alerta
  • Good verbal and written communication skills
  • Experience writing technical system admin guides, installation guides and troubleshooting guides

Additional Desired Experience

  • Experience in Python, Scala
  • Experience with relational databases such as MySQL
  • Experience with MongoDB
  • Experience in AngularJS
  • Experience in Kubernetes and Docker
  • Experience developing and deploying applications to AWS
  • Experience troubleshooting, analyzing and diagnosing JVM runtime problems
  • Experience with TCP/IP, networking technologies, and protocols, particularly DHCP, TFTP, SNMP, DOCSIS
  • Knowledge of Cisco Prime Cable Provisioning and Cisco Prime Network Registrar products

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