Senior Java Developers

Description:

NEXUS currently has a .NET front-end, Java backend (Unix/Linux/AWS), Oracle PL/SQL, ARCGIS. This role is to maintain and enhance the Nexus backend including JEE, Tomcat and Spring applications.

The successful tenderer must be able to provide candidates with the following minimum skills:

• Develop enterprise-grade software using Java and RDB technologies
• Design, create and manage solutions on AWS Cloud
• Design data models, translate to physical data models and implement using a database
• Implement CRUD operations on the database using Java Object-Relational Mapping frameworks
• Produce and maintain detailed design artifacts & technical specifications
• Create and work with RESTful OpenAPI specifications, SOAP WSDLs, XML Schemas
• Develop and maintain DevOps workflows using Jenkins, Git, GitHub, Maven

Essential Criteria:

1. Excellent verbal and written communication skills in analysis, design, planning, support, documentation, and presentation contexts.

2. Ability to work autonomously, especially to ask questions, engage with business and gather requirements

3. At least 8 years Java experience, enterprise design patterns, JPA, Hibernate ORM, JEE an advantage, data structures, concurrency.

4. Technical skills • Broad experience with internal and external data integrations, e.g., SOAP and REST APIs, OpenAPI/XSD Schemas, XML/JSON, JMS. • AWS development (EC2, Lambdas, API Gateway, Beanstalk, S3, SQS, CloudFormation). • Unix/Linux, Bash. • Maven, Artifact Repositories, Continuous Integration, Unit and System Integration testing.

5. Major database experience, including data modelling, stored procedures. Oracle preferred.

6. Willingness to be 24x7 on-call. Historically calls escalated to the dev team between 10pm and 6am are rare, one per year.