Java Back End Developer (Contract)

Role overview

Responsibilities

• Design, develop, enhance, and maintain enterprise applications using Java 17 or Java 11.
• Build scalable backend services using Core Java, object-oriented programming, frameworks, and enterprise practices.
• Develop and tune PostgreSQL schemas, queries, stored procedures, and database performance.
• Migrate Oracle and other legacy databases to PostgreSQL with data validation and performance optimization.
• Develop and troubleshoot SOAP, WSDL-based, and REST integrations.
• Support Kubernetes applications and manage Docker containers and deployments.
• Automate build, testing, deployment, and release processes using Git and CI/CD pipelines.
• Monitor applications, resolve production issues, perform root-cause analysis, and implement permanent fixes.
• Collaborate across architecture, DevOps, database, QA, and business teams and maintain technical documentation.

Technical skills

• The role requires Java, Core Java, object-oriented programming, Java frameworks, and enterprise application development.
• Required technologies include PostgreSQL, Oracle migration, SOAP, WSDL, REST APIs, Kubernetes, Docker, Git, CI/CD, monitoring, logging, and observability tools.

Architecture and standards

• Applications must meet enterprise standards for security, scalability, reliability, performance, and maintainability.
• The role modernizes legacy applications toward containerized and cloud-native architectures.

Employment

• The source title identifies this position as a contract role.

Requirements

• Experience developing enterprise applications using Java 17; Java 11 experience is acceptable.
• Experience with Core Java, object-oriented programming, Java frameworks, and enterprise development practices.
• Experience with PostgreSQL schema design, query optimization, stored procedures or functions, performance tuning, and troubleshooting.
• Experience migrating databases from Oracle and other legacy systems to PostgreSQL.
• Experience developing and troubleshooting SOAP web services, WSDL integrations, and REST APIs.
• Experience supporting Kubernetes-based applications and deploying containers with Docker.
• Experience with Git, CI/CD pipelines, monitoring, logging, and observability tools.
• Experience analyzing production issues and performing root-cause analysis.