Java Developer

Role: Senior Java Developer

Location: Decatur, IL (Preferred) / East Peoria, IL (alternate) - Need Locals only

Work Mode: 100% onsite, 5 days/week (Remote is not an option)

Duration: 6 months

Responsibilities:

• Design, develop, enhance, and maintain Java-based applications, services, APIs, and integrations as assigned by the client.
• Analyze approved functional and technical requirements and translate them into maintainable, well-engineered software solutions.
• Produce source code, configuration changes, unit tests, and supporting technical documentation in client-approved repositories and formats.
• Participate in technical design reviews, code reviews, backlog refinement, sprint planning, demonstrations, and delivery-status reviews applicable to assigned work.
• Perform unit and integration testing; support system and user-acceptance testing; investigate and correct defects attributable to delivered work.
• Troubleshoot application, interface, data, performance, and deployment issues associated with assigned deliverables.
• Support client-approved deployment and stabilization activities, including production defect analysis when assigned.
• Identify and communicate technical risks, dependencies, constraints, and blockers early enough to support timely resolution.
• Provide ongoing knowledge transfer to designated client personnel and complete end-of-engagement transition documentation.

Technical Competencies:

• Core Java (Java 8/11/17) with strong object-oriented design and problem-solving skills.
• Spring Framework / Spring Boot for building services, REST APIs, and enterprise integrations.
• Design and consumption of RESTful (and/or SOAP) web services; familiarity with API gateways and integration patterns.
• Strong SQL and relational database experience (e.g., Oracle, SQL Server, PostgreSQL) - schema design, query tuning, stored procedures.
• Unit and integration testing frameworks (JUnit, Mockito, or equivalent) and test-driven development practices.
• Build and CI/CD tooling (Maven/Gradle, Git, Jenkins/Azure DevOps or equivalent) in an enterprise delivery pipeline.
• Application and interface troubleshooting across data, performance, and deployment layers in a production support capacity.
• Working knowledge of Agile/Scrum ceremonies - sprint planning, backlog refinement, demos, and status reviews.

Behavioral Competencies:

• Capable of working independently in a large, complex enterprise environment with minimal day-to-day direction.
• Strong collaborator who partners effectively with both technical teams and business stakeholders.
• Clear written and verbal communicator; able to produce client-ready technical documentation and status updates.
• Proactive in surfacing risks, dependencies, and blockers early to support on-time delivery.
• Dependable and delivery-focused, with a strong sense of ownership over assigned work through to production stabilization.
• Comfortable mentoring and transferring knowledge to client personnel, including formal end-of-engagement transition.

Required Qualifications:

• 6+ years of professional Java development experience, including senior-level ownership of application design and delivery.
• Hands-on experience with Spring/Spring Boot, REST API development, and enterprise application integration.
• Strong SQL and relational database skills; experience with enterprise-scale data models.
• Proven experience with unit/integration testing, code reviews, and Agile/Scrum delivery practices.
• Experience troubleshooting production issues across application, interface, data, and deployment layers.
• Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience.