Senior Java FullStack Developer

Senior Java Full-Stack Developer Location: Trenton, NJ Hybrid (3 days Onsite, 2 days Remote) Duration: Contract

Interview will be onsite

Job Description We are looking for a Senior Full-Stack Developer (Java & React) to design, develop, modernize, and support enterprise web applications for our client.

What You’ll Do Refactor and modernize legacy Java-based applications into scalable, maintainable Spring Boot microservices

Design, develop, and maintain responsive user interfaces using React, JavaScript, CSS, and Bootstrap

Develop and consume secure RESTful APIs to support enterprise application integrations

Analyze business requirements and translate them into technical solutions that align with standards and best practices

Design, optimize, and maintain relational database structures, with a strong focus on Oracle database performance and SQL optimization

Perform unit, integration, and component testing using JUnit, Mockito, and React Testing Library

Troubleshoot application issues and provide production support for enterprise systems

Implement software builds, deployments, and release management through CI/CD pipelines

Collaborate with business stakeholders, analysts, architects, and development teams throughout the software development lifecycle

Enforce coding standards, development best practices, and application security requirements

Support application enhancements, bug fixes, and ongoing modernization initiatives

Participate in code reviews, technical design discussions, and knowledge-sharing activities

What You’ll Need Required:

Bachelor's degree in Computer Science, Information Technology, or a related field

LinkedIn profile required

10+ years of experience with Java development (Core Java and modern Java frameworks)

7+ years of experience with system refactoring and monolithic application modernization

7+ years of experience with Spring Framework technologies including Spring Boot, Spring MVC, and Hibernate

7+ years of experience working with relational databases and data analysis

5+ years of experience developing applications with JavaScript and React

5+ years of experience with CSS and Bootstrap

5+ years of experience designing and developing RESTful APIs

5+ years of experience performing developer-level testing using JUnit, Mockito, and React Testing Library

5+ years of experience with software deployment processes and CI/CD tooling

Strong understanding of software development lifecycle (SDLC) methodologies

Experience supporting enterprise-level web applications throughout the full application lifecycle

Ability to work effectively in a hybrid team environment

Preferred:

7+ years of Oracle Database management and SQL performance optimization

Experience with application modernization and cloud-ready architecture design

Experience implementing microservices-based architectures

Experience supporting public sector or education-related enterprise applications

Strong analytical, troubleshooting, and problem-solving skills

Experience working in Agile/Scrum development environments

Physical Demands Ability to safely and successfully perform the essential job functions consistent with the ADA and other federal, state, and local standards

Sedentary work that involves sitting or remaining stationary most of the time with occasional need to move around the office to attend meetings and collaborate with team members

Ability to conduct repetitive tasks on a computer, utilizing a mouse, keyboard, and monitor

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