Jobs and Careers

Senior Full-Stack Developer (Java & React)

CAI

NJ-CLIENT-STATE, United States, United Statesfull_timeVerifiedPosted 28 Jul 2026

💰 $124,000/yr($110,000/yr – $124,000/yr)

About the role

Req number:

R8203

Employment type:

Full time

Worksite flexibility:

Hybrid

Who we are

CAI is a global services firm with over 9,000 associates worldwide and a yearly revenue of $1.3 billion+. We have over 40 years of excellence in uniting talent and technology to power the possible for our clients, colleagues, and communities. As a privately held company, we have the freedom and focus to do what is right—whatever it takes. Our tailor-made solutions create lasting results across the public and commercial sectors, and we are trailblazers in bringing neurodiversity to the enterprise.

Job Summary

We are looking for a motivated Senior Full-Stack Developer (Java & React) ready to take us to the next level! If you have 10+ years developing in Java and React, designing secure APIs and database schema changes, and are looking for your next career move, apply now.

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. This position will be a full-time contract and hybrid, requiring candidates to work onsite in the Trenton, NJ office three days per week.

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 att