React JS Developer

Full-Stack DeveloperCandidates must be able to obtain and/or maintain a Department of Defense Secret Security Clearance as a condition and continuation of employmentLocation: Andover or Tucson (Hybrid — once a week onsite minimum)Job Type: 6 month contract with potential to extendExperience Level: 5–10 yearsPosition SummaryWe are seeking a Full-Stack Developer with 5–10 years of professional experience in Java and ReactJS to support mission-critical software systems. The ideal candidate will design, develop, and maintain scalable web applications that integrate secure backend services with dynamic, responsive front-end interfaces. The role requires strong problem-solving skills, attention to detail, and the ability to collaborate effectively in a structured, security-conscious environment.Key Responsibilities· Develop, test, and maintain full-stack applications using Java (Spring Boot) and ReactJS.· Design RESTful APIs and ensure secure, efficient communication between front-end and back-end components.· Collaborate with UI/UX designers, systems engineers, and database administrators to implement robust software solutions.· Participate in code reviews, integration testing, and deployment pipelines.· Write clean, maintainable code adhering to project-specific security and coding standards.· Troubleshoot and resolve issues across the stack to ensure application reliability and performance.· Support migration of legacy applications to modern web architectures where required.Required Qualifications· 5–10 years of experience in full-stack development using Java (Spring Boot) and ReactJS.· Strong understanding of object-oriented programming, RESTful API design, and secure web application development.· Proficiency with JavaScript, HTML5, CSS3, and modern frameworks such as Redux or Next.js.· Experience with relational databases (MySQL, PostgreSQL, or Oracle).· Familiarity with Git, CI/CD tools, and Agile development practices.· U.S. Citizenship (mandatory for access to defense-related systems).Preferred Qualifications· Experience in a DoD or aerospace/defense environment.· Working knowledge of containerization and orchestration (Docker, Kubernetes).· Familiarity with DevSecOps pipelines and secure coding practices.· Experience integrating APIs with identity management systems (OAuth2, SAML, etc.).Work Environment & Expectations· May require working in secure facilities or with sensitive defense data systems.· Flexibility to collaborate across time zones and travel occasionally for project needs.· Adherence to project-specific documentation, cybersecurity, and compliance standards is mandatory.Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico.Everforth Apex uses a virtual recruiter as part of the application process. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Everforth Apex and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at View email address on click.appcast.io or View phone number on click.appcast.io.