Java Full Stack Developer Contractor

Java Full Stack Developer ContractorKAYGEN is an emerging leader in providing top talent for technology-based staffing services. We specialize in providing high-volume contingent staffing, direct hire staffing and project-based solutions to companies worldwide ranging from startups to Fortune 500 and Managed Service Providers (MSP) across a wide variety of industries.Seeking an experienced Java Full Stack Developers with strong ReactJS expertise to design, build, and maintain enterprise-grade applications for the Edward Jones engagement. The ideal candidate will be proficient across the full stack — Java backend, React frontend, APIs, and cloud-native services.Duration: Through 3/12/27, possible extensionLocation: Onsite 2 days a week at any Deloitte officeDesign and develop full stack applications using Java and ReactJSBuild and maintain RESTful APIs and microservices using Spring Boot and Spring JPADevelop responsive, accessible frontend components using React and modern JavaScript/TypeScriptIntegrate with messaging infrastructure — Kafka — and cloud services on AzureWork with relational databases (MS SQL) and apply sound data modelling practicesFollow micro-service architecture patterns and API gateway standardsCollaborate with tech leads, product owners, scrum masters, and QA engineers in an agile teamParticipate in code reviews and contribute to engineering best practicesSupport CI/CD pipeline integration and DevOps practices7+ years of software development experienceStrong proficiency in Java, Spring, Spring Boot, Spring JPA, and REST APIsStrong experience with ReactJS and modern front-end development (HTML, CSS, JavaScript, TypeScript)Experience with RESTful API development, API gateways, and integration patternsWorking knowledge of Kafka, Kubernetes, MuleSoft, and Azure cloudExperience with MS SQL and general knowledge of cloud best practicesFamiliarity with micro-service architectureBachelor's degree in Computer Science, MIS, or related field preferredFinancial Services background preferred. ReactJS experience is strongly preferred over other front-end frameworksRate: $50 - 55/hourAt KAYGEN, people are at the heart of everything we do. We foster a diverse, inclusive, and employee-driven culture where every individual is valued, empowered, and encouraged to bring their authentic self to work. Our candidate-first approach means we are committed to understanding your career goals and connecting you with opportunities that align with your aspirations, skills, and potential. Whether you're taking the next step in your career or searching for your dream opportunity, KAYGEN is more than a staffing partner—we're a community dedicated to helping you grow, succeed, and thrive.Benefits:Free Healthcare Insurance401(k) Retirement PlanFree Life InsuranceSick Time OffAchieve your Kaizen by clicking here. A unique and exclusive talent community supported by KAYGEN, that includes programs like:Mentorship ProgramCertificationsReferralsFamily and Wellness benefitsContinuous Growth and Career Development