Overview

Role: Core Java & UI Developer Expert Location: Atlanta, GA / New Jersey (Hybrid) Type: Contract Day to Day Job Duties Design, develop, enhance, and maintain enterprise applications using Core Java and modern UI technologies. Build scalable backend services and APIs using Java, Spring Boot, RESTful services, and microservices-based architecture patterns. Develop responsive, reusable, and high-performing user interfaces using React.js, Angular, JavaScript/TypeScript, HTML5, and CSS3. Integrate UI components with backend services and APIs, ensuring reliable data flow, error handling, security, and performance. Apply object-oriented design principles, design patterns, multithreading/concurrency concepts, collections, exception handling, and performance tuning in Java solutions. Participate in application architecture, technical design, code reviews, estimation, sprint planning, and solution discussions with engineering and product teams. Write clean, maintainable, testable, and secure code with appropriate unit, integration, and UI automation coverage. Troubleshoot complex application and production issues across UI, API, service, and database layers and drive root-cause resolution. Contribute to CI/CD pipelines, automated builds, code-quality checks, release processes, and deployment readiness. Collaborate with architects, product owners, business analysts, QA engineers, DevOps teams, and other developers in an Agile delivery model. Work on-site 3 days per week at the assigned Atlanta, New Jersey, or Dallas office to support team collaboration and Agile ceremonies. Basic Qualifications (Required Skills and Minimum Experience) Minimum 8+ years of overall software application development experience. Minimum 6+ years of hands-on Core Java development experience, including Java 8+ features, collections, concurrency/multithreading, exception handling, JVM fundamentals, and object-oriented design. Minimum 4+ years of hands-on UI/front-end development experience using React.js and/or Angular with JavaScript/TypeScript, HTML5, and CSS3. Minimum 4+ years of experience developing enterprise backend services using Spring, Spring Boot, RESTful APIs, and microservices. Minimum 3+ years of experience integrating front-end applications with REST APIs and distributed backend services. Minimum 3+ years of experience with relational databases and SQL; experience with ORM frameworks such as Hibernate/JPA. Minimum 3+ years of experience with Git-based source control, CI/CD pipelines, automated builds, unit testing, and code-quality practices. Strong understanding of application security, authentication/authorization, secure coding practices, and production-grade error handling. Demonstrated experience with performance optimization, debugging, root-cause analysis, and production support for enterprise applications. Experience working in Agile/Scrum teams and collaborating across architecture, engineering, QA, and product functions. Ability and willingness to work on-site 3 days per week in Atlanta, New Jersey, or Dallas (mandatory). Degree Bachelor's degree in Computer Science, Engineering, Information Technology, or a related field; equivalent practical experience may be considered. Nice to Have (But Not a Must) Experience in banking, payments, financial services, or another regulated enterprise environment. Cloud development experience with AWS, Azure, or GCP and container technologies such as Docker and Kubernetes. Experience with messaging/event-driven platforms such as Kafka or similar technologies. Knowledge of UI state-management frameworks, component libraries, accessibility standards, and front-end performance optimization. Experience with observability and monitoring tools and supporting highly available, transaction-intensive applications. Technical leadership, mentoring, or lead-developer experience across distributed onshore/offshore teams. What We're Looking For An expert engineer who can work across the Java backend and modern UI laye