Java Full Stack Developer

Java Full Stack Developer LeadLocation: Tampa, FL 33610 Tax Term: W2 Job Type: Contract Duration: 6 MonthsJob DescriptionYears of experience required: 10+We are seeking a Full-Stack Senior Java Engineer to architect, design, and build scalable, secure, high-performance applications across both the back end and front end using Java, Spring Boot, and React. You'll work in a cross-functional team to deliver resilient microservices, build responsive user interfaces, optimize Oracle database performance, and strengthen engineering excellence through code reviews, mentorship, and automation.Key ResponsibilitiesArchitect, design, and develop scalable, secure, high-performance full-stack applications using Java, Spring Boot, and React.Build and maintain responsive, intuitive front-end interfaces using React, modern JavaScript/TypeScript, HTML, and CSS.Build and maintain microservices-based systems with a strong focus on reliability, resilience, and observability.Design, build, and operate event-driven microservices, including service decomposition, inter-service communication, API contracts, and fault-tolerance patterns (circuit breakers, retries, idempotency).Develop and manage asynchronous, event-streaming pipelines using Kafka, including topic design, partitioning, consumer groups, and exactly-once/at-least-once delivery semantics.Deploy, scale, and manage containerized applications on Kubernetes, including deployments, auto-scaling, and service discovery.Build and run cloud-native workloads on AWS, leveraging services such as EKS, EC2, S3, RDS, Lambda, and CloudWatch.Design and optimize Oracle database schemas, SQL queries, and PL/SQL stored procedures; perform performance tuning.Collaborate with Product, QA, DevOps, and UX partners to deliver end-to-end solutions.Participate in code reviews, mentor junior developers, and promote engineering best practices and coding standards.Troubleshoot production issues, perform root-cause analysis, and drive continuous improvements to system performance and stability.Contribute to CI/CD pipelines and automation to streamline development, testing, and deployment.Required Qualifications (Must Have)10+ years of hands-on experience in full-stack Java development.Expert-level proficiency in Java.Strong experience with Spring Boot and the broader Spring ecosystem.Full-stack engineering experience with React (modern JavaScript/TypeScript, HTML, and CSS).Deep understanding of Microservices Architecture, RESTful APIs, and Distributed Systems.Hands-on experience designing and building Event-Driven Microservices and Distributed Messaging with Kafka.Experience deploying and operating applications on Kubernetes and AWS in production environments.Strong Oracle expertise including SQL, PL/SQL, Schema Design, and Performance Tuning.Solid foundation in Software Engineering Principles, Design Patterns, and Best Practices.Experience with Git and CI/CD tools and workflows.Preferred Qualifications (Nice to Have)Experience in Healthcare Payments domain (Claims Processing, Payment Processing, EDI 835, EDI 837, Remittance, Prior Authorization, Payer-Provider Integrations).Knowledge of AI/ML systems.Proficiency in Python.