Java Springboot Developer

Kforce has a client in Minneapolis, MN that is seeking a Java Springboot Developer with strong experience building modern, scalable web applications using Java, Spring Boot, and React. In this role, you'll design and develop end-to-end features-from responsive UI experiences to robust RESTful APIs and backend services-working closely with product, design, QA, and DevOps teams to deliver high-quality solutions. Responsibilities Frontend (React):

• Build and maintain responsive, accessible user interfaces using React (hooks, state management, component architecture)
• Implement reusable UI components and patterns to support consistent design across the application
• Integrate frontend applications with backend services via REST APIs (and GraphQL where applicable)
• Optimize performance (bundle size, rendering efficiency, caching, lazy loading) and ensure cross-browser compatibility

• Develop and maintain backend services using Java and Spring Boot (RESTful services, validation, security)
• Design scalable APIs and service-layer architecture (controller/service/repository patterns)
• Build and manage data persistence using SQL and/or NoSQL databases, including schema design and query tuning
• Implement authentication/authorization (JWT/OAuth2, SSO, role-based access control)

• Write unit and integration tests for frontend and backend; participate in code reviews and contribute to engineering standards
• Collaborate in Agile ceremonies (standups, sprint planning, refinement, retrospectives)
• Troubleshoot production issues, perform root-cause analysis, and implement sustainable fixes
• Contribute to CI/CD pipelines and environments (build, test, deploy automation)
• Document technical designs, API contracts, and support runbooks where needed
• 3+ years of professional software development experience (or equivalent practical experience)
• Strong backend development experience in Java and Spring Boot: REST APIs, dependency injection, Spring MVC, JPA/Hibernate (or similar ORM)
• Familiarity with microservices patterns (where applicable)
• Strong frontend development experience with React: Modern JavaScript/TypeScript, component design, hooks; Experience with at least one state management approach (Redux, Context API, Zustand, etc.)
• Solid understanding of web fundamentals: REST, JSON, security basics, browser behavior
• Experience with databases: SQL (PostgreSQL/MySQL/SQL Server) and/or NoSQL (MongoDB, DynamoDB, etc.)
• Testing experience: Backend: JUnit, Mockito (or similar); Frontend: Jest, React Testing Library (or similar)
• Familiarity with Git-based workflows and code review best practices

• TypeScript-first React experience and component libraries (MUI, Ant, Chakra, Tailwind, etc.)
• Cloud experience: AWS/Azure/GCP, containerization (Docker), orchestration (Kubernetes)
• Messaging/streaming: Kafka, RabbitMQ, SQS/SNS
• Observability: logging/metrics/tracing with tools like Splunk, ELK, Datadog, Prometheus/Grafana
• API documentation and design-first development (OpenAPI/Swagger)
• Experience with domain-driven design (DDD) and clean architecture principles
• Performance tuning experience (profiling, JVM tuning, frontend performance audits)