A Java developer designs, builds, and maintains software applications using the Java programming language. They work on all stages of the software development lifecycle, from analyzing user requirements to debugging and testing. ResponsibilitiesDesign and develop applications: Create applications for web, desktop, and mobile devices Write code: Write clean, efficient, and well-documented code Debug and troubleshoot: Identify and fix programming errors Test software: Test completed software and debug as necessary Collaborate with others: Work with cross-functional teams and departments Document code and processes: Write software documentation guides Stay up-to-date: Keep updated on industry developments and Java trends and technologies Skills and knowledgeStrong understanding of object-oriented programming (OOP) principles and patterns Expertise in front-end technologies (such as HTML, CSS, JavaScript, and WebSocket) Back-end skills (including Database management, Java frameworks, version control, APIs, caching, etc.)