An IBM WebSphere Application Server developer designs, develops, and deploys enterprise-level applications using the IBM WebSphere platform. They create, configure and manage application environments, ensuring optimal performance and security. The developer also troubleshoots issues, performs system updates, and integrates third-party applications. They use Java/ or other programming languages for development and utilize IBM WebSphere's features for application scalability and network deployment. They often work with databases, web services, and may also be involved in system architecture planning, testing, and user training. They need to adhere to best coding practices and comply with organizational IT policies.