A Containerization Developer designs, develops, and deploys software applications using containerization technology like Docker or Kubernetes. They encapsulate applications into containers with their necessary dependencies, ensuring consistency across multiple environments and improving scalability. They also manage orchestration systems for automating application deployment, scaling, and management. Their work includes setting up CI/CD pipelines for continuous integration and deployment, troubleshooting containerized applications, and ensuring security. They work closely with software developers to facilitate the smooth running of applications, reducing the 'it works on my machine' problem, and enhancing the overall software development lifecycle.