A CI/CD (Continuous Integration/Continuous Deployment) engineer is responsible for designing, implementing, and maintaining the processes and tools used to build, test, and deploy software. This includes setting up and configuring a CI/CD pipeline, integrating various tools and services, and troubleshooting any issues. Additionally, a CI/CD engineer may also be responsible for monitoring the pipeline and making improvements to increase efficiency and reliability. Overall, the main goal of a CI/CD engineer is to automate and streamline the software development process, allowing for faster and more frequent releases of software.