A CFEngine developer designs and implements infrastructure automation and configuration management solutions. They use CFEngine software to automate large-scale, complex, and mission-critical IT infrastructures. Their responsibilities include writing and maintaining CFEngine code, ensuring system consistency, reliability, and scalability. They also troubleshoot and resolve configuration issues, manage system updates, and ensure system security compliance. Additionally, they collaborate with other IT professionals to integrate and optimize CFEngine capabilities, contribute to infrastructure design decisions, and stay updated with the latest trends and advancements in configuration management technologies. Their ultimate goal is to enhance operational efficiency and system reliability.