HMIer

HMIer is a term used to describe a professional who designs, develops, and optimizes human–machine interfaces (HMIs) used to interact with automated systems. The word is formed from HMI (human–machine interface) and the agent suffix -er, signaling an individual who performs tasks related to HMI.

HMIers work at the intersection of control engineering, software development, and user experience. Their duties typically include gathering user requirements, designing intuitive dashboards, configuring alarms and trends, implementing data visualization, and ensuring reliable operation under real-time constraints. They collaborate with control engineers, plant operators, and software developers to integrate HMIs with PLCs, SCADA systems, and other industrial equipment. They also address safety, accessibility, and maintainability, and may participate in testing, commissioning, and ongoing optimization.

Key skills for an HMIer include knowledge of industrial HMI/SCADA software, scripting or programming for configuration, familiarity with industrial communication protocols (for example Modbus or OPC UA), and a strong sense of UI/UX principles tailored to operator tasks. They should understand plant processes, data historians, and alarm management, as well as troubleshooting and documentation practices.

HMIers are commonly employed in manufacturing, process industries, energy, building automation, and transportation sectors. The role is often described by other titles such as HMI engineer, SCADA UI designer, or control systems engineer; the exact responsibilities vary by organization. The term HMIer is informal and used primarily within professional communities describing this specialty.