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ON.energy is building the power infrastructure that makes the AI era possible. As AI demand surges past what the grid and traditional data centers can support, ON.energy provides a new class of power technology proven at gigawatt scale and trusted by the world’s leading cloud and AI companies. Our systems are already deployed across 2.5 GW of hyper-scale campuses, validated by top U.S. national labs, and certified for grid-safe operation by major utilities. With real products in the field, we’re scaling faster than the grid can, transforming power from a bottleneck into a competitive advantage for the companies building the future. ABOUT THE ROLE At ON.energy, the Senior Controls Engineer for HMI/SCADA owns the visual design, layout, and functional behavior of every operator-facing screen across our energy storage and power infrastructure platforms. This is a screen-first role — the primary deliverable is a SCADA interface that operators trust, understand, and can act on instantly. The ideal candidate brings deep, hands-on experience with Ignition and its Perspective module, a sharp eye for information design in high-stakes environments, and the communication skills to gather requirements from field operators and translate them into polished, production-ready screens. KEY RESPONSIBILITIES   Screen Design & Visual Execution   Own the end-to-end design of all Ignition Perspective screens — from concept and wireframe through final implementation and deployment.   Design clear, accurate, and visually consistent layouts for system overviews, single-line diagrams, real-time dashboards, alarm views, trending panels, and reporting screens.   Develop and maintain a unified component library, color system, icon set, and layout grid for all SCADA interfaces across ON.energy projects.   Define and enforce visual and interaction standards so that every screen — regardless of project — looks and behaves like ON.energy product.   Ensure screens are optimized for the full range of operator environments: control room monitors, field tablets, and mobile displays.   Functionality & Operator Experience   Define the functional behavior of each screen: what data is shown, how it updates, what actions operators can take, and how alarms and alerts are surfaced.   Design navigation structures, screen hierarchies, and interaction flows that minimize operator cognitive load during normal and abnormal conditions.   Conduct usability reviews and structured feedback sessions to identify friction, confusion, or gaps in operator workflows.   Continuously improve screens based on operator behavior, alarm frequency data, support tickets, and field observations.   Ensure all screens adhere to human factors best practices and relevant standards for control room design.   Internal & External Customer Communication   Serve as the primary point of contact for all HMI/SCADA screen requirements — gathering inputs from field operators, site managers, project managers, and client stakeholders.   Lead structured requirement-gathering sessions, screen walkthroughs, and design reviews with both internal teams and external clients.   Communicate clearly with controls engineers and developers to ensure screens are built accurately to specification.   Present screen designs, prototypes, and release updates to internal and external clients — collecting feedback and managing change requests.   Produce clear documentation for each screen: layout specs, tag mappings, interaction descriptions, and acceptance criteria.   Train operators and client teams on new screen features and interface changes during commissioning and project handover.   Roadmap & Prioritization   Maintain and prioriti