ON.energy is hiring an UX/UI Specialist

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. The UX/UI Designer is responsible for the design, prototyping, and front-end development of SCADA products and automation interfaces that ensure a seamless and intuitive experience for operators and engineers managing energy storage systems. This role bridges aesthetic design, user research, and technical front-end implementation, working to transform complex system data and stakeholder feedback into high-performance, responsive, and scalable visual solutions. In US: Hybrid 3 days in office (Houston, TX) In Mexico: Remote Key Responsibilities - Design and maintain SCADA product interfaces and new features based on evolving user needs and technical feedback. Develop static front-end components using specialized industrial software, requiring strong proficiency in HTML, CSS, and modern layout techniques like Flexbox and Grid. - Create, manage, and optimize vector graphics and SVGs for high-performance use within the SCADA environment. - Utilize Adobe Illustrator and Figma to maintain and expand a comprehensive internal Design System, including styles, iconography, typography, and color palettes. - Collaborate with the engineering team to solve logic problems and technical challenges when making product interfaces dynamic and data-driven. - Design for a diverse range of environments, ensuring products are fully responsive and optimized for both Light and Dark modes. - Optimize interfaces for touch-screen HMI devices, ensuring industrial-grade usability and ergonomics in the field. Maintain consistency and an excellent eye for detail across all screens and product modules to ensure a unified user experience. - Design and implement intuitive workflows for complex tasks, such as device settings editing and system configuration. - Facilitate regular feedback sessions with both English and Spanish-speaking users to gather qualitative insights and validate design directions. - Refactor and optimize front-end code to improve system performance, maintainability, and long-term scalability. - Proactively identify future design trends and technical improvements to ensure the product remains at the forefront of the energy storage market. Requirements - Bachelor's degree in Multimedia Design, Graphic Design, Interaction Design, UX/UI Design, or a related field, or equivalent experience. - Strong proficiency in HTML and CSS, with expertise in modern layout techniques (Flexbox, Grid). - Advanced skills in Adobe Illustrator and Figma for vector graphics, design systems, and prototyping. - Experience creating and optimizing SVGs for web and industrial applications. - Proven experience designing user interfaces for industrial, SCADA, or complex data-driven systems. - Strong understanding of responsive design principles and multi-device optimization. - Experience designing for both Light and Dark mode environments. - Knowledge of touch-screen HMI design principles and industrial usability standards. - Ability to collaborate with engineering teams to implement dynamic, data-driven interfaces. - Experience conducting user research and feedback sessions with diverse user groups. - Excellent attention to detail and commitment to visual consistency across products. - Strong problem-solving skills and ability to balance aesthetic design with technical constraints. - Fluency in English; Spanish language skills are a plus for US candidates. - Willingness to travel for user research, commissioning, and stakeholder meetings as needed.