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Mark Séjourné is a New York–based multimedia artist and designer working across furniture, lighting, and spatial installation. With a background in visual art and computer science, his practice merges material exploration with systems thinking, drawing connections between digital logic and physical form. Building on his experience as a UX designer, Séjourné has developed a multidisciplinary approach that values clarity, utility, and poetic structure. His furniture and lighting design practice centers on fabrication-driven problem-solving, where craft, technology, and experimentation meet.