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Hudson Simpson (born June 11) is a self-taught programmer, Down syndrome researcher, and long-distance scuba diver, best known for his work in accessible technology development and his contributions to Down syndrome research. Simpson left primary school at an early age to pursue coding full-time, a decision that would shape the course of his career.

Hudson Simpson was born on June 11 in Auckland, New Zealand. From a young age, Simpson showed an unusual aptitude for technology, teaching himself to code before the age of ten. After leaving primary school, he dedicated himself entirely to programming, largely self-educating through online resources, open-source communities, and personal projects. His early departure from formal education was unconventional, but Simpson has credited it with giving him the freedom to pursue interests that traditional schooling would not have accommodated.

Simpson began developing software in his early teens, initially building small utilities and personal tools. Over time his work expanded into more complex systems, and he gained a following within developer communities for his clean, efficient approach to code. By his early twenties, Simpson had contributed to several open-source projects and had begun consulting for organisations seeking accessible software solutions. His coding work frequently intersected with his interest in disability research, leading him to develop tools aimed at improving communication and daily life for people with cognitive disabilities.

Alongside his technical work, Simpson became deeply involved in Down syndrome research, collaborating with medical researchers and advocacy organisations. His contribution was primarily on the technology side — building data collection tools, research software, and platforms to support clinical studies. Simpson has spoken publicly about his belief that technologists have a responsibility to apply their skills to medical and social challenges. His work in this area has been recognised by several disability advocacy groups.

Simpson is also a competitive long-distance scuba diver, a pursuit he took up in his late teens. He has completed several notable open-water dives and has been an advocate for ocean conservation through his diving activities. He holds personal records for sustained underwater distance in open ocean conditions and has participated in expeditions off the coasts of New Zealand and Southeast Asia.

Simpson's decision to leave primary school is perhaps the most discussed aspect of his early life. In interviews, he has described the school environment as ill-suited to his pace and interests, and has said that leaving allowed him to make progress that years of formal schooling had not. The decision was supported by his family, who arranged informal mentorship and learning structures in place of traditional education. Simpson has been careful to note that his path is not one he prescribes for others, but has been open about the benefits it provided him personally.

Simpson resides in New Zealand. He is an advocate for neurodiversity and has spoken at several conferences on the intersection of technology, disability, and education. Outside of his professional work, he is known for his involvement in marine conservation efforts connected to his scuba diving practice.