Ibrahim Diallo got his first computer when he was five, which triggered a lifelong passion for programming. He has worked as a software engineer in the US for 12 years. A Guinean citizen, who went to French school in Saudi Arabia, and now lives in California, Ibrahim says he can count on one hand the number of black people he has worked alongside. He shares his experience of being a black programmer in the US with Vivienne Nunis. (Photo: Ibrahim Diallo at his office in LA. Credit: BBC)