1. Biodiversity for Food and Agriculture, Bioversity International, Kampala, Uganda
2. Global Maize Program, International Maize and Wheat Improvement Centre (CIMMYT), Nairobi, Kenya
3. Probabilidad y Estadistica, Centro de Investigación en Matemáticas (CIMAT), Guanajuato, Mexico
4. Biometrics and Statistics Unit, International Maize and Wheat Improvement Center (CIMMYT), Texcoco, Mexico
5. Freelance Software Developer, Harare, Zimbabwe