 He was re-elected to a seat in parliament in the June 2007 parliamentary election as the ninth name on Fretilin's candidate list.Da Silva studied agronomy at Eduardo Mondlane University, and worked at Marracuene state enterprise as the Chief Agronomist for the Mozambican government.He also attended the International Crops Research Institute for the Semi-Arid Tropics in India for short training courses in agriculture systems for arid and semi arid regions.