Ambassador Capunay was born in 1948 and is an economic graduate from the National University of San Marcos, Peru. He has received official decorations from Japan, Korea and Chile.

His professional career is as follows:

• 2008: Executive Director, Asia-Pacific Economic Cooperation Secretariat
• 2007: Deputy Executive Director, Asia-Pacific Economic Cooperation Secretariat
• 2003–2007: Ambassador, Director General of APEC Division, Senior Official of Peru in APEC Under Secretariat for Asia and Pacific Basin Affairs
• 1998–2003: Ambassador of Peru to Singapore, and concurrent Ambassador of Peru to Brunei
• 1997–1998: Minister, Charge D'Affaires of Peru to Singapore
• 1994-1997: Minister of the Embassy of Peru to The People's Republic of China
• 1991–1994: Minister of the Embassy of Peru to Japan and Alternate Representative to the International Organization for Tropical Woods
• 1986–1991: Minister Counsellor, Alternate Representative of Peru to the Organization of American States
• 1983–1986: Counsellor of the Permanent Mission of Peru to the Organization of American States
• 1982–1983: First Secretary of the Permanent Mission of Peru to the Organization of American States
• 1979–1982: First Secretary of the Permanent Mission of Peru to the United Nations
• 1976–1979: Second Secretary of the Permanent Mission of Peru to the United Nations
• 1976: Second Secretary of the Embassy of Peru to Japan
• 1973–1976: Third Secretary of the Embassy of Peru to Japan
• 1972: Joined the Ministry of Foreign Affairs of Peru