Public Service Career
Municipal Government
- Councilor, Municipality of Taguig (1992–1995).
- Vice Mayor, Municipality of Taguig (1995–1998).
House of Representatives
- Representative, Lone District of Taguig–Pateros (1998–2007; 2019–2022).
- Assistant Majority Leader (1998–2001).
- Deputy Majority Leader (2001–2004).
- Senior Deputy Minority Leader (2004–2007).
- Speaker of the House of Representatives (2019–2020).
- Principal author of Republic Act No. 11641 (Department of Migrant Workers Act).
- Principal author of Republic Act No. 11469 (Bayanihan to Heal as One Act) and Republic Act No. 11494 (Bayanihan to Recover as One Act).
Senate of the Philippines
- Senator (2007–2010; 2010–2016; 2016–2017; 2022–present).
- Senate Minority Floor Leader (2010–2013).
- Senate Majority Floor Leader (2013–2016).
- Chairperson of various committees, including Rules, Foreign Relations, Agrarian Reform, Science and Technology, Higher, Technical and Vocational Education, Trade and Commerce, and Accounts.
- Author or co-author of, among others:
- Republic Act No. 10088 (Anti-Camcording Act of 2010);
- Republic Act No. 9500 (University of the Philippines Charter of 2008);
- Republic Act No. 10645 (Expanded Senior Citizens Act);
- Republic Act No. 10676 (Student-Athletes Protection Act);
- Republic Act No. 10863 (Customs Modernization and Tariff Act);
- Republic Act No. 11939 (Strengthening Professionalism in the Armed Forces of the Philippines); and
- Republic Act No. 11959 (Regional Specialty Centers Act).
Executive Branch
- Secretary of Foreign Affairs (2017–2018).
Other Roles
- Chairperson, Organizing Committee, 30th Southeast Asian Games (2019).
- Member, Judicial and Bar Council (2001–2003).
- Member of the Boards of Regents and Trustees of various educational institutions by virtue of Senate positions.
Source: Senate of the Philippines, https://web.senate.gov.ph/senators/sen_bio/cayetano_alanpeter_bio.asp