On the following portal you will find jobs in international organizations, such as UNO, WTO, in Missions as well as in NGO’s  : https://www.geneve-int.ch/jobs

Otherwise, you can also check directly on the website of the main international organizations listed below :

In Geneva: 

• United Nations: https://www.ungeneva.org/en/practical-information/careers
• UN Human Rights Office of the High Commissioner : ohchr.org
• UN Agency on International Development : undp.org
• UN Refugee Agency : unhcr.org
• UNICEF: https://www.ungeneva.org/en/organizations/unicef
• WTO: World Trade Organization : wto.org
• ILO: International Labor Organization : ilo.org
• ICRC: International Committee of the Red Cross icrc.org
• IOM: International Organisation for Migrations : https://www.iom.int/
• ITU: International Telecommunications Union: https://www.itu.int/en/Pages/default.aspx
• WIPO: World Intellectual Property Organization: https://www.wipo.int/portal/en/index.html
• WMO: World Meteorological Organization: https://public.wmo.int/en
• IATA: International Air Transportation Association: https://www.iata.org/
• IEC: International Electrotechnical Commission: https://iec.ch/homepage
• EBU: European Broadcasting Union: https://www.ebu.ch/home
• ISO: International Organization for Standardization: https://www.iso.org/home.html
• CERN: European Center for Nuclear Research 
• In Vaud:

• WWF: World Wild Fund for Nature (Gland); https://www.worldwildlife.org/
• IOC: International Olympic Committee (Lausanne): https://olympics.com/ioc
• UEFA: Union of European Football Associations: (Nyon): https://www.uefa.com/
• FIBA: International Basketball Federation (Mies): https://www.fiba.basketball/