Jaap Frederiks studied Contemporary History at the University of Utrecht and subsequently joined the Ministry of Foreign Affairs in 1985. He was posted in Tehran, Bangkok, was seconded to the European Commission in Brussels, the Permanent Representation of the Netherlands to the United Nations at Geneva, and held several positions at the Ministry of Foreign Affairs in The Hague.
In August 2013 Jaap Frederiks was appointed Netherlands ambassador in Tanzania. Prior to his posting in Tanzania his assignments included Head of the Environmental and Energy Policy Division at the Ministry of Foreign Affairs in The Hague (1999-2005) and Deputy Head of Mission at the Royal Netherlands Embassy in Vienna (2005-2009). He assumed his duties as Consul-General of the Kingdom of the Netherlands in Sydney in August 2009.
He is married to Homeyra; they have two children, Daniel (19) and Hannah (15).
In April 2015, Jaap Frederiks wrote an in-dept article for a Dutch publication called "Globe Magazine voor Internationaal Ondernemen" about the Tanzanian economy, the business opportunities for Dutch companies in the country, and the role played by the Embassy. A link to the Dutch article, "Tanzania: een land in ontwikkeling", can be found to the right.