After several years abroad, Sjoerd Mouissie returned to the Netherlands to take on the role of Senior Editor at De Telegraaf. In this capacity, he oversees major investigative projects and continues to contribute to the newspaper's reputation for hard-hitting journalism.

During the COVID-19 pandemic, Sjoerd Mouissie provided extensive coverage from the United States, focusing on the impact of the virus on American society and politics. His reports highlighted the challenges faced by the US government and healthcare system during the crisis.

Sjoerd Mouissie was appointed as a foreign correspondent for De Telegraaf in Washington D.C., USA. In this role, he covered major political events and developments in the United States, providing Dutch audiences with insightful analysis and firsthand reports from the American capital.

In 2017, Sjoerd Mouissie published a book detailing the intricacies of the Dutch political landscape. The book was well-received for its in-depth analysis and insider perspectives, further establishing Mouissie as an authoritative voice on political matters in the Netherlands.

Sjoerd Mouissie was awarded the prestigious De Tegel award for his outstanding investigative journalism. His work on exposing corruption within the government was recognized as a significant contribution to Dutch journalism, highlighting his dedication to uncovering the truth.

In 2013, Sjoerd Mouissie broke a significant political scandal involving high-ranking officials in the Dutch government. His investigative work uncovered corruption and misuse of public funds, leading to widespread public outcry and political repercussions.

Sjoerd Mouissie began his career at De Telegraaf, one of the leading newspapers in the Netherlands, known for its wide reach and influence. His early work focused on domestic news, where he quickly established himself as a diligent and insightful reporter.