After her stint as a foreign correspondent, Bergsma returned to De Telegraaf as a senior editor. In this role, she continues to influence the newsroom's direction, focusing on investigative pieces and mentoring upcoming journalists.

Bergsma launched a groundbreaking podcast series focusing on investigative journalism. The series explores various societal issues, offering listeners in-depth analysis and interviews with key figures, further cementing her reputation as a leading investigative journalist.

In 2019, Bergsma took on the role of foreign correspondent in Brussels, Belgium. Her reporting focused on European Union affairs, providing Dutch audiences with critical insights into EU policies and their implications for the Netherlands.

Sietske Bergsma was awarded the prestigious De Tegel award for her outstanding investigative journalism. This accolade recognized her exceptional work in uncovering complex stories and her dedication to journalistic integrity.

Bergsma published a book that delves into the intricacies of Dutch politics, offering readers an in-depth analysis of the political landscape. Her book was well-received and praised for its insightful commentary and thorough research.

In 2012, Sietske Bergsma led a major investigation into healthcare fraud in the Netherlands. Her reporting uncovered significant discrepancies and fraudulent activities within the healthcare system, leading to public outcry and policy discussions.

Sietske Bergsma began her career at De Telegraaf, one of the leading newspapers in the Netherlands. Her work at this major newsroom allowed her to develop her skills in investigative journalism and establish herself as a respected voice in Dutch media.