In 2021, Marcel Gelauff announced his retirement from his role as editor-in-chief of NOS Nieuws. His departure marked the end of a significant era for NOS, where he had been instrumental in steering the newsroom through numerous challenges and innovations.

In 2018, Marcel Gelauff and his team at NOS Nieuws were awarded the prestigious De Tegel award for their outstanding journalism. The award recognized their exceptional reporting and contribution to Dutch media, further cementing Gelauff's status as a leading figure in journalism.

Marcel Gelauff played a crucial role in leading NOS's coverage of the MH17 disaster in 2015. His editorial guidance ensured that NOS provided comprehensive and sensitive reporting on the tragedy, which was widely recognized for its depth and accuracy.

Marcel Gelauff was promoted to editor-in-chief of NOS Nieuws in 2013. Under his leadership, NOS Nieuws focused on enhancing its digital presence and maintaining high standards of journalism, making it a leading news source in the Netherlands.

In 2011, Marcel Gelauff joined NOS, the Dutch public broadcasting organization, as the deputy editor-in-chief of NOS Nieuws. His responsibilities included managing the newsroom and ensuring the quality and integrity of news reporting.

Marcel Gelauff was appointed editor-in-chief at GPD in 2005. In this leadership role, he was responsible for guiding the editorial team and setting the strategic direction of the agency's news coverage, solidifying his influence in Dutch journalism.

In 1995, Marcel Gelauff joined the Geassocieerde Pers Diensten (GPD), a Dutch news agency, as an editor. His role involved overseeing news content and ensuring the quality of reporting, which significantly contributed to his reputation as a meticulous journalist.

Marcel Gelauff began his journalism career at Leidsch Dagblad, a regional newspaper in the Netherlands. During his tenure, he honed his skills in local news reporting, covering a variety of topics that laid the foundation for his future in journalism.