He previously served as chief speaker of the North Sulawesi provincial parliament [id] between 2016 and 2019.

[13] During his tenure, he transferred the duties of water distribution in the city from PT Air Manado, a private company, to the fully municipal-owned PDAM.

[14] He cited the fact only 25% of Manado residents had access to piped water, making it one of the least-covered provincial capitals in Indonesia; the other 75% relied on underground pumps and wells.

[15] On 1 January 2022, PT Air Manado was declared to be dissolved and hundreds of employees were laid off.

[16] On 17 January 2022, he inaugurated the first charging station in North Sulawesi and expressed support for the presence of electric vehicles in Manado.

[17][18] In January 2022, during the COVID-19 pandemic, Angouw threatened that recipients of aid from Indonesia's national health insurance, PBI-JK, would have their access removed if they did not get vaccinated.

[22][23][24][25] Ruslan Essa, an imam for Al-Ikhlas Paniki Mosque, cited that the program could disturb religious harmony in the city.