Residential segregation has been the subject of academic debate between the theory of professionalization, which posits a reduction in inequalities, and the theory of polarization, which posits their intensification. Nonetheless, empirical studies are often marred by significant methodological biases, including reliance on static analyses, no differentiation between workers and residents or limited consideration of territorial specificities. This article aims to go beyond this debate by employing an innovative methodological framework based on dynamic analyses, a robust set of statistical indicators, and cartographic modelling. Additionally, while existing theories have predominantly been developed in the context of North American metropolitan areas, this research examines a European metropolis—Paris—as a case study to identify a new determinant of residential segregation: the pursuit of residential proximity to workplaces. The findings demonstrate that jobs and more specifically office jobs are becoming increasingly unequally distributed within the metropolitan area between 2006 and 2021. These disparities mainly exist between private-sector executives and other categories. In their quest to recruit skilled workers, who are in shorter supply than before, private companies are rushing to the main centrality. Conversely, companies that depend on less-skilled workers have no recruitment issues and move to the periphery to lower real estate costs. This has significant implications for residents who follow their job: unlike unskilled workers, the skilled ones are encouraged to live near the main centrality, with a large array of services and an easy access by public transport. In this regard, companies play a role in shaping socio-spatial disparities among urban residents.