Thesis: Since the 1970s, the massive rise in the rates and duration of unemployment has led public authorities to orient their action towards so-called "active" labor market policies. Among these policies, job-search assistance proved to be particularly effective. Additionally, technological changes have significantly altered job searches and hiring practices in recent decades. The use of the internet has become a new norm in the job searching process for both employers and job seekers. The objectives of this thesis are twofold: understand the mechanisms behind the success of job search assistance and determine the role of digital technology in this type of program. It is presented in three chapters. The first chapter shows that a digital support program targeting a rarely studied population in the scientific literature – relatively autonomous job seekers – can increase their chances to find a job. The second chapter explores the role of job counselors. It measures the considerable influence they have on the quantity and the quality of exits to employment, showing that some counselors seem to favor one over the other, particularly through the services they recommend. Finally, in an experiment building upon an online platform, the last chapter simultaneously analyses the reaction of both jobseekers and firms in response to a job search stimulation. It concludes that providing targeted match recommendations increases job finding rates among women and firm hires on indefinite duration contracts.