Prolific

Prolific is a leading research technology platform that facilitates high-quality data collection by connecting researchers with a diverse pool of vetted participants. Founded in London, the company serves thousands of academic and commercial researchers globally, providing tools for behavioral research, market analysis, and the development of artificial intelligence through human-in-the-loop data labeling. In Spain, Prolific has established a significant hub in Barcelona, which serves as a key location for its engineering, product, and operations teams. The company is particularly relevant for international professionals due to its remote-first culture, commitment to transparency, and the wide variety of multilingual roles available, especially within their rapidly expanding AI training and research divisions.