3B NEXUS is a London based company offering SaaS solution that helps online publishers to distribute, manage and monetize multimedia content. When they contacted us they had a legacy system making the content management extremely complicated and time-consuming task. We developed custom web platform and portal using contemporary technologies like Yii2 PHP framework and Bootstrap while retaining the current business structure. For optimized performance and scalability, we developed a modular architecture subdivided into separate applets. Using HTML5 video capabilities, we created an interactive and responsive HD cross-media player optimized for different devices, platforms and internet bandwidth.