Developed a video conferencing system with separate rooms and user roles. For example, there is an administrator who can grant permission to turn on or off the camera\microphone, send messages. Added the ability to record video of the screen during the conference, with subsequent saving to an AWS S3 bucket. Used WebRtc, Socket Io, Svelte, Strapi technologies. Engaged in mentoring for budding Padawan web developers. Provided them with the necessary advice, helped them complete tasks and develop projects. I developed a service for displaying video streams from CCTV cameras, with a wide enough functionality: receiving a video stream, the ability to take screenshots from the video, record the video and save it to storage. Also added the ability to recognize objects in the video. Subsequently, together with the backend developer (Python), we created a model for recognizing weapons and people in the video, with the possibility of creating a large pool of recognized people. Technologies used: ReactJs, NodeJs, Tensorflow, Web Sockets, AWS S3, PostgreSQL, Docker. Developed and launched a site with a variety of icons for designers, developers and others, which is now in demand. There is a separate admin where you can create collections and styles for icons, upload icons, add CSV required meta information for icons, view statistics, and users. On the site itself, it is possible to search for icons according to categories and styles, to download icons. Configured limits for authorized and unauthorized users. Configured events for google analytics, events for internal statistics. There is authorization through Google, FaceBook, Apple. Technologies used: ReactJs, NextJS, NestJS, AWS S3, MongoDb.