I have a first-cut web app where the frontend is ready and the backend only covers authentication. I now need a Russian- or Ukrainian-speaking full-stack engineer (2+ years’ experience) to connect the two and ship a working minimum version. The immediate focus is lightweight: • Design and add the REST endpoints missing from Version 1 (user, product, and transaction data only). • Produce a concise, easy-to-read API document that makes every call—new and existing—crystal-clear. • Wire the frontend to the new endpoints so the site is fully functional. • Plug in WebSocket support for the chat widget (emoji, file transfer, voice mail already stubbed in the UI). I’m leaning toward Python on the backend, so please be comfortable with Flask, Django, or FastAPI and bring a keen eye for clean, modern UI/UX in case minor frontend tweaks are needed. If you can jump in quickly, speak Russian or Ukrainian fluently, and deliver this basic but solid integration, let’s talk.