High-Performance Telegram Channel Watcher (MP4 Download) Overview I am looking for an experienced developer to build a high-performance Telegram channel monitoring system with very low latency. The system must: Monitor specific Telegram channels in real time Detect new messages instantly When a message contains an MP4 video, start downloading the video immediately Minimize end-to-end latency between message arrival and video download start This project is performance-critical. Speed and reliability matter more than the specific technology used. Core Requirements The system must: Listen to one or more Telegram channels React only to new messages (no history scanning) Detect messages containing: MP4 videos (video/document) Begin downloading the MP4 file as soon as the message is received Avoid unnecessary delays such as: Polling with long intervals Artificial sleeps Batch-based processing Performance Expectations Message detection should be near real-time MP4 download should start immediately after message arrival The solution must demonstrate measurable low latency Technical Approach You may propose any suitable architecture, including: Telegram TDLib (C++, Rust, Go, or bindings) Python (async, optimized pipelines) Node.js Browser-based approaches (Playwright, Web Telegram, etc.) If using a browser-based solution, you must clearly explain: How latency is minimized Why it can reliably meet real-time requirements Technology choice is flexible, performance is not. Functional Scope (Phase 1) Initial scope: Authentication & session handling Real-time channel monitoring MP4 detection MP4 download to disk Logging of: Message timestamp Download start time Download completion time Later phases may include: Frame extraction OCR Post-processing Socket or API forwarding Deliverables Working source code Clear build/run instructions Configuration for: API credentials Channel IDs Output paths Production-ready code with reasonable documentation Required Experience Telegram APIs or Telegram automation experience Low-latency or real-time systems Handling media downloads at scale Linux server deployment How to Apply Please include in your proposal: Your proposed technical approach Why it meets the latency requirements Relevant past projects Estimated timeline Generic proposals without technical details will be ignored. Final Not I am specifically looking for a fast and reliable solution. If you can achieve very low latency with a non-traditional or browser-based approach, that is acceptable—as long as performance requirements are met.