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Hello! We are looking for an experienced Backend / VoIP Developer to build a lightweight, custom integration script (bridge) between an Oracle OPERA PMS and an Asterisk-based IPBX (Zycoo). Project Scope: Listen to incoming TCP socket messages sent by Oracle OPERA using the FIAS protocol. Parse specific FIAS events (GI for Check-In and GO for Check-Out). Extract the room extension number and guest name (RN and G# fields). Trigger an Asterisk Manager Interface (AMI) command (or API call) to dynamically set/update the Caller ID (Guest Name) on the extension during Check-In, and reset it during Check-Out. Requirements & Qualifications: Proven experience working with Sockets (TCP/IP) and string parsing (Python, Node.js, Go, or C#). Strong experience with Asterisk AMI (Asterisk Manager Interface). Prior experience with Oracle OPERA FIAS protocol is highly preferred. Ability to provide clean code, documentation, and assist with remote testing via AnyDesk. Project Duration: Short-term (Estimated 1 to 3 days of work).