I'm looking for an experienced MQL5 developer to build a local execution EA that receives trade instructions from an external process via file-based IPC. The EA has no HTTP or WebRequest calls of any kind — all communication is handled externally. The scope includes a full range of order types, automatic position management (trailing stop, breakeven, partial close), multiple volume sizing modes, structured error reporting, and compatibility with both netting and hedging account types. The deployment environment is Ubuntu 22.04 with MT5 running under Wine. Experience in this specific environment is a hard requirement — candidates who have only worked on Windows will not be considered. Full technical specification is shared after a short screening conversation. Fixed-price engagement with milestone-based payment. If this environment and approach is familiar to you, I'd like to hear from you.