We are looking for a highly experienced *Senior Mobile AI Engineer / Full-Stack AI Developer* to build a next-generation AI communication training application. The product is an AI-powered speaking practice platform designed to help users improve communication skills through real speaking exercises, intelligent analysis, scoring, and personalised coaching. This is not a simple mobile application project. The core product involves a complete AI feedback loop: *Audio capture → Speech-to-text → Speech analytics → LLM analysis → Scoring engine → Personalised feedback → Adaptive next exercise* We need someone who understands both mobile application development and AI-powered audio processing workflows. Product Overview The application allows users to answer speaking prompts by recording their voice. The system then analyses the response through two major intelligence layers: 1. Deterministic Speech Analysis Objective measurements such as: * Words per minute * Speaking duration * Response latency * Filler word frequency * Pause detection * Repetition detection * Vocabulary diversity * Target word usage * Speech pacing * Fluency indicators 2. AI Semantic Analysis Understanding the meaning and quality of the response: * Clarity * Structure * Conciseness * Relevance * Audience adaptation * Persuasiveness * Quality of examples * Handling objections * Achievement of the speaking objective…