technology consultant with extensive mobile app development experience

hiring a Senior Software Architect to oversee the development of a video-centric vacation rental app (iOS/Android) by a third-party vendor. Instead of writing code, the architect will act as the client's technical advocate across three phases: Vendor Selection (vetting proposals and tech stacks), Contract Negotiation (enforcing strict milestones and IP ownership), and Build Oversight (auditing code quality and verifying deliverables before payments are released). The role requires 7+ years of experience in mobile and video streaming architecture, starting as a fixed-fee engagement for selection and transitioning to a monthly retainer for ongoing project management.