Looking for Senior Mobile/Web Developer for Source Code Review + Long-Term Zyvo Support

Looking for Senior Mobile/Web Developer for Source Code Review + Long-Term Zyvo Support We are preparing to launch Zyvo — a modern hourly rental marketplace where users can book spaces for: * photoshoots * podcast studios * meetings * events * creative workspaces * parties * unique hourly experiences The app is currently in final QA/testing stages across: * iOS * Android * Web We are looking for an experienced senior developer who can step in during this transition phase and potentially become our long-term development partner post-launch. Immediate Goal: We need someone to thoroughly review our existing source code and infrastructure to ensure: * the delivered codebase is clean and production-ready * architecture is scalable and maintainable * APIs/services are properly connected * no major shortcuts or hidden technical debt exist * code is understandable and absorbable by a new dev team * the project can be cloned, maintained, and iterated on smoothly after launch This is NOT primarily a QA role. The app has already gone through extensive testing. This is more of: * a technical audit * codebase review * architecture validation * developer handoff review * future scalability assessment Post-launch, we may continue with this person/team for: * feature iterations * performance improvements * bug fixes * infrastructure scaling * UI/UX refinements * new feature development * long-term product evolution Tech stack experience preferred: * React Native / Flutter * Node.js * Firebase / Supabase * APIs & third-party integrations * payment systems * scalable mobile architecture * App Store / Google Play deployment What we need from you: * ability to deeply review an existing codebase * identify risks/issues professionally * provide clear technical feedback/documentation * potentially take over ongoing development after launch * strong communication and startup experience Please send: * portfolio/apps worked on * experience reviewing existing codebases * experience with startup handoffs * preferred stack * hourly/fixed pricing * availability We are looking for someone reliable, sharp, scalable, and capable of becoming a long-term technical partner as Zyvo grows.