Full Stack developer to evaluate and do a cost analysis

Looking for an expert to evaluate and do a cost analysis to build a Web Platform
Define the timeline, schedule for each feature and function

Detail timeline for each feature and function .. (hours/days/weeks for each feature and function)
Ways to manage progress and delivery time
Milestone Sheet of the project, Product management Workflow & scheduling
Set up Trello or Jira: Storyboard/ticketing / Milestone, Sprint
Define the first steps necessary to start and finish the platform
Maintain proper timeline and schedule
Define the Back End Architecture

Project cost estimation and roadmap for building the platform
Build a proper roadmap, a milestone for the developer to follow to build this platform
Cost analysis and roadmap
Defined, explained, illustrated, and clarified

Tech stack would be :::
Software/Technology / Platform
Node / Nextgs / Nestgs / React / PWA Approach
MongoDB / Fireside
Agile methodology