Full Stack Productivity App Development

I need a full stack developer to create a productivity tool that primarily focuses on task management and file sharing. The app should be developed for the web platform. Additionally, I require integration with LLM and a crawler to enhance the app's functionality.

Key Requirements:
- Develop a web-based productivity tool.
- Implement task management and file sharing features.
- Integrate LLM and crawler for advanced capabilities.

Technical Requirements
Frontend:

React 18 with TypeScript
Modern CSS (Tailwind CSS)
Responsive design implementation
PDF/Excel report generation (jsPDF, XLSX)

Backend:
Node.js with Express.js
TypeScript development
RESTful API design
Database integration and optimization

Database:
PostgreSQL administration
Drizzle ORM proficiency
Schema design and migrations
Query optimization

Core Responsibilities:
Maintain and enhance budget calculation engine
Develop CRM features (leads, deals, contacts, companies)
Build admin dashboard functionalities
Implement web crawling systems for pricing data
Create analytics and reporting features
Ensure responsive, mobile-friendly UI
Database design and performance optimization

Must-Have Skills
3+ years full-stack JavaScript/TypeScript experience
Strong React and Node.js expertise
PostgreSQL and ORM experience
RESTful API development