Full-Stack Developer: AI Productivity Platform

I’m looking for an experienced full-stack developer to help finalize an AI-powered productivity platform. The project already has partial backend work completed, including user authentication and initial chatbot logic. I now need someone who can clean up the structure, finish integrations, and make the system fully functional and reliable.

The focus of this job is functionality, structure, and quality, not flashy design. I want someone who writes clean code, communicates clearly, and delivers on deadlines.

Important: If your proposal sounds like it was written by AI or copied from a template, I will not respond. Write a short, clear message in your own words showing you actually read this post.

What needs to be completed

Backend cleanup and organization (Node.js + PostgreSQL or Supabase)

Secure user authentication and account management

Multi-chat system (users can create, save, and switch between sessions)

Claude and OpenAI integration for chat logic

“Today’s Agenda” feature for users to plan and track daily tasks

SMS and email reminders using Twilio and Nodemailer

Optional fitness tracking tab (log goals and workouts)

Personalized automation for reminders and progress summaries

Connection between backend and web interface (React or Next.js preferred)

Documentation for all routes, tables, and integrations

Requirements

Proficient in Node.js, Express, PostgreSQL (or Supabase)

Strong experience with React or Next.js

Experience with OpenAI or Anthropic APIs

Familiar with Twilio, Nodemailer, and scheduling tools like node-cron

Can communicate daily and deliver clear updates

Writes clean, commented, and maintainable code