I will build a custom web app for automation, dashboards or calculations

I develop custom web applications focused on business logic, automation, and data processing.

This Gig is designed for projects where you need not just a UI, but a working system: APIs, calculations, data pipelines, and production-ready deployment.

What I can build for you:

- Custom APIs (FastAPI / Python)

- Business logic (pricing, calculations, rules, automation)

- Dashboards and web apps (React)

- Data pipelines (Google Sheets, APIs, PostgreSQL)

- Full deployment with Docker

My experience:

I built a logistics calculator that:

- processes multiple factories and tariffs

- calculates delivery cost based on distance, weight, and rules

- returns the top 3 optimal delivery scenarios

I apply the same approach to your project.

Packages explained:

BASIC Backend API & Data Pipeline

- FastAPI backend to process your data

- Integration with Google Sheets or database

- Custom logic and rules

- Docker setup (ready to run)

STANDARD Calculator / Logic Module + UI

- Core calculation engine (pricing, logic, automation)

- Simple React interface to test functionality

- API + backend fully structured

PREMIUM Full Web Application

- Full-stack app (FastAPI + React)

- Dashboard, authenticati