Upwork home
Sign up
Project Catalog
DesignDesign
Video & AudioVideo & Audio
Development & ITDevelopment & IT
MarketingMarketing
Writing & TranslationWriting & Translation
MoreMore

You will get I will build a modern CRM for your business using React + Supabase/Convex

John G.Status: Offline
John G.
Preview image

Let a pro handle the details

Buy Web Application Programming services from John, priced and ready to go.
John G.Status: Offline
John G.
Preview image

Let a pro handle the details

Buy Web Application Programming services from John, priced and ready to go.

Project details

Desarrollo un CRM moderno y totalmente adaptado a tu proceso de negocio, en lugar de obligarte a ajustarte a un software genérico. Construyo sistemas personalizados con React y Supabase o Convex que te permiten gestionar clientes, leads, pipeline, tareas y reportes en un solo lugar. El enfoque está en rendimiento, seguridad y escalabilidad, para que tu equipo trabaje mejor y tu operación crezca sin límites.
Programming Languages
PHP, HTML & CSS, JavaScript
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Security
What's included
Service Tiers Starter
$225
Standard
$390
Advanced
$1,000
Delivery Time 2 days 1 day 1 day
Number of Revisions
000
Number of Pages
135
Design Customization
-
-
-
Content Upload
-
-
-
Responsive Design
-
-
-
Source Code
-
-
-

Frequently asked questions

John G.Status: Offline

About John

John G.Status: Offline
I help biz owners scale their operations with AI & automation systems
Hialeah, United States - 5:28 am local time
As a seasoned Full-Stack Developer and CTO with over 8 years of experience, I've architected enterprise-grade solutions for major financial institutions like Bancolombia and led technology transformations at Tin Global Group. My expertise spans the complete automation ecosystem—from building sophisticated n8n workflow templates and AI-driven sales/marketing automations to developing complex cold email systems using Mailcow, AWS SES, and Mautic integration. I specialize in creating scalable business solutions using Python (Django, Flask, FastAPI), React, and modern JavaScript, while maintaining enterprise-grade infrastructure with PostgreSQL, MariaDB, Docker, and Kubernetes. My proven track record includes designing mission-critical banking systems, cloud modernization initiatives with AWS, and custom Odoo ERP implementations with multi-agent WhatsApp integrations and AI-powered payroll/accounting workflows. Whether you need Make.com/Zapier automations, AI voice agents, or complete marketing automation suites, I combine deep technical expertise with strategic business acumen to deliver solutions that directly impact your bottom line. My approach leverages Infrastructure as Code (Terraform), GitOps workflows (ArgoCD), and comprehensive monitoring (Prometheus/Grafana) to ensure your automated systems not only solve current challenges but scale seamlessly with your business growth.

Steps for completing your project

After purchasing the project, send requirements so John can start the project.

Delivery time starts when John receives requirements from you.

John works on your project following the steps below.

Revisions may occur after the delivery date.

Flow analysis

I review your current process, needs, roles, and required modules.

System design

I define the CRM structure (data, permissions and functionalities).

Review the work, release payment, and leave feedback to John.