You will get Professional SaaS Web Application

Sergio S.Status: Offline
Sergio S.

Let a pro handle the details

Buy Web Application Programming services from Sergio, priced and ready to go.
Sergio S.Status: Offline
Sergio S.

Let a pro handle the details

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

Project details

I excel at developing multi-platform web SaaS platforms, offering solutions tailored to each stage of the project. My proposal is organized into three levels:

Starter (basic MVP): ideal for validating ideas with a functional and responsive SaaS.

Standard (professional SaaS): designed for projects seeking to grow with integrations, managed content, and initial scalability.

Advanced (complete multi-platform SaaS): a robust solution with modern architecture, advanced security, and ready to scale in the cloud.

What sets me apart from other profiles on Upwork is my ability to deliver end-to-end projects: from architectural design and frontend and backend construction to API integration, automation with n8n, LLMs, and cloud services, always with a focus on security, clean code, and maintainability.

Each delivery includes comprehensive testing, clear documentation, and a strategic vision to ensure that your platform not only works today but is ready to grow tomorrow.
Programming Languages
TypeScript
Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, Security
What's included
Service Tiers Starter
$500
Standard
$1,100
Advanced
$2,700
Delivery Time 8 days 15 days 30 days
Number of Revisions
27Unlimited
Number of Pages
3612
Design Customization
-
Content Upload
-
Responsive Design
Source Code
Optional add-ons You can add these on the next page.
Fast Delivery
+$100 - $400
Additional Revision
+$40
Additional Page (+ 1 Day)
+$150
Design Customization (+ 2 Days)
+$200
Content Upload (+ 4 Days)
+$400

Frequently asked questions

Sergio S.Status: Offline

About Sergio

Sergio S.Status: Offline
API dev. Web dev. FullStack. React/node.js/express/postgres/NoSQL
Madrid, Spain - 5:18 am local time
Amplia experiencia en desarrollo Web y gestión de equipos.
Actualmente centrado en Marketing de Performance online,
plataformas de Lead Management, Project Management, Business
Intelligence, Innovación Tecnológica, y cualquier proceso para
integrar las comunicaciones de leads online y offline con el fin de
aumentar los ingresos y cerrar las ventas más rápidamente.

Steps for completing your project

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

Delivery time starts when Sergio receives requirements from you.

Sergio works on your project following the steps below.

Revisions may occur after the delivery date.

Reunión inicial y análisis de requisitos

Definimos juntos objetivos, funcionalidades clave, diseño esperado e integraciones necesarias para que el proyecto empiece con una base clara.

Diseño de estructura y prototipado

Creo wireframes y una arquitectura base que refleje la experiencia del usuario y la escalabilidad de la plataforma SaaS.

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