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Seré desarrollador backend en node js para APIs, SaaS e integraciones de IA
Hussnain
5.0
5.0
Acerca de este Servicio
Traducción automática
¿Necesitas un desarrollador de Node.js confiable que entregue código limpio, escalable y a tiempo, siempre?
LO QUE CONSTRUYO:
APIs REST (Node.js, Express, Fastify)
Arquitectura backend para plataformas SaaS y dashboards
Diseño de bases de datos (MongoDB, PostgreSQL, MySQL)
Integraciones con terceros: Stripe, Shopify, Twilio, Slack, OpenAI
Funciones backend con inteligencia artificial e integraciones de agentes
Autenticación, autorización y acceso basado en roles
Configuración y despliegue de CI/CD
¿POR QUÉ TRABAJAR CONMIGO?
- Exlíder técnico: escribo código como lo esperan los equipos senior: limpio, documentado y probado
- Experiencia directa integrando pasarelas de pago, APIs de IA y servicios de terceros en sistemas de producción
- Comunicación clara: siempre sabrás el estado del proyecto, sin tener que perseguir actualizaciones
- Prometo menos de lo que puedo cumplir y entrego antes de lo previsto
Ya sea que necesites una API sencilla construida desde cero, arreglar y optimizar un backend existente, o diseñar un backend completo para SaaS desde cero, lo definiré claramente antes de comenzar para que no haya sorpresas.
Envíame un mensaje con los detalles de tu proyecto; usualmente respondo en unas pocas horas.
Conoce a Hussnain
Hussnain
AI Powered Full Stack Developer React NextJS NodeJS AI Agents and SaaS
- DePakistán
- Miembro desdeabr 2019
- Última entrega2 años
Idiomas
Inglés
I'm Hussnain, Senior Full-Stack & AI Developer with 7+ years building web and mobile SaaS platforms, AI-integrated apps, and scalable APIs using React, Next.js, Node.js, TypeScript, and Flutter.
Led full-stack dev as Technical Lead for SaaS platforms (2020-2025) architecting AI features, gateway integrations, custom NPM packages (top 3% skill).
I build:
• AI agents & automation
• SaaS dashboards, mobile apps
• REST APIs
• MongoDB/PostgreSQL
• third-party API integrations (Stripe, Shopify, Twilio)
• CI/CD
• 135+ projects, 121 five-star reviews. Fast delivery, clean code, clear communication
Traducción automática
Mi porfolio
FAQ
Traducción automática
¿Trabajas con una base de código existente o solo en proyectos nuevos?
Ambos. Envíame tu repo/código y lo revisaré antes de dar un presupuesto, sin costo por la revisión inicial.
¿Puedes integrar APIs de IA como OpenAI o Claude en mi backend?
Sí, esto forma parte de mi paquete Premium y es un área de enfoque en crecimiento para mí.
¿Qué información necesitas para empezar?
Una breve descripción de lo que estás construyendo, tu pila tecnológica preferida (si tienes alguna) y acceso a cualquier código o repo existente.
¿Ofreces mantenimiento continuo después de la entrega?
Sí, disponible como una oferta personalizada, envíame un mensaje para discutir.
Reseñas
55 comentarios sobre este Servicio
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Desglose de calificaciones
- Nivel de comunicación del Freelancer
- Recomendar a un amigo
- Servicio según lo descrito
Ordenar por
Más relevante
Q 
qasimdsp1122
Pakistán
Amazing developer! Really goes the extra mile for us and ensures we are delighted with the work. We ran into a few unexpected roadblocks on this project, but they were solved without much trouble or discussion. I can't say enough positive things. Highly recommended!
USD 50
$
E 
Respuesta del Freelancer
Útil?D deboerappdev
Estados Unidos
Colaboración continuaVery good experience. On this project, part of it was deciphering another developers work so we had to work closely to navigate the labyrinth of someone else's decisions. We were able to successfully retrieve and re-organize some important data that was stored and organized in a complex and unusual way....
USD 1,000-USD 2,500
$
E Respuesta del Freelancer
Útil?D deboerappdev
Estados Unidos
Colaboración continuaVery good! This was a successful collaboration as it always is. In this project we had a few extra things that came up during development and the developer was able to take care of them as they came up. We did our QA testing on the new project and found no bugs at all! Good communication! Thorough testing!
USD 1,000-USD 2,500
$
E Respuesta del Freelancer
Útil?D deboerappdev
Estados Unidos
Colaboración continuaThis was a really great experience. The developer took care of everything quickly and expertly. We even had one thing come up during development that did not occur to us originally. The developer took care of this for us too. A+ Communication and Collaboration skills, it makes it easy to discuss the work the specifics of the job. Perfect work!
USD 800-USD 1,000
$
E Respuesta del Freelancer
Útil?D deboerappdev
Estados Unidos
Colaboración continuaGreat full-stack developer. Fast, efficient and clean coding. Very good about answering questions and finding the most effective way to get the job done. Great communication skills!
USD 1,000-USD 2,500
$
E Respuesta del Freelancer
Útil?
Reseñas
55 comentarios sobre este Servicio
| (55) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Desglose de calificaciones
- Nivel de comunicación del Freelancer
- Recomendar a un amigo
- Servicio según lo descrito
Ordenar por
Más relevante
Q qasimdsp1122
Pakistán
Amazing developer! Really goes the extra mile for us and ensures we are delighted with the work. We ran into a few unexpected roadblocks on this project, but they were solved without much trouble or discussion. I can't say enough positive things. Highly recommended!
USD 50
$
E Respuesta del Freelancer
Útil?D deboerappdev
Estados Unidos
Colaboración continuaVery good experience. On this project, part of it was deciphering another developers work so we had to work closely to navigate the labyrinth of someone else's decisions. We were able to successfully retrieve and re-organize some important data that was stored and organized in a complex and unusual way....
USD 1,000-USD 2,500
$
E Respuesta del Freelancer
Útil?D deboerappdev
Estados Unidos
Colaboración continuaVery good! This was a successful collaboration as it always is. In this project we had a few extra things that came up during development and the developer was able to take care of them as they came up. We did our QA testing on the new project and found no bugs at all! Good communication! Thorough testing!
USD 1,000-USD 2,500
$
E Respuesta del Freelancer
Útil?D deboerappdev
Estados Unidos
Colaboración continuaThis was a really great experience. The developer took care of everything quickly and expertly. We even had one thing come up during development that did not occur to us originally. The developer took care of this for us too. A+ Communication and Collaboration skills, it makes it easy to discuss the work the specifics of the job. Perfect work!
USD 800-USD 1,000
$
E Respuesta del Freelancer
Útil?D deboerappdev
Estados Unidos
Colaboración continuaGreat full-stack developer. Fast, efficient and clean coding. Very good about answering questions and finding the most effective way to get the job done. Great communication skills!
USD 1,000-USD 2,500
$
E Respuesta del Freelancer
Útil?
