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Fiverr Pro
Português
$
USD
I will node js backend developer for apis saas and ai integrations
Hussnain
5,0
5,0
Sobre este Serviço
Need a reliable Node.js developer who delivers clean, scalable backend code on time, every time?
WHAT I BUILD:
REST APIs (Node.js, Express, Fastify)
Backend architecture for SaaS platforms & dashboards
Database design (MongoDB, PostgreSQL, MySQL)
Third-party integrations: Stripe, Shopify, Twilio, Slack, OpenAI
AI-powered backend features & agent integrations
Authentication, authorization & role-based access
CI/CD setup & deployment
WHY WORK WITH ME:
- Former Technical Lead I write code the way senior teams expect it: clean, documented, tested
- Direct experience integrating payment gateways, AI APIs, and third-party services into production systems
- Clear communication you'll always know project status, no chasing for updates
- I under-promise on timelines and deliver ahead of schedule
Whether you need a simple API built from scratch, an existing backend fixed and optimized, or a full SaaS backend architected from the ground up, I'll scope it clearly before we start so there are no surprises.
Message me with your project details I usually reply within a few hours.
Conheça mais sobre Hussnain
Hussnain
AI Powered Full Stack Developer React NextJS NodeJS AI Agents and SaaS
- A partir dePaquistão
- Membro desdeabr. de 2019
- Responde em aprox.:1 hora
- Última entrega2 anos
Idiomas
Inglês
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
Meu portfólio
Perguntas frequentes
Do you work with an existing codebase, or only new projects?
Both. Send me your repo/code and I'll review it before quoting, no charge for the initial review.
Can you integrate AI APIs like OpenAI or Claude into my backend?
Yes, this is part of my Premium package and a growing focus area for me.
What information do you need to start?
A brief description of what you're building, your preferred tech stack (if any), and access to any existing code/repo.
Do you offer ongoing maintenance after delivery?
Yes, available as a custom offer, message me to discuss.
Avaliações
55 avaliações deste Serviço
| (55) | ||
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- Recomendar a um amigo
- Serviço conforme a descrição
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Q 
qasimdsp1122
Paquistão
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!
US$ 50
$
E 
Resposta do freelancer
Útil?D deboerappdev
Estados Unidos
Colaboração contínuaVery 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....
US$ 1.000-US$ 2.500
$
E Resposta do freelancer
Útil?D deboerappdev
Estados Unidos
Colaboração contínuaVery 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!
US$ 1.000-US$ 2.500
$
E Resposta do freelancer
Útil?D deboerappdev
Estados Unidos
Colaboração contínuaThis 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!
US$ 800-US$ 1.000
$
E Resposta do freelancer
Útil?D deboerappdev
Estados Unidos
Colaboração contínuaGreat 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!
US$ 1.000-US$ 2.500
$
E Resposta do freelancer
Útil?
Avaliações
55 avaliações deste Serviço
| (55) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Classificação detalhada
- Nível de comunicação do freelancer
- Recomendar a um amigo
- Serviço conforme a descrição
Ordenar por
Mais relevante
Q qasimdsp1122
Paquistão
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!
US$ 50
$
E Resposta do freelancer
Útil?D deboerappdev
Estados Unidos
Colaboração contínuaVery 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....
US$ 1.000-US$ 2.500
$
E Resposta do freelancer
Útil?D deboerappdev
Estados Unidos
Colaboração contínuaVery 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!
US$ 1.000-US$ 2.500
$
E Resposta do freelancer
Útil?D deboerappdev
Estados Unidos
Colaboração contínuaThis 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!
US$ 800-US$ 1.000
$
E Resposta do freelancer
Útil?D deboerappdev
Estados Unidos
Colaboração contínuaGreat 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!
US$ 1.000-US$ 2.500
$
E Resposta do freelancer
Útil?
