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Ali Asif
Fullstack-developer
Backend Development
I will build secure backend and REST APIs using Node.js, Express and FastAPI
PROJECT DETAILS
Project Description
Need a fast, secure and scalable backend for your web or mobile app? I am a Full Stack Software Engineer with over 4 years of professional experience building production ready backends and REST APIs for startups and businesses. I build with Node.js, Express, FastAPI and TypeScript, and I handle everything from API design and database modeling to testing, documentation and deployment.
What I can build for you
Custom REST APIs with clean, versioned endpoints, validation and proper error handling
Secure authentication with JWT, OAuth, social logins and role based access control
Database design and optimization with PostgreSQL, MongoDB and Firebase
Third party integrations such as payment gateways, email services, webhooks and external APIs
Real time features using WebSockets for chat, live updates and notifications
AI powered endpoints using OpenAI, GPT 4o, Claude and AI agents
Backends for SaaS platforms, marketplaces, dashboards and mobile apps
Bug fixing, refactoring and performance tuning for existing APIs
What you get
Clean, well structured and documented code
Full API documentation with Swagger or a Postman collection
Automated tests for key endpoints
Docker setup and deployment to your server or cloud platform
Support after delivery to make sure everything runs smoothly
Recent work
Tasky, an AI powered services marketplace with a Node.js backend featuring authentication, real time updates and a company onboarding workflow.
AI Surveillance System, a FastAPI backend powering a real time safety monitoring dashboard that processes live video for helmet compliance, line crossing and inspection alerts.
Tech stack
JavaScript, TypeScript, Python, SQL, Node.js, Express.js, FastAPI, PostgreSQL, MongoDB, Firebase, Redis, Docker, Git, CI CD pipelines, OpenAI API, Anthropic Claude
How it works
Share your requirements and I will review them, suggest the best approach and confirm the timeline. Once we agree, I will design the endpoints and data model, build and test the API, and keep you updated at every stage until it is live.
Send me a message before ordering so we can discuss your project and make sure I deliver exactly what you need.
What I can build for you
Custom REST APIs with clean, versioned endpoints, validation and proper error handling
Secure authentication with JWT, OAuth, social logins and role based access control
Database design and optimization with PostgreSQL, MongoDB and Firebase
Third party integrations such as payment gateways, email services, webhooks and external APIs
Real time features using WebSockets for chat, live updates and notifications
AI powered endpoints using OpenAI, GPT 4o, Claude and AI agents
Backends for SaaS platforms, marketplaces, dashboards and mobile apps
Bug fixing, refactoring and performance tuning for existing APIs
What you get
Clean, well structured and documented code
Full API documentation with Swagger or a Postman collection
Automated tests for key endpoints
Docker setup and deployment to your server or cloud platform
Support after delivery to make sure everything runs smoothly
Recent work
Tasky, an AI powered services marketplace with a Node.js backend featuring authentication, real time updates and a company onboarding workflow.
AI Surveillance System, a FastAPI backend powering a real time safety monitoring dashboard that processes live video for helmet compliance, line crossing and inspection alerts.
Tech stack
JavaScript, TypeScript, Python, SQL, Node.js, Express.js, FastAPI, PostgreSQL, MongoDB, Firebase, Redis, Docker, Git, CI CD pipelines, OpenAI API, Anthropic Claude
How it works
Share your requirements and I will review them, suggest the best approach and confirm the timeline. Once we agree, I will design the endpoints and data model, build and test the API, and keep you updated at every stage until it is live.
Send me a message before ordering so we can discuss your project and make sure I deliver exactly what you need.