You will get Full-Stack Feature Addition - Seamlessly Extend Your Existing App
Project details
I specialize in adding features to existing applications without breaking what already works. Whether you need a new dashboard, API endpoints, user authentication, or database functionality, I'll integrate it seamlessly into your current codebase.
What makes this different:
✓ Code review first - I understand your existing structure before adding anything
✓ Git workflow - Changes in separate branches, nothing breaks your live app
✓ Thorough testing - Every feature tested before delivery
✓ Clean documentation - You'll understand what was added and why
✓ Your code style - New code matches your existing patterns
Perfect for:
Startups needing reliable development support
Agencies managing multiple client projects
Business owners with existing apps needing expansion
Development teams needing extra hands
Tech stack: Node.js, Express, Fastify, React, PostgreSQL, REST APIs, JWT authentication
I treat your project seriously and keep you updated every step of the way. Let's extend your app the right way!
What makes this different:
✓ Code review first - I understand your existing structure before adding anything
✓ Git workflow - Changes in separate branches, nothing breaks your live app
✓ Thorough testing - Every feature tested before delivery
✓ Clean documentation - You'll understand what was added and why
✓ Your code style - New code matches your existing patterns
Perfect for:
Startups needing reliable development support
Agencies managing multiple client projects
Business owners with existing apps needing expansion
Development teams needing extra hands
Tech stack: Node.js, Express, Fastify, React, PostgreSQL, REST APIs, JWT authentication
I treat your project seriously and keep you updated every step of the way. Let's extend your app the right way!
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$75
|
Standard
$180
|
Advanced
$360
|
|---|---|---|---|
| Delivery Time | 3 days | 5 days | 10 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 1 | 3 | |
Design Customization | - | ||
Content Upload | - | ||
Responsive Design | |||
Source Code |
About Sadat
Full-Stack Developer | Node.js + React + PostgreSQL | Scalable Web App
Gilgit, Pakistan - 10:45 pm local time
I'm Sadat, a full-stack developer with 3 years of hands-on experience shipping web applications using Node.js, React, and PostgreSQL. I've worked across the full stack, from designing database schemas and building secure REST APIs to crafting responsive frontends that feel smooth on every device.
What I build for you:
Backend:
1. REST APIs with Node.js, Express & Fastify
2. Secure auth systems: JWT, OAuth2
3. PostgreSQL database design, queries & optimization
4. Clean, well-documented, maintainable code
Frontend:
1.React apps with clean UI and smooth UX
2.Fully responsive layouts (mobile + desktop)
3.Seamless API integration
4. Modern HTML5, CSS3, JavaScript
I'm a good fit if you need:
— A new web application built from the ground up
— API development or third-party API integration
— A new feature added to your existing app
— Database setup, restructuring, or performance fixes
— A reliable dev for your startup's early-stage product
How I work:
I write clean code, test with Postman, use Git for version control, and keep you updated throughout the project, no ghosting, no vague updates. You'll always know where things stand.
If your project fits what I do, send me a message with the details. I'll give you an honest assessment and a clear plan before we start.
Steps for completing your project
After purchasing the project, send requirements so Sadat can start the project.
Delivery time starts when Sadat receives requirements from you.
Sadat works on your project following the steps below.
Revisions may occur after the delivery date.
Initial code review & project planning
Review your existing codebase and architecture Clarify requirements and confirm feature scope Provide delivery timeline and ask any questions
Feature development begins
Set up development environment with your codebase Create feature branch for safe development Send daily progress updates