API Authorization Backend for Existing App
Budget: ₹1,500 – ₹12,500 INR
**Title:** Backend Developer Needed for Application Integration & Authentication API Setup
**Description:**
We are looking for an experienced backend developer to help us set up a compatible authentication and API backend for an existing application environment.
The project involves studying the current application workflow, understanding the login and server communication process, and building a backend service that can support the required authentication, user validation, session handling, and API responses.
**Main Requirements:**
* Review the application’s current login and API communication flow
* Understand required request/response formats for authentication and basic app operations
* Create a backend API service for user login, validation, session/token handling, and account status checks
* Build required API endpoints based on the application’s expected backend behavior
* Configure database structure for users, accounts, sessions, and access control
* Test the application with the new backend service and resolve compatibility issues
* Provide deployment instructions and technical documentation
**Required Skills:**
* Strong backend development experience
* Experience working with authentication systems, login APIs, session management, and token-based access
* Ability to inspect application traffic and understand API workflows
* Experience with Node.js, Python, PHP, Go, or similar backend technologies
* Experience with databases such as MySQL, PostgreSQL, or MongoDB
* Good debugging and API testing skills using tools like Postman, Fiddler, Burp Suite, Wireshark, or similar
* Clear communication and documentation skills
**Expected Deliverables:**
* Working backend authentication API
* User/account management structure
* Required API endpoints with proper request and response handling
* Session/token handling logic
* Database setup
* Deployment guide
* Basic technical documentation
* Testing support until the application works correctly with the new backend
**Project Type:** Freelance / Contract
**Budget:** Please share your fixed price or hourly rate
**Timeline:** To be discussed based on complexity
**To Apply:**
Please share:
1. Your experience with backend authentication systems
2. Similar API/backend integration projects you have worked on
3. Backend language/framework you prefer
4. Estimated cost and timeline
5. Your availability to start
**Description:**
We are looking for an experienced backend developer to help us set up a compatible authentication and API backend for an existing application environment.
The project involves studying the current application workflow, understanding the login and server communication process, and building a backend service that can support the required authentication, user validation, session handling, and API responses.
**Main Requirements:**
* Review the application’s current login and API communication flow
* Understand required request/response formats for authentication and basic app operations
* Create a backend API service for user login, validation, session/token handling, and account status checks
* Build required API endpoints based on the application’s expected backend behavior
* Configure database structure for users, accounts, sessions, and access control
* Test the application with the new backend service and resolve compatibility issues
* Provide deployment instructions and technical documentation
**Required Skills:**
* Strong backend development experience
* Experience working with authentication systems, login APIs, session management, and token-based access
* Ability to inspect application traffic and understand API workflows
* Experience with Node.js, Python, PHP, Go, or similar backend technologies
* Experience with databases such as MySQL, PostgreSQL, or MongoDB
* Good debugging and API testing skills using tools like Postman, Fiddler, Burp Suite, Wireshark, or similar
* Clear communication and documentation skills
**Expected Deliverables:**
* Working backend authentication API
* User/account management structure
* Required API endpoints with proper request and response handling
* Session/token handling logic
* Database setup
* Deployment guide
* Basic technical documentation
* Testing support until the application works correctly with the new backend
**Project Type:** Freelance / Contract
**Budget:** Please share your fixed price or hourly rate
**Timeline:** To be discussed based on complexity
**To Apply:**
Please share:
1. Your experience with backend authentication systems
2. Similar API/backend integration projects you have worked on
3. Backend language/framework you prefer
4. Estimated cost and timeline
5. Your availability to start