Contact person: Backend Redesign: Firebase to Express.js+MongoDB & S3

Phone:Show

Email:Show

Location: New Delhi, India

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"Title: Backend Migration from Firebase to [login to view URL] + MongoDB with S3 (Lula User App, Streamer App & Admin Panel)

Description:
We are looking for an experienced backend developer to migrate our backend from Firebase to a custom backend using [login to view URL] + MongoDB, while continuing to use Amazon S3 for storage. The migration must integrate seamlessly with our Lula User App, Streamer App, and Admin Panel.

About Lula Apps:

User App: End-users can purchase coins, use them to start video/audio calls with streamers, and their coins are deducted per minute.

Streamer App: Streamers receive calls from users. For every minute they talk, they earn commissions based on deducted user coins. Earnings are tracked in real-time.

Admin Panel: The admin can monitor calls, manage users and streamers, track coin transactions, and set commission percentages.

Scope of Work:

Migrate backend from Firebase to [login to view URL] + MongoDB.

Set up and optimize Amazon S3 for storage (photos, videos).

Ensure smooth integration of calling functionality (currently works with coins deducted per minute from the user balance).

Maintain real-time transaction logic:

Deduct user coins per minute of call.

Streamer earns commission for every minute.

Admin panel reflects balances and reports accurately.

Optimize APIs for scalability, security, and performance.

Provide complete testing to avoid downtime.

Requirements:

Expertise in Node.js, [login to view URL], MongoDB.

Prior experience with Firebase migration projects.

Knowledge of real-time call systems (e.g., Agora, GetStream, WebRTC, or similar).

Proven ability to work with virtual currency / wallet logic.

Amazon S3 integration experience.

Budget: $250 (fixed)
Timeline: 5 Days (strict, no extensions)
Incentive: $25 bonus if the migration is 100% completed and delivered within 5 days.

Deliverables:

Fully functional backend with [login to view URL] + MongoDB + S3.

Seamless functioning of User App, Streamer App, and Admin Panel with real-time coin/commission logic.

Deployment on our server and handover of code.

Documentation of APIs and migration process." (client-provided description)