Backend Lead at WeWise & WiseLead
Led backend engineering for a WhatsApp marketing and lead automation platform built to help businesses manage customer engagement, automate follow ups, and improve lead conversion. The platform was validated with 90+ pilot businesses during development.
Technical Leadership
Owned the backend architecture and technical delivery while guiding frontend development across the engineering team.
Responsibilities included:
Backend architecture and API design
Infrastructure and deployment strategy
CI/CD pipeline implementation
Technical planning and delivery
Cross functional collaboration with frontend engineers
Platform Development
Built the backend powering:
Bulk, scheduled, and media based WhatsApp campaigns
Lead automation workflows
Multi account management
Audience segmentation
CSV import and export
Real time campaign and message tracking
Scalable Backend Systems
Designed the platform for reliability and horizontal scalability using:
Node.js and Express.js
MongoDB for application data
Redis for caching and scaling
Twilio for WhatsApp messaging
Amazon S3 with AES encryption for secure media storage
Socket.io for real time delivery updates
Implemented per account rate limiting and exponential backoff strategies to ensure reliable message delivery while complying with WhatsApp API policies.
Security & Infrastructure
Implemented production ready backend capabilities including:
JWT authentication
Role Based Access Control (RBAC)
Secure media storage
Automated campaign scheduling
Cloud infrastructure and deployment pipelines
Business Impact
According to product results reported by the company:
Helped businesses save 26+ hours per month by reducing time spent on unqualified leads.
Improved lead follow up performance with an average 28% increase in conversion rates.
Technologies
Node.js • Express.js • MongoDB • Redis • Twilio • Socket.io • Amazon S3 • JWT • RBAC • CI/CD • REST APIs