
Back end Development for Web and Mobile apps
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About this service
Summary
What's included
Backend API Development
Design and build secure, production-ready REST/GraphQL APIs. Includes database schema design, CRUD endpoints, validation, pagination, filtering, and clean error handling. Delivered with clear API documentation and example requests.
Database Design and Implementation
Create scalable database schemas with migrations, indexing, and query optimization. Includes relational (PostgreSQL/MySQL) or NoSQL (MongoDB) setup, data modeling, and performance tuning for real workloads.
File Upload and Storage Integration
Implement file/image upload flows with secure storage (Supabase Storage/S3), signed URLs, access policies, and metadata tracking. Includes validation (type/size), image processing (resize/compress), and CDN-friendly delivery.
Payment Integration Backend
Build backend services for Stripe/PayPal: checkout sessions, webhooks, subscription billing, invoices, refunds, and entitlement management. Includes webhook verification, idempotency, and audit logging.
Real-time Features and Notifications
Add real-time updates via WebSockets/SSE and notifications via email/SMS/push. Includes event-driven design, retry handling, and templates for transactional messages.
CI/CD and Deployment Setup
Set up automated testing and deployment pipelines (GitHub Actions), environment management, and monitoring. Includes production deployment to AWS/GCP/Vercel/Render, with logging, health checks, and rollback strategy.
Skills and tools
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