I’m Amr Mohamed — a Senior Backend Engineer with 5+ years of experience building and scaling production-grade systems across fintech, healthcare, edtech, and SaaS.

Although I began my academic journey in Dentistry, I transitioned into software engineering in 2017 and have since specialized in backend architecture, performance optimization, and cloud infrastructure.

I focus on designing systems that are:

• Scalable
• Maintainable
• Observable
• Cost-efficient
• Aligned with business impact

I don’t just build features — I design systems meant to last.

• Node.js
• NestJS
• TypeScript
• RESTful APIs
• Modular Monolith Architecture
• Microservices
• Domain-Driven Design
• Clean Architecture (SOLID principles)

• PostgreSQL (advanced indexing, query optimization)
• MongoDB
• Redis (caching & real-time performance)
• Database schema design for analytics-heavy systems
• Performance tuning & bottleneck identification

• AWS Certified Solutions Architect – Associate (SAA-C03)
• EC2, RDS, S3, IAM, VPC
• CloudWatch & system observability
• Docker (multi-stage production builds)
• CI/CD pipelines
• Nginx reverse proxy configuration
• Infrastructure-aware backend design

Founder & Backend Architect

• Designed scalable backend using NestJS & PostgreSQL
• Implemented role-based access control (RBAC)
• Architected appointment scheduling & patient record systems
• Applied repository pattern with clean architecture
• Optimized database queries for reporting & analytics
• Containerized backend using Docker for production deployment
• Designed system with future scalability in mind

• Developed high-performance WooCommerce payment plugins
• Reduced operational SMS costs by 25% via URL shortener system
• Maintained stable production plugins used by merchants
• Improved API reliability and documentation clarity
• Ensured backward compatibility with platform updates

• Built patient management systems with secure workflows
• Designed payment integrations and access control logic
• Optimized heavy database queries & cron jobs
• Reduced downtime and improved system performance

• Design for scalability from day one
• Measure before optimizing
• Prefer simplicity over unnecessary abstraction
• Maintain clean boundaries between domains
• Align technical decisions with business outcomes

• AWS Certified Solutions Architect – Associate (SAA-C03)
• Advanced certifications in:
  • System Design
  • Node.js & TypeScript
  • Clean Code & Architecture
  • SQL & MongoDB

• 🌐 Website: https://amrmuhmedd.com
• 💼 LinkedIn: https://linkedin.com/in/amrmuhamedd
• 📧 Email: amrmuhmedd@gmail.com

Building backend systems that scale with confidence.