Rosy Calc
Enhanced and maintained a high-traffic women's health application serving 5M+ users across MENA, implementing social login, in-app community features, and scalable backend services while resolving critical reliability issues.
Ahmed Marey Backend Engineer
Backend Engineer focused on building scalable systems, clean architectures, and reliable production-ready applications.
A place you'll never regret visiting
About Me
Skills and Experience
Skills
0 - 100%
PHP
Backend
Laravel
Backend
Python
Backend
FastAPI
Backend
MySQL
Database
PostgreSQL
Database
MongoDB
Database
HTML
Frontend
CSS
Frontend
JavaScript
Frontend
ReactJS
Frontend
NextJS
Frontend
Deployment
DevOps
Docker
DevOps
Git (GitHub/GitLab)
DevOps
Payment Gateways
Integrations
SMS
Integrations
Integration
Email Services
Integrations
Firebase
Integrations
Redis
Integrations
Work Experience
4 roles
Tara
6th October, Egypt
May 2025 - Present
- Developed and maintained scalable backend systems for high-traffic mobile applications serving millions of users across MENA.
- Built and optimized APIs with a focus on performance, reliability, and secure data handling.
- Worked with product and mobile teams to deliver features and support ongoing platform growth.
Nexus
Remote
May 2024 - Present
- Co-founded and led a development team delivering scalable software solutions across multiple projects.
- Owned project delivery end-to-end, including planning, architecture design, and production release.
- Worked directly with clients to gather requirements and translate them into technical solutions.
- Supervised team execution, task distribution, and code quality standards.
Da'em
Mansoura, Egypt
Jan 2025 - May 2025
- Built and maintained backend systems for multiple production platforms, including marketplaces, e-commerce, CMS, and educational systems.
- Designed and implemented scalable RESTful APIs supporting core functionalities such as payments, user management, and real-time interactions.
- Improved system performance, reliability, and stability across various applications.
- Collaborated with cross-functional teams to deliver features, integrate services, and support continuous platform enhancements.
Fourth Pyramid
Mansoura, Egypt
Jul 2024 - Jan 2025
- Developed and maintained backend systems for business and enterprise applications, including administrative and HR platforms.
- Designed and implemented APIs to support order management workflows, user roles, and operational processes.
- Improved system functionality by resolving database issues and enhancing core features.
- Collaborated with cross-functional teams to deliver solutions, support deployments, and ensure system reliability.
Projects
Selected work
Qudratuh
Designed and developed backend architecture and landing page for a subscription-based mobile app preparing high school students for the Saudi Aptitude Test, including gamification systems (streaks, XP, leaderboards, badges, challenges, final exams) and a full operations admin dashboard.
Nawaya Events
Developed backend APIs for a multi-service platform delivering workshops, product sales, and consultations, with an admin dashboard for workshops, certificates, wallets, refunds, and communications plus multiple third-party integrations and stable deployment operations.
Bekam2day
Built and maintained core backend workflows for a multi-role platform covering users, providers, and admins with role-based access control, real-time provider group chat, and integrations for payments, notifications, and messaging services.
MTExpress
Developed backend services for a shipping ERP that handles orders, settlements, and financial reconciliation, with role-specific workflows for Admin, Operations, Agents, Merchants, and Delegates and operational tracking for delayed and returned orders.
Neo Nerd
Developed backend for a secure LMS for medical students with role-based dashboards for admins, doctors, and assistants, including integrations with Telegram bot, Firebase, and WhatsApp messaging plus production deployment and maintenance.
Services
What I deliver
#1
Backend Architecture
Designing maintainable Laravel backends with clear module boundaries, service layers, and production-ready conventions.
#2
REST API Development
Building robust, secure, and documented APIs for web and mobile clients with consistent validation and response contracts.
#3
Database Optimization
Improving query performance, indexing strategy, eager-loading patterns, and schema evolution for high-traffic applications.
#4
Third-party Integrations
Integrating payment gateways, external APIs, and webhook-based services with reliable retries and monitoring.
#5
Queue & Background Processing
Implementing asynchronous workflows with Laravel queues, job batching, and event-driven processing.
#6
Deployment & DevOps
Deploying and maintaining production applications with proper environments, CI/CD workflows, server configuration, and zero-downtime updates.
Contact