Nadia D.

I help startups and businesses build scalable backend systems using PHP, Laravel, Symfony, and Java. I specialize in backend development, REST API development, SaaS platforms, CRM/ERP systems, e-commerce solutions, and custom web applications. I build secure, maintainable, and high-performance backend solutions designed to support business growth. My expertise includes: ⚙️ PHP/Laravel/Symfony - custom web applications, SaaS platforms, CRM/ERP systems, e-commerce backends, and complex business logic ☕ Java/Spring Boot - backend services, integrations, microservices, and enterprise-level applications 🔗 REST API Development - secure, well-structured, and documented APIs for web and mobile applications 🗄️ Databases - MySQL, PostgreSQL, Redis, database design, query optimization, and performance improvements 🔐 Security & Authentication - JWT, OAuth2, data validation, secure API design, and OWASP best practices 🚀 Performance Optimization - caching strategies, query tuning, background jobs, and scalable architecture 🔄 Third-party Integrations - payment systems, CRMs, cloud services, and external APIs I follow clean architecture principles, SOLID practices, and write code that is easy to maintain and extend. Why clients choose me: ✅ Clear communication and regular progress updates ✅ Focus on quality, deadlines, and business goals ✅ Ability to work with both new projects and legacy systems ✅ Flexible collaboration: hourly or fixed-price projects Whether you need to build a backend from scratch, improve an existing application, or scale your current system, I can help. Let’s discuss your project.