Authentication & Authorization
JWT and RBAC implementation for clear, secure access flows.
JWTRBAC
Backend Developer focused on ASP.NET Core APIs and Application Security
I build secure RESTful APIs.
Using ASP.NET Core, JWT, and RBAC.
Backend Developer with hands-on experience building secure RESTful APIs, designing relational databases, implementing JWT/RBAC, and testing web/API security using Burp Suite.
01 / BACKENDASP.NET Core
02 / APIREST APIs
03 / SECURITYAppSec
Abdallah Ahmad HijaziBackend Developer focused on ASP.NET Core APIs and Application SecurityBackend Developer focused on ASP.NET Core APIs and Application Security
DOSSIER // 01
Selected Projects
Backend and API solutions built with practical, scalable technologies.
Project · Backend Developer—
Pharmacy Management System
A comprehensive Pharmacy Management System built with C# and ASP.NET Core for managing inventory, sales, purchases, users, and reporting workflows. The system was used in a real production environment and handled more than 200 transactions per day.
C#ASP.NET CoreREST APIsSQL ServerWindows FormsEntity Framework
View project ↗Project · Backend Developer—
Project & Task Management System / TaskFlow
A backend-driven system for projects, initiatives, tasks, assignments, priorities, statuses, progress tracking, and AI-assisted planning using Qwen via Ollama.
ASP.NET CoreREST APIsSQL ServerEntity FrameworkJWTRBACOllamaQwen
View project ↗Project · Full-Stack Developer—
Restaurant Ordering & Management System
A full-stack, responsive restaurant management and ordering platform developed independently from frontend to backend, covering QR menus, ordering, kitchen, cashier, delivery, menu administration, and permissions.
AngularTypeScriptJavaScriptHTMLCSSASP.NET CoreREST APIsSQL ServerEntity Framework
View project ↗Project · Backend Developer—
Nebras – School Restoration Donation Management System
A backend-focused platform for donation management and school rehabilitation initiatives for damaged schools in Syria, including a separated photo service accessed through an API Gateway.
ASP.NET CoreREST APIsEntity FrameworkSQL ServerDockerAPI GatewayStrangler Fig Pattern
View project ↗Project · Backend Developer—
Library & Book Lending Management System
A full-stack system for managing books, users, borrowing, returns, and lending records through an ASP.NET Core backend and Angular frontend.
ASP.NET CoreREST APIsSQL ServerEntity FrameworkAngularJavaScript
View project ↗Application Security
Security work across authentication, authorization, traffic analysis, and application security testing.
Application Security Testing
Testing and traffic analysis for APIs and Android applications using dedicated security tools.
Burp SuiteOWASP ZAPNmap
Architecture & DevOps
Practical experience with API Gateway, Strangler Fig Pattern, Layered Architecture, Docker, Git, and backend integration.
Areas of practiceStructured backend and service separation
01API Gateway
02Strangler Fig Pattern
03Layered Architecture
04Docker · Git · GitHub · GitLab
AI Integration
Practical experience integrating local AI models into backend workflows to support planning, task generation, and project analysis.
Ollama · Qwen
Local model integration with backend workflows and project/task management results.
OllamaQwen
Assisted capabilities
Initiative and task generation, risk analysis, delay analysis, and planning recommendations.
TECHNICAL SYSTEM // 05
Skills & Technical Stack
Technologies and tools used across backend development, APIs, application security, and frontend integration.
C#ASP.NET CoreREST APIsMVCEntity Framework
SQL ServerMySQLPostgreSQL
JWTRBACBurp SuiteOWASP ZAPNmap
DockerGitGitHubGitLab
API GatewayStrangler Fig PatternLayered Architecture
AngularHTMLCSSJavaScriptTypeScript
OllamaQwen
CAREER RECORD // 06
Experience & Education
Professional experience, education, and languages.
Work Experience
Application Security Tester & Backend Developer
Government Sector
- Build and maintain 70+ secure REST API endpoints using ASP.NET Core, with emphasis on authentication and authorization.
- Perform application security testing and traffic analysis using Burp Suite across APIs and Android applications.
- Work with development teams to improve backend security practices and optimize data handling.
ASP.NET CoreREST APIsBurp SuiteApplication Security
Freelance Backend & API Developer
Freelance
- Delivered 3+ backend solutions using ASP.NET Core, each containing approximately 30–50 RESTful endpoints.
- Designed relational database schemas and optimized SQL queries for better data handling and system efficiency.
- Implemented JWT authentication, RBAC, and backend integration for frontend applications.
ASP.NET CoreREST APIsSQL ServerJWTRBAC
Education
B.S. in Information Engineering
University of Aleppo
Languages
CONTACT // 07
Let's Connect
For backend development, API opportunities, and challenging software projects.
Get In Touch