Mahmoud Abou-Zaeid | Software Engineer - Backend, APIs & Oracle APEX

Professional summary

Engineered for reliable & automated enterprise operations.

I build software around the way businesses actually work - turning complex operations into secure, automated, database-driven systems. Specialized in backend architecture, REST APIs, relational database design (SQL Server, Oracle, MySQL), and enterprise Oracle APEX solutions, I engineer layered C# (.NET 8) services and PL/SQL data engines equipped with fine-grained RBAC security, JWT authentication, and automated workflow pipelines.

Based inCairo, Egypt

LanguagesArabic (native) · English (technical, B1)

Open toRemote · Hybrid · On-site · Freelance

CurrentlyB.Sc. ICT student at NCTU

Backend & API Engineering

Layered C# (.NET 8) and Python/Flask micro-services, RESTful endpoints, JWT authentication, RBAC access controls, and structured exception handling.

Relational Database Architecture

Microsoft SQL Server, Oracle Database, and MySQL - ERD modeling, schema normalization, PL/SQL & T-SQL routines, and query performance tuning.

Workflow & Process Automation

Multi-stage inspection approval pipelines, valuation engines, Zoho cloud image storage, and automated PDF document generation.

Security & Performance Tuning

Strict input validation, passwordless biometric authentication (Face ID), 100% RBAC security compliance, and tuning slow queries from 5 minutes to 3 seconds.

Selected Projects

Portfolio of production-grade systems.

Horizontal carousel of verified engineering projects: problem, solution, technology stack, and business impact.

Private production project

Euro Loss Adjusters

Euro Loss Adjusters - Insurance Loss Assessment Platform

Problem: Vehicle insurance loss assessment required handling pre-repair, post-repair, supplementary, and salvage cases with multi-stage approvals, valuations, and reports.

What I built: Database-driven Oracle APEX platform supporting vehicle inspection and assessment workflows, automated approvals, Zoho image storage, and automated report generation.

Oracle APEXOracle DatabaseSQL / PL-SQLZoho Integration

30% processing-time reduction · 25% user-satisfaction improvement · slow page cut from ~5 min to 3 seconds

Verified system · Details on request

Private production project

Euro Assist

EuroCar360 - Vehicle Verification REST API

Problem: Vehicle verification operations required a structured, secure backend for high-throughput data handling and document processing.

What I built: Production REST API with layered architecture, JWT authentication, RBAC authorization, global exception handling, and a file-upload pipeline backed by SQL Server.

C#ASP.NET Core (.NET 8)EF CoreSQL ServerJWT / RBAC

100% RBAC compliance · High-throughput verification pipeline

Verified system · Details on request

Private production project

Euro Assist / Banks

Euro Inspection 360 - Vehicle Inspection Management Platform

Problem: Banks and inspection companies needed an end-to-end platform to manage vehicle inspection lifecycles, pricing approvals, and report generation.

What I built: Inspection lifecycle platform with report generation, pricing approvals, inspector and bank-user administration, and workflow automation built on Python/Flask and MySQL.

PythonFlaskMySQLJavaScriptHTML / CSS

Streamlined multi-bank inspection processing

Verified system · Details on request

Private project

Independent / Oracle APEX

Face ID Authentication System for Oracle APEX

Problem: Oracle APEX web applications needed a secure, passwordless biometric authentication method for quick sign-in.

What I built: Facial-recognition system integrated with Oracle APEX: real-time capture via face-api.js, encrypted facial descriptors in Oracle Database, and PL/SQL matching.

Oracle APEXOracle DatabasePL-SQLJavaScriptface-api.js

Face verification completed in under 1 second

Verified system · Details on request

Private project

NCTU Academic Project

Fain App - Academic Management System

Problem: Faculty and students required a centralized portal for schedules, assignments, attendance, and project publication.

What I built: Oracle APEX academic platform centralizing course workflows, attendance tracking, and a Student Project Showcase for video and document publishing.

Oracle APEXOracle DatabaseSQL / PL-SQLJavaScript

Centralized academic operations & student project hosting

Verified system · Details on request

Private production project

The Pink Club

The Pink Club Dashboard & Mobile API

Problem: A membership organization needed to handle users, subscription packages, and member authentication for their mobile app.

What I built: MySQL-backed administration dashboard with PHP REST APIs powering member access and subscription management.

PHPMySQLREST APIsHTML / CSS / JS

Active mobile app backend integration

Verified system · Details on request

Internal tool

Euro Assist

Euro Card Generator System

Problem: Batch membership card generation required precise custom template rendering and export options.

What I built: Automated card generator tool featuring Excel batch imports, Pillow rendering engine, Arabic RTL support, live previews, and PDF/PNG exporting.

PythonFlaskSQLAlchemySQLitePillow

Automated batch membership card export

Verified system · Details on request

1 of 7

Swipe or use arrows to view all 7 production projects.

Technical Skills

Modern backend stack with database depth.

Languages, frameworks, database engines, security protocols, and engineering practices grouped by core competence.

Languages

Core programming & data languages

C# SQL / PL-SQL Python PHP JavaScript Java C

Backend & Frameworks

Production application frameworks

ASP.NET Core · .NET 8 Entity Framework Core Oracle APEX Flask SQLAlchemy

Databases & Data Modeling

Database engines and schema engineering

SQL Server Oracle Database MySQL SQLite ERD Modeling Schema Normalization Query Optimization

APIs & Integrations

System communication & web services

REST API Design REST API Integration Third-Party Web Services Zoho Cloud Storage

Security & Access Control

Authentication and authorization standards

Authentication Authorization RBAC JWT Data Validation Biometric Authentication

Architecture & Design

Software engineering principles

OOP SOLID Principles Layered Architecture System Design Workflow Automation

Reporting & Development Tools

Output generation & developer tooling

Jasper Reports Automated PDF Generation Git Postman VS Code Visual Studio

Experience

Engineering roles across APIs, APEX, and enterprise operations.

Software Engineer · Euro Assist

Giza, Egypt

Aug 2025 – Aug 2026

Developed scalable backend micro-services and REST APIs using C#, ASP.NET Core (.NET 8), and Entity Framework Core applying OOP and SOLID principles.
Designed normalized relational database schemas and ERD models in SQL Server to ensure data integrity and maintainable data structures.
Implemented authentication, authorization, RBAC, and strict input validation controls across application services and REST endpoints.
Integrated third-party APIs and cloud components while maintaining structured data pipelines and reliable execution.
Reviewed code implementations, investigated defects, and improved software maintainability and system reliability through structured troubleshooting.
Supported internal IT operations by configuring Windows workstations, maintaining office infrastructure, and resolving hardware, software, and network issues.

Oracle APEX Developer · Euro Loss Adjusters

Giza, Egypt

Aug 2023 – Aug 2026

Architected an enterprise Oracle APEX insurance loss-assessment platform for pre-repair, post-repair, supplementary, and salvage vehicle inspections.
Engineered 20+ SQL/PLSQL functions supporting database-driven application logic and complex business approval workflows.
Reduced processing time by 30% through SQL/PLSQL optimization and business logic refactoring.
Investigated and optimized PL/SQL query logic for a slow-loading page, reducing load time from approximately 5 minutes to 3 seconds.
Improved user satisfaction by 25% through workflow enhancements, Zoho cloud image-storage integration, and automated report generation.
Maintained a documented 99% issue-resolution rate and 100% RBAC security compliance across production systems.

Education

Academic foundation & technological focus.

Formal education in software engineering, databases, networking, and information systems.

In progress

New Cairo Technological University

Bachelor’s in Information and Communication Technology

Cairo, Egypt Sep 2023 – May 2027 (expected)

Focus: Software engineering · Information systems · Communication technology

Curriculum Breakdown · Software Development Track

Year 1: Programming Essentials in Python and C · Cyber Security & IT Essentials · Intro to IoT · Mathematics · Technical English · MS Office.
Year 2: Programming in C++ · Java I · Web Programming I & II · Intro to Databases & Database Programming · Linux · Operating Systems · Data Structures · CCNA I · Capstone Design.
Year 3: S/W Development Track - Advanced C & C++ · Java II · Mobile Programming I · Data Communication · Computer Architecture & Microprocessors · Computer Graphics · Embedded Systems · Network Programming · Algorithms · Software Engineering.
Year 4: S/W Development Track - Mobile Programming II · Windows Programming I & II · Artificial Intelligence · IoT Architecture & Programming · CCNA II · Signal Processing · Big Data & Analytics · IoT Security · Machine Learning · Robotics · Graduation Project.

Completed

Elsewedy Technical Academy

Programming Department - Diploma

Egypt Completed

Focus: Programming fundamentals · application development foundations

Verified Credentials

Professional certifications & training.

Official cloud, database, cybersecurity, and software engineering credentials from Oracle, Microsoft, Cisco, IBM, and ALX.

Oracle University · 1Z0-771 2025

Oracle APEX Cloud Developer Certified Professional

Advanced Oracle APEX 24c cloud developer certification focusing on enterprise PL/SQL logic, security, and cloud deployments.

Verified

Oracle University · 1Z0-770 2023

Oracle APEX Cloud Developer Certified Professional

Professional APEX cloud application development certification verifying skills in low-code database applications.

Verified

Oracle University · 1Z0-1085-23 2023

Oracle Cloud Infrastructure Foundations Associate

Core Oracle Cloud Infrastructure (OCI) architecture, cloud security, networking, and storage services.

Verified

Oracle Academy 2022

Database Foundations

Relational database modeling, SQL query syntax, table constraints, and schema design principles.

Verified

Oracle Academy 2021

Java Foundations & Fundamentals

Core Java language programming, control structures, object-oriented programming, and algorithms.

Verified

freeCodeCamp & Microsoft 2024

Foundational C# with Microsoft

C# syntax, object-oriented programming, data structures, and .NET runtime fundamentals.

Verified Verify

Cisco Networking Academy 2024

Introduction to Cybersecurity

Fundamental cybersecurity principles, network security concepts, threat mitigation, and privacy protection.

Verified Verify

IBM · Coursera 2023

EDA for Machine Learning

Exploratory data analysis, statistical methods, and data visualization using Python.

Verified Verify

ALX 2024

AICE - AI Career Essentials

Applied artificial intelligence tools, prompt engineering, and workspace productivity workflows.

Verified

Edraak 2024

ICDL Base Certification

International Computer Driving Licence covering computer essentials, word processing, and spreadsheets.

Verified

Mahara-Tech 2026

Object-Oriented Programming using C++

C++ OOP principles, classes, inheritance, polymorphism, encapsulation, and memory structures.

Verified Verify

Mahara-Tech 2026

Python Programming Basics

Fundamental Python programming concepts, data structures, and control flow.

Verified

Mahara-Tech 2026

HTML & CSS Web Fundamentals

Web page layout structuring, HTML5 semantics, CSS styling, and responsive layout.

Verified Verify

Recognition & Achievements

Community & Achievement Badges

Official recognition, community milestones, and digital learning badges from Oracle University, Cisco, and ALX.

Oracle University Community

Oracle Certified User

Official Oracle University Community recognition badge certifying active participation and engagement in Oracle learning networks.

Community

Oracle University Community

Oracle University Community Founding Member

Special distinction awarded by Oracle University to early platform adopters during the official launch of the Oracle MyLearn Community.

Community

Oracle University Achievement

Oracle University 1 Year Anniversary

Milestone badge awarded for 1 year of continuous learning, professional growth, and active membership in the Oracle University MyLearn Community.

Achievement

Oracle University Achievement

Oracle University 2 Year Anniversary

Milestone badge awarded for 2 years of dedicated engagement, continuous technical training, and community contributions.

Achievement

Oracle University Achievement

Oracle University 3 Year Anniversary

Milestone badge awarded for 3 years of ongoing technical excellence and continuous learning within Oracle University.

Achievement

Oracle University Learning

AI for You

Digital completion badge for Oracle University's AI for You program, verifying fundamentals in generative AI, machine learning, and Oracle AI services.

Learning

Oracle University Learning

APEX + AI Champion

Completion badge for Oracle University's APEX + AI Champion course, verifying practical skills in integrating Artificial Intelligence capabilities into Oracle APEX applications.

Learning

Cisco Networking Academy Credential

Introduction to Cybersecurity

Official Cisco Networking Academy digital badge verifying foundational skills in network security, threat defense, and privacy.

Credential Verify

ALX Achievement

AICE Completion Badge

Official animated digital badge awarded by ALX for successfully completing the AI Career Essentials (AICE) program.

Achievement

Oracle University Credential

Oracle APEX Cloud Developer Professional

Official Oracle University digital badge for the APEX Cloud Developer Certified Professional program.

Credential

Oracle University Credential

Oracle Cloud Infrastructure Foundations Associate

Official Oracle University digital badge for the OCI Foundations Associate certification (1Z0-1085).

Credential

Services & Solutions

Turning complex operations into automated systems.

Targeted engineering solutions grounded in production experience across databases, APIs, security, and business process automation.

Backend & API Engineering

Build secure, maintainable REST APIs and backend micro-services using ASP.NET Core (.NET 8) and Python/Flask that eliminate operational bottlenecks.

Database Design & Optimization

Architect normalized relational schemas (SQL Server, Oracle, MySQL), write complex PL/SQL & T-SQL routines, and tune slow queries down from minutes to seconds.

Oracle APEX Development

Engineer enterprise low-code web applications backed by Oracle Database, custom PL/SQL logic, and responsive user interfaces.

Workflow & Process Automation

Automate multi-stage approval pipelines, status tracking, cloud image storage, and dynamic PDF document generation.

Authentication & Application Security

Implement robust JWT tokens, role-based access control (RBAC), data validation, and passwordless biometric verification (Face ID).

Third-Party API Integration

Integrate external cloud services (Zoho storage, web APIs, payment gateways) into backend systems with structured data validation.

Contact

Let's turn complex operations into reliable systems.

Available in Cairo, Egypt for backend, full-stack, Oracle APEX, database, and automation-focused engineering opportunities - including remote and freelance.

Phone+20 1017119544 Emailma.abouzaeid@gmail.com GitHubma-abouzaeid LinkedInma-abouzaeid Websitemo.abouzaeid.site

Start a conversation

Tell me what you are building, where the bottleneck is, or what needs to become more reliable.