Senior Full-Stack Engineer & SaaS Architect

Senior Full-Stack Engineer & SaaS Architect

Dhiaa Mostafa

Senior Full-Stack Engineer & SaaS Architect with 6+ years of experience specializing in scalable multi-tenant systems, backend engineering, ERP & API integrations, Middleware architecture, and production-grade RESTful APIs across Saudi Arabia and the Gulf.

>

Explore Architecture Resume PDF
OPERATIONAL LATENCY: 14ms · 99.99% UPTIME
01 — Systems & Architecture Profile

About Me

Dhiaa Mostafa
6+ YRS EXP

Dhiaa Mostafa

// Senior Full-Stack Engineer & SaaS Architect · 6+ Years
6+ Years Experience
SAR 4M+ Solutions Value
500+ Enterprise Clients
7k+ Active Fleet Agents

I’m a Senior Full-Stack Engineer & SaaS Architect specializing in scalable multi-tenant systems, backend engineering, ERP integrations, Middleware architecture, and production-grade APIs. I have a proven track record of turning complex business requirements into reliable, scalable software across SaaS, ERP, logistics, HR, e-commerce, and enterprise systems.

At Bander Trading Company, I architected and developed a SaaS logistics platform serving 7,000+ active delivery agents and led Evix ERP integrations for 500+ enterprise clients. I also improved API performance by 40%+ through Redis caching, database optimization, query tuning, and backend architecture improvements.

My experience spans web and mobile applications, enterprise platforms, API integrations, Middleware, real-time systems, and payment integrations, connecting business systems and services through reliable integration architectures. I also work with AI and LLM technologies to build intelligent workflows for document processing, structured data extraction, and business automation.

email dhiaamostafa46@gmail.com

location Riyadh, Saudi Arabia

phone +966 533 166 742

Download Resume (PDF)
02 — Service Data Pipeline Workflow

Architectural Capabilities

Enterprise software services engineered for scale, reliability, and business impact.

01

Backend, Middleware & Microservices

Designing scalable production-grade backends with high concurrency. Event-driven Laravel and Node.js microservices, C# / .NET Core, custom Middleware connectors, RESTful APIs, and WebSockets.

Node.js & NestJS Laravel MVC C# & .NET Core RESTful APIs WebSockets
Request Spec
02

ERP & Enterprise Integrations

Connecting core enterprise software (Evix ERP, SAP) with checkout portals, payment gateways (Tabby, HyperPay), and ZATCA Phase-2 tax invoicing frameworks.

Evix ERP ZATCA Phase 2 Payment Gateways Middleware Hub
Request Spec
03

SaaS Multi-Tenant Architecture

Architecting cloud platforms with strict tenant data isolation, tenant-specific subdomains, automated double-entry ledger bookkeeping, and global RBAC controls.

Multi-Tenancy Subdomains Data Isolation RBAC
Request Spec
04

AI & LLM Automation Workflows

Building intelligent automation pipelines using Azure OpenAI and LLM APIs to extract structured data from documents (OCR to JSON), streamline workflows, and enable AI business insights.

Azure OpenAI OCR to JSON LLM APIs AI Workflows
Request Spec
05

Real-Time Operations & Dispatchers

High-concurrency dispatcher panels featuring real-time WebSockets vehicle mapping, live fleet status feeds, and instant inventory adjustments.

WebSockets Live Fleet Map HUD Dashboards 7k+ Agents
Request Spec
06

Database Optimization & Data Modeling

Designing scalable PostgreSQL, MySQL & SQL Server schemas, query optimization, indexing, and Redis caching strategies delivering 40%+ performance gains.

PostgreSQL SQL Server Redis Caching Index Tuning
Request Spec
03 — Tech Dependency Graph

Technological Matrix

Languages, databases, frameworks, cloud infrastructure, and integration tools I engineer with professionally.

04 — Project Intelligence & Verification Engine

Enterprise Project Intelligence

Real-time data ingestion from authentic sources combined with AI Computer Vision blueprint extraction and performance telemetry.

05 — Professional Journey

Work Experience

My professional software engineering career across Saudi Arabia, Gulf region, and remote roles.

Bander Trading Company (Evix ERP) — Riyadh, SA

Current

Senior Software Engineer — ERP Integration & SaaS Architecture

2023 — Present (2 yrs 9 mos)

  • Led the architecture and implementation of Evix ERP integrations for 500+ enterprise clients using RESTful APIs, API Gateway services, and Middleware workflows.
  • Architected and developed a multi-tenant SaaS logistics platform using Laravel, scaling to 7,000+ active delivery agents with real-time GPS tracking and WebSockets with zero downtime.
  • Architected and developed an HR Management System covering biometric attendance, automated payroll, leave management, RBAC, and employee mobile APIs (WPS compliant).
  • Designed event-driven integration processes using Redis Queues and asynchronous workers, reducing database query and API latency by over 40%.
  • Implemented Docker containerization, AWS cloud infrastructure (EC2, S3, RDS), and GitHub Actions CI/CD automated deployment pipelines.
Laravel / PHP Evix ERP ZATCA Phase 2 PostgreSQL Redis Queues WebSockets (7k+ Agents) Docker AWS Cloud

Eyein Information Technology — Riyadh, SA

Current

Senior Full-Stack Engineer (Hybrid / Remote)

2023 — Present (2 yrs 9 mos)

  • Developed and maintained enterprise web platforms, e-commerce solutions, and digital services for corporate, nonprofit, and commercial organizations using Node.js, NestJS, TypeScript, and modern JS.
  • Designed and developed scalable backend services and RESTful APIs using Node.js, TypeScript, PostgreSQL, and MongoDB.
  • Implemented secure authentication, Role-Based Access Control (RBAC), payment gateways (Tabby BNPL), and third-party APIs across multiple business platforms.
  • Built real-time features using WebSockets and event-driven architecture, focusing on reliability, performance, and scalability.
Node.js & NestJS TypeScript PostgreSQL MongoDB Tabby BNPL WebSockets RBAC Security

Freelance Software Engineering — Remote

Full-Stack Software Engineer

2019 — Present (7+ yrs)

  • Delivered custom full-stack web solutions for regional clients across AI-powered applications, e-commerce platforms, and third-party system integrations.
  • Designed and developed scalable web applications using JavaScript, TypeScript, React, Node.js, and MongoDB with a strong focus on performance and UX.
  • Integrated third-party RESTful APIs and external services to connect applications with business platforms and streamline data exchange.
  • Optimized application performance, improved frontend responsiveness, and resolved complex database and legacy-system bottlenecks.
React.js & Next.js Node.js TypeScript MongoDB AI Workflows RESTful APIs

Smart System — Riyadh, SA

Full-Stack Developer

2022 — 2023 (1 yr)

  • Developed ERP, CRM, Restaurant Management, POS, and Hotel Reservation systems across ASP.NET Core, C#, Node.js, NestJS, React, and Laravel.
  • Designed and developed a multi-tenant SaaS platform, enabling companies to manage independent systems with custom subdomains and separate databases.
  • Built POS integration solutions connecting sales terminals, menu management, order processing, kitchen workflows, and inventory reconciliation.
  • Engineered scalable RESTful APIs and backend services using ASP.NET Core, Node.js, NestJS, PostgreSQL, and SQL Server with strict data integrity.
ASP.NET Core (C#) Laravel SQL Server Multi-Tenant SaaS POS Integrations

Musanid United — Riyadh, SA

Full-Stack Engineer (Remote Contract)

2023 (8 mos)

  • Architected and developed the Musaned United platform using NestJS and Next.js, delivering a scalable production-ready solution.
  • Designed and implemented RESTful APIs, multi-authentication, and Role-Based Access Control (RBAC).
  • Integrated payment gateways and third-party APIs to support core business workflows, and containerized backend services with Docker.
NestJS Next.js TypeScript Payment Gateways Docker

SKYSOFT — Sana'a, Yemen

Flutter Developer / Mobile & Web Developer

2020 — 2022 (2 yrs 8 mos)

  • Developed cross-platform mobile applications using Flutter (Dart) for education, e-commerce, accessibility, and business platforms.
  • Developed Miran (LMS platform), Khibrah (expertise platform), Mubser (accessibility platform for visually impaired), Spare (spare parts e-commerce), and SEO Players.
  • Built and integrated RESTful APIs with mobile applications and web platforms within Agile teams.
Flutter & Dart Cross-Platform Mobile RESTful APIs Firebase
06 — Academic & Qualifications

Education & Certifications

Academic degree & professional engineering bootcamps

Bachelor's Degree in Information Technology

Ibb University

2017 — Graduated May 2020

Pro Frontend Engineer

ReactJS + TypeScript + Redux Toolkit

Udemy Certified

Deep Learning Minicamp

AI, Machine Learning & Neural Networks

AI Certified

Cross-Platform Mobile Architecture

Flutter & Dart Mobile Development

Udemy Certified
07 — Operations Console & Intake Portal

System Intake Portal

Configure your project specifications below to generate an instant technical brief, or contact me directly.

Email dhiaamostafa46@gmail.com
WhatsApp / Phone +966 533 166 742
LinkedIn linkedin.com/in/dhiaamostafa
Location Riyadh, Saudi Arabia
[ OPERATIONS_CONSOLE_INTAKE ] ■ CONFIGURE_REQUEST