Software Developer

Kassem
Abboud

Specialized in mobile ,windows & backend systems. Building POS solutions,Windows & mobile apps, and scalable APIs with C#, Flutter, Node.js, and SQL Server.

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Kassem Abboud
9+
Projects
9
Years
11
Skills
FlutterC# .NETNode.js SQL ServerFirebaseSwift REST APIsn8n AutomationJava Mobile DevPOS SystemsIT Solutions FlutterC# .NETNode.js SQL ServerFirebaseSwift REST APIsn8n AutomationJava Mobile DevPOS SystemsIT Solutions
Expertise

Tech Stack

Full-stack capability from mobile to server and Windows desktop, built through years of real-world projects and client solutions.

Flutter C# .NET Node.js REST APIs SQL Server Firebase Swift Java n8n Automation IT Solutions
Background

Experience

2017 — Now
Freelancer Developer
  • Built mobile apps using Flutter, Java and Swift
  • Built Windows desktop apps using C#
  • Designed REST APIs using Node.js and .NET
  • Backend systems with SQL Server and Firebase
10+ Years
IT Solutions — Ward Company
  • Managed and maintained the company's full IT infrastructure
  • Provided technical support and troubleshooting across departments
  • Oversaw network setup, hardware, and software systems
  • Implemented and maintained internal business solutions
Portfolio

Selected Work

01
MMM POS System
Advanced POS system for managing sales, inventory, invoices, customers, and financial operations in real time. Integrated with thermal printers, barcode systems, NFC, and SQL Server.
C# SQL Server .NET
02
n8n Automation
Intelligent automation systems connecting WhatsApp, Telegram, and SQL Server databases for real-time business operations. Chat and voice-based retrieval of statements, reports, and customer data.
n8n SQL Server WhatsApp Api OpenAi Api
03
Meditel
Phone application for internet distributors — issue and print invoices, manage collections through multiple collectors.
Flutter .NET SQL Server
04
MT Trading
Mobile application for a trading office — manage customer account departments and follow up on the movement of funds.
Flutter .NET SQL Server
05
ISC Alpha
Mobile app connected to ISC accounting software — follow up on stores and invoices, send account statements via WhatsApp.
Flutter Node.js SQL Server
06
ISC Power
Organizing the input of electricity and tax meter information through a cloud service.
Flutter Node.js SQL Server
07
MNE App
Mobile application for a mobile & accessories shop — manage sales, debts, item quantities, and send SMS to all clients.
Flutter Node.js Firebase
08
Sparrow Caffe
Web application for a small café — manage sales, orders, and tables. Live at caffe-38150.web.app  ·  test user pass: z87654321
Flutter Web Firebase
09
Zawtar App
Mobile news application for the village of Zawtar with push notifications. Published to the Play Store and App Store.
Swift Java Firebase
Contact
Let's build together.
abboudkassem1@gmail.com Email +961 70 385 816 Phone WhatsApp +961 70 385 816