Portrait of Osama Hattab

Software Engineer, Microservices Architect

OsamaHattab

Backend engineer at Bayanat and founder of Kiyonax, building secure Spring Boot systems for banks and government.

  • Bayanat
  • Kiyonax
  • IEEE
  • Al-Hussein Bin Talal University
  • Arab AI Olympiad
  • Jordan Engineers Association

First in the world at IEEEXtreme 20, for six straight hours.

IEEEXtreme is a 24-hour global programming competition. Our Kiyonax team reached the top of the worldwide leaderboard and held it for over six hours, the only Jordanian team to get there, and finished 62nd among thousands of teams.

6+ hrsat #1 62final rank worldwide

Experience

I started working while still at university, so some of these overlap.

  • Jun 2026
    Present

    Founder & Software Engineer

    Kiyonax, remote

    • Run the company end to end: product, architecture, development and client delivery.
    • Built two products, Kiyonax POS and Kiyonax PPM.
    • Delivered a store management platform for Lavita Perfume covering sales, purchasing and inventory.
  • May 2025
    Present

    Software Engineer

    Bayanat, Amman, hybrid

    • Build microservices with Java, Spring Boot and Spring Cloud.
    • Led security hardening: fixed critical vulnerabilities and implemented Spring Security with JWT.
    • Manage Linux servers, Docker deployments and hosting on Google Cloud.
    • Ship full-stack features with React on top of Spring Data and Oracle Database.
    • Deliver and support systems for Alinma Bank, the Saudi Ministry of Transport, the Central Bank of Jordan and Housing Bank on Oracle ADF, OAF and Spring Boot.
  • 2023
    2026

    Freelance Developer & Consultant

    Multiple clients

    • Sales Hub POS (2025), a desktop point-of-sale system in C# and .NET.
    • Lavita Perfume (2024), a full-stack e-commerce site.
    • Construction management system (2023 to 2024) in .NET for Ibrahim Hattab Construction Contracting Est.
  • Dec 2024
    Nov 2025

    Student Branch Chair

    IEEE, Al-Hussein Bin Talal University. Vice Chair until Feb 2025.

    • Led branch operations and volunteer teams.
    • Organized the Code Matrix programming contest in 2024 and 2025.
    • Represented the branch at the IEEE SAC Jordan Leadership Summit 2025.
  • Oct 2024
    May 2025

    Programming Instructor

    Independent and training centers

    • Taught a 6-month C++ course: OOP, data structures and algorithms.
  • Mar 2025
    Apr 2025

    Front-End Web Developer

    Star Company

    • Built responsive websites with HTML, CSS, JavaScript, Bootstrap and jQuery.

B.Sc. Computer Science

Al-Hussein Bin Talal University, grade Very Good. Arabic native, English very good.

2022 to 2026

Things I have built and shipped

Most of my day-to-day work is enterprise software for banks and government entities in Jordan and Saudi Arabia.

Bayanat

Enterprise work at Bayanat

Shift by Bayanat

An AI assistant for internal operations. I worked across the AI layer, the Spring Boot microservices behind it and the React front end.

LLM / RAGSpring BootMicroservicesReact

ERP Interfaces

Alinma Bank, Saudi Arabia

Oracle OAFDevelopment

ZATCA Integration

Saudi Ministry of Transport (JTC)

Spring BootDevelopment

Lending System

Central Bank of Jordan

Oracle ADFSupport

Housing System

Central Bank of Jordan

Oracle ADFSupport

Medical System

Housing Bank

Oracle OAFSupport

Payslip System

Housing Bank

Oracle OAFSupport
Kiyonax

Products at Kiyonax

Kiyonax POS

Point of sale that adapts to any type of business.

.NET

Kiyonax PPM

Project and portfolio management, a replacement for Microsoft Project Web App.

Spring Boot microservices, React

Lavita Perfume

Store management for a perfume retailer, built for a Kiyonax client.

Quarkus, React

Independent and freelance

Rasikh

Store ecosystem with web and mobile apps.

Spring Boot, React, Flutter

Sales Hub POS

Desktop point of sale for sales and inventory.

C#, .NET

Construction management

Internal system for a contracting company.

C#, .NET

What I work with

Backend

  • Java
  • Spring Boot
  • Spring Cloud
  • Spring Security, JWT
  • Spring Data, Hibernate
  • Quarkus
  • Jakarta EE

Oracle

  • Oracle ADF
  • Oracle OAF
  • Oracle APEX
  • Oracle Database

Security and integration

  • OAuth 2.0
  • Identity federation
  • API integration
  • AOP
  • System analysis

DevOps and cloud

  • Google Cloud
  • Docker
  • Linux (Ubuntu)
  • CI/CD
  • Git
  • GitHub

Data

  • Oracle
  • PostgreSQL
  • MySQL
  • SQLite

Also

  • React
  • JavaScript
  • Generative AI, RAG
  • C#
  • .NET
  • Python
  • PHP
  • C++

Competitions

  • IEEEXtreme 20

    24-hour global programming competition, team Kiyonax, 2026

    #1 for 6+ hrs, 62nd final
  • Arab AI Olympiad

    STEAM Center, April 2025. Also competed in 2024.

    3rd, Middle East
  • Wanted Innovate

    Jordan Engineers Association innovation challenge

    3rd, Cybersecurity
  • IEEEXtreme 18

    24-hour global programming competition, 2024

    Competitor
  • Code Matrix

    Campus programming contest with IEEE AHU, 2024 and 2025

    Organizer

Have a system that needs to hold up?

osama.hattab@kiyonax.com
© 2026 Osama Hattab