Hi, my name is

Khalid Hamza.

I lead teams and build scalable software systems.

I'm a Software Team Leader & Software Architect with 8+ years of experience designing and optimizing high‑performance FinTech platforms. I lead cross‑functional teams, architect microservices, and deliver secure transaction‑heavy systems across PHP/Laravel, Python, and AWS.

View my work Get in touch

ABOUT ME

I'm a software engineer focused on building secure, resilient payment systems. I enjoy leading teams, reviewing architecture, and mentoring developers to ship reliable software.

Recently, I've been architecting and scaling platforms at UPayments, integrating multiple gateways (MPGS, Cybersource, KNET) and wallets (Apple/Google/Samsung Pay), while pushing performance with query and backend optimizations.

With over 8 years of experience, I've developed a deep expertise in PHP/Laravel and Python, consistently delivering high-performance solutions that process millions in transactions. My focus is on building scalable architectures that can handle growing transaction volumes while maintaining security and reliability.

Beyond technical implementation, I'm passionate about fostering team growth through code reviews, architecture discussions, and mentoring. I believe in creating an environment where developers can learn, grow, and deliver their best work.

When I'm not shipping features, I'm improving developer workflows with CI/CD, observability, and clean code practices.

Khalid Hamza

EXPERIENCE

  1. Tech Lead & Software Architect • UPayments

    • Led developers across sprints, code reviews, and deployments to ensure on‑time delivery.
    • Designed/implemented secure, scalable payment solutions handling high transaction volumes.
    • Set architecture standards, guided migrations, and optimized DB queries to boost performance.
    • Introduced agile best practices to improve team velocity and transparency.

  2. Senior Software Developer • UPayments

    • Built core platform features; optimized queries and application logic for scalability.
    • Mentored juniors and led technical discussions on code quality and architecture.
    • Aligned solutions with business and compliance requirements.

  3. Software Developer • UPayments

    • Developed a secure web‑based payment application integrating MPGS, KNET, Apple/Google Pay.
    • Collaborated with product & security to meet regulatory standards and UX goals.
    • Improved reliability with validation and fallback mechanisms.

  4. Software Developer • Alessa Healthcare

    • Built tools in PHP/Laravel & Python for orders, data sync, and automation.
    • Led integrations and the Oracle ERP → Odoo migration across Magento/Odoo/Oracle.
    • Delivered real‑time inventory & product sync across sales channels.

  5. Software Developer • Sketch Media (Part‑time)

    • Engineered RESTful APIs and backends in PHP/Laravel/MySQL for mobile & web apps.
    • Managed deployments, migrations, and server optimizations.

  6. Full‑Stack Developer • TechBox Group

    • Designed REST APIs and integrated third‑party services; contributed across the SDLC.
    • Worked with UI/UX & mobile teams for seamless cross‑platform experiences.

  7. Full‑Stack Developer • Sahalat Delivery Solutions (Part‑time)

    • Built PHP systems for real‑time driver tracking and dispatch automation.
    • Integrated Google Maps APIs and improved route planning.

  8. Junior PHP Developer • Bahr Solutions

    • Maintained ERP modules and implemented business logic with senior guidance.

SKILLS

Core Technologies

PHP/Laravel
Python
JavaScript
Dart/Flutter

Databases

  • MySQL
  • PostgreSQL
  • MongoDB

Payment Systems

  • MPGS Integration
  • Cybersource
  • KNET
  • Digital Wallets (Apple, Google, and Samsung Pay)
  • Payment Gateway Architecture
  • PCI DSS Compliance

Architecture & DevOps

  • Microservices Architecture
  • AWS (EC2, S3, RDS, SQS)
  • Docker & Containerization
  • CI/CD (Jenkins, GitHub Actions)
  • Performance Optimization
  • System Design

Leadership

  • Team Management
  • Agile/Scrum Methodologies
  • Code Review & Mentoring
  • Technical Planning
  • Project Estimation
  • Cross-functional Collaboration

SELECTED PROJECTS

UPayments Core Platform

High‑throughput payment platform integrating MPGS, KNET, and major wallets. Optimized SQL and backend pipelines to reduce response times and improve reliability.

  • PHP
  • Laravel
  • MySQL
  • AWS
  • SQS
  • RabbitMq
  • MPGS
  • Cybsersource
  • KNET

Oracle → Odoo Migration

Led data migration and integrations across Magento, Odoo, and Oracle to streamline retail operations and reduce costs.

  • Python
  • Laravel
  • Odoo
  • Oracle
  • MySQL
  • MongoDB
  • Integrations

Dispatch & Tracking System

Real���time driver tracking with automated dispatch logic based on proximity, availability, and delivery priorities.

  • PHP
  • REST APIs
  • Google Maps

GET IN TOUCH

I'm open to Tech Lead and Software Architect roles, whether full-time, freelance, or contract. With expertise in payment systems, team leadership, and scalable architectures, I'm available for both on-site and remote positions worldwide. If you're looking for someone to lead your engineering team, architect your next big project, or contribute as a technical consultant, let's connect.