I build Java and Spring Boot back ends for payments, e‑invoicing and port logistics: services that move money and documents reliably, and stay fast as they grow.

  • 6+years building back ends
  • 3companies since 2019
  • 4payment gateways integrated
  • 2platforms I build at Elm

Highlights

  • Payments

    First B2B e-wallet in Saudi Arabia

    Co-led its design and build, and its integration into FasahPay.

  • E-invoicing

    ZATCA Phase 2 compliance

    Signed UBL 2.1 e-invoices with QR codes, generated and submitted automatically.

  • Integration

    Partner API for port services

    API keys, per-key rate limits, audit logs and signed, expiring links.

  • Modernisation

    Java 8 to Java 21, safely

    Spring Boot 2 to 4.1, with behaviour proved identical by a 66-case harness.

Experience

  1. Senior Software Engineer

    Elm

    Feb 2024 - present

    Back-end lead for FasahPay, an invoicing and payment platform, and back end of Tamween, a ship provisioning platform for the General Ports Authority.

    FasahPay

    • B2B e-wallet - co-led design and build of the first one in Saudi Arabia.
    • ZATCA Fatoora - generation, signing and submission of Phase 2 e-invoices.
    • Payment gateways - Esal SADAD, IFS SADAD, Payfort and PayTabs.
    • VAT billing - transactional outbox with lock-free claiming and a reconciler.
    • Operation Portal - search, PDFs, webhook re-push and settlement, all audited.
    • Reports - streaming Excel export with flat memory at any size.
    • E-mail recovery - idempotent replay of messages lost in an outage.

    Tamween

    • Service requests - lifecycle with price approval and bilingual PDF permits.
    • Partner API - API keys, rate limits and signed download links.
    • Security - bot protection, OTP race fix, access control, security headers.
    • Port systems - integrated with the Ports Community and Port Management systems.

    Platform

    • Kubernetes - moved four services onto Helm-based GitOps.
    • Upgrades - Java 8 to 21, Spring Boot 2 to 3.5 and 4.1.

  2. Software Engineer

    Data Gear

    Dec 2022 - Jan 2024

    Enterprise Case Management platform, integrated with the FTI, AML and sanctions teams.

    • Messaging APIs - ActiveMQ with JAAS authentication.
    • Workflows - BPMN processes that cut manual steps.
    • Data layer - one abstraction over several database engines.
    • Migrations - Activiti to Flowable, Java 8 to 21, Spring Boot 2.7 to 3.1.

  3. Software Engineer

    InfoSys Tech

    Nov 2019 - Nov 2022

    Logistics and freight forwarding products for clients in Saudi Arabia.

    • FIATA eFBL - digital bills of lading through the FIATA APIs.
    • Trucking - a module for domestic shipping.
    • Dashboard - real-time view across several back ends.
    • Idempotency - stopped duplicate transactions on existing APIs.

Skills

Languages

  • Java
  • SQL
  • PL/SQL
  • T-SQL
  • TypeScript
  • JavaScript

Back end

  • Spring Boot
  • Spring Security
  • Spring Authorization Server
  • JPA / Hibernate
  • Flowable

Data and messaging

  • Oracle
  • PostgreSQL
  • SQL Server
  • Redis
  • Liquibase
  • RabbitMQ
  • ActiveMQ

Delivery and testing

  • Docker
  • Kubernetes
  • Helm
  • OpenShift
  • Jenkins
  • JUnit
  • Testcontainers
  • WireMock

Front end

  • Angular
  • PrimeNG
  • Angular Material
  • NgRx
  • Vitest

Domains

  • Payments
  • E-invoicing
  • Multi-tenancy
  • OAuth2 / OIDC
  • REST / OpenAPI
  • BPMN

Open source

Education

2014 - 2019

Bachelor of Engineering, Communications and Electronics

Alexandria University

Graduation project: detecting myocardial infarction in ECG signals with multiple-instance learning.