Toka Mahmoud

Backend-focused Full Stack Developer with production experience building and maintaining an enterprise shipping & freight forwarding platform. Contributor across multiple business modules covering the full shipping lifecycle, and sole owner of the platform's accounting module — including ZATCA-compliant e-invoicing, full financial reporting, and treasury management. Strong foundation in Laravel, MySQL, clean architecture, OOP, and RBAC.

PHP Full Stack Developer at Deja Tech (2025-02 – Present)

Contributor to an enterprise Shipping & Freight Forwarding Management Platform serving real shipping agencies and logistics companies — covering the full business lifecycle from master data and user setup through booking, operations, and shipping stages to financial reporting.

• Designed and developed master data and user management modules — the foundation layer covering company setup, user accounts, roles, and all system configuration.
• Built the customer management and CRM module — customer lifecycle tracking, contact management, and communication history linked to shipments.
• Developed the booking module — booking creation and management integrated with customer data and operational workflows.
• Built the quotation module — quotation creation, pricing logic, approval workflows, and automated PDF generation for clients.
• Contributed to operations and job tracking modules — managing the full operational shipping lifecycle from job creation through execution.
• Implemented document management workflows — upload, generation, and tracking of shipping documents across all modules.
• Owned the platform's accounting module end-to-end: Chart of Accounts, Journal Entries, Accounts Payable & Receivable, Banks & Treasury, Transactions, ZATCA-compliant e-invoicing with QR code & PDF, and financial reports (P&L, Balance Sheet, Trial Balance, Account Statements).
• Applied Role-Based Access Control (RBAC) across all modules ensuring secure, permission-driven data access for all user types.
• Implemented PDF generation and Excel import/export with filters across all major modules for document output and data management.
• Applied soft delete with full restoration and audit trail ensuring zero data loss and full traceability across the platform.
• Built AJAX-driven UI interactions across modules, eliminating page reloads and significantly improving system responsiveness.
• Designed and optimized database queries and backend logic to support platform performance under live operational load.
• Resolved critical production bugs under live pressure and communicated directly with clients to troubleshoot issues and refine workflows.

Bachelor of Production & Industrial Engineering in Production & Industrial Engineering – Faculty of Engineering, Alexandria University (2021-07)