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~/khaledtarek

Hi, I'm Khaled Tarek 👋

Senior Software Engineer.
I build scalable backends for
fintech, SaaS & payments.

4+ years of backend engineering in PHP / Laravel, currently leading a 5-engineer team at GetPayin. Specialized in multi-tenant SaaS architecture, Redis-backed queues, and clean-architecture refactors.

📍 Giza, Egypt 🌍 Open to remote & relocation worldwide 🛂 Visa sponsorship required

Selected work

/01 — projects

Hub Travel — Multi-tenant SaaS Booking Platform

GetPayin · 2025–Present · Confidential

In development

The booking SaaS platform I architect and lead at GetPayin — a new product line transitioning the company toward a scalable multi-tenant architecture on Laravel 12. Tenant-aware queues, isolated tenant data, service-oriented decomposition, use-case-driven design. Hardened tenant isolation through cross-tenant integration tests, queue tenancy bootstrappers, and architecture guards in CI — eliminating an entire class of data-leak risk before launch.

Laravel 12 Multi-tenancy Filament 5 Horizon Pulse Pest MySQL Redis

Paylink — Payment Aggregation Platform

GetPayin · 2025–Present · Confidential

Production

Connects merchants with their customers for B2B and B2C payments. I own the architecture, lead a team of 5, and ship the backend (Laravel 12, Horizon, multi-tenancy). Reduced p95 API latency ~55% via Redis caching + Horizon-backed async offload; supports 120+ merchants and 8,000+ daily transactions.

Laravel 12 Horizon Redis MySQL Multi-tenancy Filament

Hypersender Transport →

Open source · 2025

Public

Filament-powered fleet management demo with availability engine, KPI dashboard widgets, monthly trips chart, and a comprehensive Pest test suite (feature + unit). A reference for production-grade Laravel admin panels.

Laravel 11 Filament 5 Pest 3 Livewire

Hypersender — WhatsApp/SMS API Platform

Hypersender · 2025–2026

Closed-source

Refactored a high-demand messaging platform built around the Action Pattern. Moved sync API operations to Redis-backed background queues, increasing peak throughput ~8×. Rebuilt subscription/payment flow, cut failed-transaction rate from ~12% to ~4%. Shipped OTP verification (code + link) and PDF invoicing.

Laravel Redis Queues Action Pattern Webhooks PDF

Open-source contribution: PR #15 in hypersender/hypersender-laravel

Content Scheduler →

Open source · 2025

Public

A Laravel API for scheduling and publishing content across platforms. Sanctum auth, Redis-backed queues, rate-limited endpoints, Vue + Tailwind frontend. Demonstrates clean-architecture layering — controllers thin, services typed, repositories around persistence.

Laravel Sanctum Redis Vue 3 Tailwind

CourseManagementAPI →

Open source · 2025

Public

.NET Core REST API following Clean Architecture (Domain / Application / Infrastructure / API). EF Core, JWT auth, Swagger documentation, and a live deployment. Demonstrates polyglot backend design beyond the Laravel ecosystem.

.NET Core Clean Architecture EF Core JWT Swagger

Tech I work with

/02 — stack

Backend

PHP 8.4 Laravel 12 Filament 5 Livewire Pest 3 Horizon Pulse Sanctum .NET / C#

Architecture

Multi-tenancy SaaS Clean Architecture SOLID DDD (light) Service-oriented Event-driven REST APIs

Data & Cache

MySQL MongoDB Redis (queues) Redis (cache) Eloquent ORM EF Core

Cloud & DevOps

AWS DigitalOcean Docker GitHub Actions CI/CD Vite Vue 3 Tailwind

Experience

/03 — career

May 2025 — Present

Senior Software Engineer · GetPayin

Fintech · Giza, Egypt · Hybrid

Lead a 5-engineer team. Own architecture, infrastructure, and delivery of Paylink (payment aggregation) and a new multi-tenant SaaS booking platform on Laravel 12. Drove engineering standards (Pint, Larastan, Pest gates), shipped Redis-backed perf wins, and hardened tenant isolation in CI.

Nov 2025 — May 2026

Software Engineer · Hypersender

WhatsApp/SMS APIs · Remote · Part-time

Owned the refactor of a high-demand Action-Pattern messaging platform. Async-offloaded sync bottlenecks via Redis queues (~8× throughput). Rebuilt subscription/payment flows (12% → 4% failed-tx). Shipped OTP verification + PDF invoicing. Contributor to the open-source Laravel SDK.

Oct 2023 — May 2025

Software Engineer · Future Group

Email Reader System · Giza, Egypt

Led a 2-developer team building an email-processing app. Cut response latency 92% (6s → 0.5s) via Redis caching, dockerized the stack to cut setup time 80%, and architected MVC + service layers around 20+ jobs/hour throughput.

Feb 2023 — Oct 2023

Software Engineer · Masasoft

Hotel Management System · Giza, Egypt

Built booking + check-in + payments with a 4-engineer team. 500+ monthly bookings, 25% faster check-in, 50+ optimized SQL queries, 40% drop in payment errors via stricter validation and idempotency.

/04 — contact

Hiring senior backend talent?

I'm open to senior backend / tech-lead roles worldwide — remote or relocation, with visa sponsorship. If you're working on payments, multi-tenant SaaS, or messaging infrastructure, let's talk.