HZ Hassan Zeaiter
EST. LEBANON VOL. 1 / 2026

HASSAN ZEAITER

Engineering Team Lead @ OLX Lebanon — software & product engineer architecting scalable systems and infrastructure across PHP, Go, Python & JS/TS, now going deep on data, ML & AI engineering.

See the work → Get in touch
  • 13+Years building
  • 20+Products shipped
  • ∞Cups of coffee
HZ The Chronicle · — contributions →
01

The Editorial

Self-taught engineer, product-minded, and stubborn about shipping. I've been building for the web since 2011 — and today I lead engineering at OLX Lebanon.

I started out freelancing in 2011, moved into company roles by 2015, and in 2020 co-founded Codeminos, a dev studio, right through Lebanon's economic collapse — we delivered several large-scale products before the country's instability forced us to close. I'm a polyglot engineer — PHP/Laravel, Go, Python and the JS/TS world (Node, React, React Native) — but what I really do is architecture: product, system and infrastructure design, and fast, reliable services.

At OLX I'm spearheading an end-to-end architectural rebuild and leading a cross-functional team across mobile, frontend and QA — turning product goals into architecture, sprint plans and shipped features. My focus is now shifting toward data & AI engineering — data pipelines, ML, and LLM-powered features — plus the infrastructure that makes them production-ready.

  • Now Engineering Team Lead, OLX Lebanon
  • Focus Architecture · Data · ML/AI
  • Learning Data & ML engineering
  • Based Beirut, Lebanon · Remote-friendly
02

The Toolkit

Architecture

  • Product architecture
  • System design
  • Infra architecture
  • Microservices
  • Multi-tenancy
  • Distributed systems

Languages

  • PHP
  • Go
  • Python
  • TypeScript
  • JavaScript
  • SQL

Frameworks & Runtime

  • Laravel
  • Node.js
  • React
  • Next.js
  • React Native
  • Livewire

Data & AI

  • Data engineering
  • Pipelines & dbt
  • ML / AI engineering
  • LLMs & agents
  • Prompt engineering
  • Analytics / BI

Infra & DevOps

  • Docker
  • Terraform
  • CI/CD
  • Nginx
  • Cloud
  • Observability

Data Stores

  • MySQL
  • PostgreSQL
  • Elasticsearch
  • Redis
  • Schema design

Leadership & Craft

  • Team building
  • Mentorship
  • Code & architecture review
  • Product thinking
03

The Résumé

  1. NOW

    Engineering Team Lead · OLX Lebanon · Jun 2025 — Present

    Spearheading the end-to-end architectural rebuild of the OLX Lebanon ecosystem for scale and reliability. Lead a cross-functional team (mobile, frontend, QA), drive core tech decisions, and tune Elasticsearch to serve fast search across millions of listings.

  2. 2023

    Product Engineer / Senior Backend · Qualizone · Mar 2023 — May 2025

    Built and maintained scalable APIs powering web and mobile apps, mentored junior devs, led code reviews, and shaped product direction and architecture with the product manager.

  3. 2022

    Co-Founder & Tech Lead · Nakrashat · Oct 2022 — Jun 2024

    Co-founded and led the tech for Nakrashat — a mobile app delivering imported and local snacks. Owned the product's technical direction from architecture to launch.

  4. 2020

    Co-Founder & CTO · Codeminos · Feb 2020 — Feb 2023

    Co-founded a dev studio through Lebanon's economic crisis. Owned technical strategy and backend/API delivery for Gulf & Lebanon clients — e-commerce, delivery, POS and SaaS products.

  5. 2019

    API Developer · Barq App (KSA) · Aug 2019 — Feb 2020

    Six-month contract building core backend for Barq, a fast-growing Saudi courier & logistics app — order handling, courier tracking and delivery workflows.

  6. 2018

    Senior Backend Developer · IdeaToLife · Mar 2018 — Jun 2019

    Built APIs, CMSs and full web solutions across many clients, mentored juniors, and helped align tech choices with business goals.

  7. 2016

    Fullstack Web Developer · LibanCall Plus · Sep 2016 — Feb 2018

    First developer in a newly formed tech department — built and maintained full-stack apps, and grew into mentorship and light management as the team expanded.

Want the full story? Connect on LinkedIn ↗

04

The Portfolio

№ 01 · OLX Lebanon

Platform Rebuild

End-to-end architectural rebuild of the OLX Lebanon ecosystem — future-proof system design and Elasticsearch clusters delivering ultra-fast search & filtering across millions of live listings.

  • PHP
  • Elasticsearch
  • Architecture
  • Scale
Details on request →
№ 02 · Tech Lead · 6-mo contract

Diggipacks

A warehousing & logistics SaaS — inventory and warehouse management with first-mile and last-mile flows, integrated with major Saudi payment and courier systems.

  • Laravel
  • SaaS
  • Warehousing
  • Logistics
Details on request →
№ 03 · Tech Lead · 2-mo contract

COFEE

A coffee-shops delivery marketplace — a mobile app in the Gulf. Joined the team for a full re-platforming of the product on a focused 2-month contract.

  • Mobile
  • Marketplace
  • API
  • Re-platform
Details on request →
№ 04 · Co-Founder & Tech Lead

Nakrashat

A mobile app delivering imported and local snacks — co-founded and led end-to-end: CMS, API and iOS / Android apps, from planning to launch.

  • React Native
  • API
  • CMS
  • Delivery
Visit nakrashat.com ↗

A selection of the work — see all works →

05

Let's make
something.

Open to interesting problems, collaborations and conversations about Laravel, React and AI.

hassanzeaiter.20.10@gmail.com
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