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Mohammad Alhallaq

@mohammadalhallaq

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Backend-focused Full-Stack Developer specializing in scalable APIs and high-throughput systems.

Syrian Arab Republic

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What I'm looking for

I want a backend-focused role where I can own API architecture and high-throughput systems, optimize databases, and improve reliability with strong observability. I thrive in teams that value clean design, performance, and measurable results.

I’m a backend-focused Full-Stack Developer with 6+ years of experience in PHP, Go, and Laravel. I specialize in API architecture, database optimization, and building high-throughput systems at scale, with a strong bias toward performance, reliability, and clean system design. As an active open source contributor, I enjoy shipping improvements that help real users—especially around speed and stability.

In my most recent role at Stemless, I designed and implemented real-time messaging and notification systems to improve customer-vendor engagement, and architected a high-throughput message processing system using Laravel queues and batch jobs to sustain 500k+ messages on peak days. I also reduced query latency by optimizing indexing strategies, scaled POS integrations (Meadow, Shopify) into core workflows, and improved observability and stability using Laravel Horizon for queue monitoring. Previously, I built production-grade APIs with 80%+ automated test coverage, migrated high-volume logs to MongoDB to improve scalability, and implemented payment integrations across major stores.

Experience

Work history, roles, and key accomplishments

Backend Software Developer

Stemless

Nov 2023 - Feb 2026 (2 years 3 months)

Designed and implemented real-time messaging and notification systems to improve customer–vendor engagement. Architected high-throughput message processing with Laravel queues and batch jobs (500k+ peak-day messages), optimized database queries to reduce latency, and improved queue observability using Laravel Horizon.

Laravel Queues Batch Query Optimization Laravel Horizon Observability High Throughput Systems

Full-Stack Web Developer

Majarra

Mar 2022 - Nov 2023 (1 year 8 months)

Designed and maintained production-grade APIs with 80%+ automated test coverage. Built an event-tracking pipeline and data warehouse, migrated high-volume logs to MongoDB for improved scalability and query performance, integrated mobile payment services, and connected Lableb search for faster in-app discovery.

REST APIs Automated Testing Data Warehousing MongoDB Google Play Billing

Back-End Web Developer

E-Technocode

Sep 2021 - Feb 2022 (5 months)

Built and maintained RESTful APIs for a B2C ordering platform, handling product listings, order management, and status tracking. Identified and resolved API bottlenecks in collaboration with frontend teams, improving response consistency.

REST API Development

Back-End Web Developer

Runnet

Nov 2020 - Aug 2021 (9 months)

Led a full migration of a legacy CRM from CodeIgniter to Laravel, modernizing the codebase and improving maintainability. Refactored data models and reporting logic to eliminate inconsistencies and improve internal business report accuracy.

Laravel CodeIgniter CRM Systems Refactoring

Full-Stack Web Developer

MGS Software

Oct 2018 - Nov 2019 (1 year 1 month)

Designed and developed RESTful APIs consumed by Vue.js frontend applications, covering authentication, data management, and third-party integrations. Built reusable, interactive Vue.js UI components to improve frontend consistency and development speed across projects.

REST API Development Vue.Js Authentication JavaScript Component Development Third Party Integrations Design Consistency