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Đức Phạm Doãn

@cphmdon

Full-stack software engineer building large-scale, production backend systems with Laravel/PHP and Node.js—plus React/Vue frontends.

Vietnam

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What I'm looking for

I’m looking for a full-stack/backend role where I can harden production systems at scale (payments, access control, audit), grow into AWS, and keep building AI/LLM features alongside React/Vue frontends.

I’m a Full-stack Software Engineer with 1+ year building and hardening a large-scale, production platform serving 600,000+ users. I specialize in backend architecture on Laravel/PHP and Node.js—payment pipelines, concurrency and transaction integrity, access control, and audit systems at scale—with React and Vue on the frontend.

I’ve shipped production reliability improvements for MySQL deadlocks and transaction-integrity failures, built idempotent “exactly-once” wage disbursement flows, and implemented end-to-end approval workflows with audit history and secure cloud file storage. I’m also hands-on with AI/LLM application development from a hackathon project and expanding into AWS cloud (DVA-C02 in progress) alongside a blockchain-focused Master’s.

Experience

Work history, roles, and key accomplishments

Full-stack Developer

Workforce Management & Staffing Platform

Built and hardened a 600,000+ user workforce management and on-demand staffing platform, delivering backend services (Laravel/PHP, Eloquent ORM, MySQL, Redis queues) and a React/Redux Toolkit worker app. Engineered idempotent same-day wage-payment pipelines, worker profile approval workflows, access control and platform-wide audit trails, and resolved MySQL deadlocks and transaction integrity issu

Eloquent ORM React Redux toolkit MySQL REST APIs Exactly Once Disbursements Access Control PDF OCR Integration