Open to opportunities

Spencer User

@spenceruser1

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Senior PHP backend engineer delivering high-concurrency, reliable platforms.

Philippines

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What I'm looking for

I’m looking for a remote team where I can own backend architecture and performance—building idempotent, event-driven PHP systems with measurable business impact, strong code quality, and cross-time-zone collaboration focused on stability and continuous improvement.

I’m a senior PHP backend engineer with 12 years of full-stack and backend development experience, focused on building maintainable, high-performance systems. My work is centered on Laravel and Symfony, with full-stack experience using Vue, and a strong foundation in MVC architecture, dependency injection, and object-oriented design.

I thrive on coroutine-based and event-driven engineering—using Swoole, process models, asynchronous high-concurrency patterns, and WebSocket for low-latency delivery. In recent roles, I led architecture and feature delivery across game and payments ecosystems, designing idempotent and event-driven payment/deposit/withdrawal workflows with RabbitMQ, optimizing MySQL performance (indexing, slow-query analysis, and restructuring), and improving real-time data handling with Redis/RedisJSON and Elasticsearch for stability and measurable operational outcomes.

Experience

Work history, roles, and key accomplishments

Current

PHP Backend Team Leader

Current

Overseas Digital Entertainment Technology Company

Feb 2024 - Present (2 years 5 months)

Led architecture design and development of core PHP business systems for a mobile-first digital entertainment platform, spanning game lobby, user accounts, deposits/withdrawals (PIX), VIP, promotions, affiliate management, and operational reporting. Built and optimized multiple modules and payment workflows using event-driven processing, asynchronous queues, idempotency, retries, and financial rec

PHP Laravel Swoole Elasticsearch MySQL Redis RabbitMQ Nginx Linux Docker Dependency Injection Object Oriented Design Event Driven Architecture Retries Payment Processes Financial Reconciliations

PHP Backend Developer

Overseas Digital Entertainment Technology Company

Jul 2022 - Jan 2024 (1 year 6 months)

Refactored a legacy B2B system using Laravel and Swoole to move I/O-intensive workflows to coroutine-based asynchronous processing, improving throughput during event peaks. Built real-time data delivery and third-party data-stream integration with Swoole coroutines and WebSocket.