Aleksey N.

Senior PHP architect specializing in payment systems, DDD migrations, and high-load backends. 10+ years in PHP, with a focus on production systems where reliability is non-negotiable. 🎯 What I do best ▸ Payment system architecture Building production-grade billing systems with Stripe, Stripe Connect, and multiple alternative payment service providers — payment gateway integration, subscription billing, recurring payments, idempotent webhook handling, 3D Secure / SCA, refund and chargeback flows, retry policies, fraud signals, full audit logs, PCI-aware design. If your project involves payment integrations that must not break under load, I've already debugged most of the failure modes. ▸ Symfony / Laravel DDD migrations Taking legacy fat-controller codebases to clean Domain / UseCase / Flow / Repository structure without breaking production. Phased migrations using Symfony Messenger, AMQP, and event-driven architecture. Strong opinions on rich-model entities, bounded contexts, CQRS, hexagonal / clean architecture, and where Service ends and UseCase begins. Comfortable with monolith decomposition, refactoring, and tech debt prioritization. ▸ Event-driven backends at scale Symfony Messenger, RabbitMQ, Redis, transactional event dispatch (dispatchTx → commit → stream pattern). Reliable delivery semantics, idempotent handlers, retry with exponential backoff, dead letter queues, observability built in from day one. 🛠 Stack • PHP 8.2+ • Symfony 6/7 • Laravel 10/11 • API Platform • Doctrine ORM + DBAL • Eloquent • PostgreSQL • MySQL / MariaDB • Redis • RabbitMQ • Symfony Messenger • Laravel Horizon • Stripe API • Stripe Connect • OAuth 2.0 • JWT • REST APIs • OpenAPI / Swagger • PHPUnit • Pest • Docker • GitHub Actions • GitLab CI • Git / GitFlow 🤝 How I work I'd rather spend an hour discussing the architecture and ship the right thing, than push code in 30 minutes that gets rewritten next quarter. Async-friendly, proactive communication, small reviewable PRs, code reviews welcomed and given. I work directly with founders, CTOs, and engineering teams — not through agencies. 💼 Often hired for Stripe integration • subscription billing systems • payment gateway integration • Symfony architecture review • Laravel refactoring • DDD migration • monolith decomposition • event-driven architecture • RabbitMQ / Messenger setup • API design • high-load backend optimization • database query optimization • PHP code review • technical due diligence • mentoring PHP engineers