Piero R.

I'm a Senior Software Engineer and Tech Lead with 10+ years building production-grade PHP/Symfony systems — from clean microservices to complex DDD backends with event sourcing, CQRS, and hexagonal architecture. I've worked across the full stack: APIs with API Platform, React Native mobile apps, Docker-based infrastructure, CI/CD pipelines, and observability setups. I know how to take a codebase from technical debt chaos to a well-structured, testable, scalable system. Some concrete results from recent roles: • Reduced GraphQL response payloads by 40% at Svitla Systems, cutting load times and improving UX. • Improved P99 performance by 70% at WeKnow through query optimization and custom EasyAdmin components. • Led a Symfony/PHP version migration at Chargebacks911, improving delivery speed and reducing bug rate. • Drove lead time under 5 days and time-to-market down to 1 week at Aper with AI-assisted code review (CodeRabbit) and static analysis tooling. • Designed a RabbitMQ-based messaging architecture at Linio that handled marketplace notifications with resilience and fault tolerance. I apply SOLID principles, write tests (PHPUnit, PHPSpec, Behat), and integrate tools like PHPStan (level 9), Rector, and ECS from day one — not as afterthoughts. If you need someone who ships clean, maintainable code and also understands the bigger picture (architecture, team workflows, CI/CD), let's talk.