Radek A.

I’m a senior backend / platform engineer with 15 years of commercial experience, specialising in fintech, payment systems, and high-reliability backend platforms. I design and build scalable, maintainable PHP systems used in real production environments: card payments, transaction processing, third-party integrations, and internal platforms that must be correct, observable, and resilient. Most of my recent work is in regulated fintech environments, where failure, data inconsistency, or unclear ownership is simply not acceptable. My core strength is backend architecture, not just writing code: - clear domain boundaries - well-designed APIs - event-driven and asynchronous systems - pragmatic use of microservices or modular monoliths - strong focus on testability and long-term maintainability What I typically help clients with: - Designing and implementing backend systems in PHP (Symfony / Laravel / Laminas) - Building APIs and integration layers (payments, external providers, internal services) - Introducing or improving software architecture (DDD-style modelling, CQRS where it makes sense) - Modernising legacy PHP codebases without rewriting everything from scratch - Setting up or improving CI/CD, testing, and deployment workflows - Improving reliability, observability, and fault tolerance in production systems Technologies I work with daily: PHP, Symfony, Laravel, Laminas, MySQL, PostgreSQL, Redis, RabbitMQ, Docker, Kubernetes, AWS, REST APIs, event-driven systems, automated testing, CI/CD. How I work: I’m direct, pragmatic, and focused on outcomes. I ask questions early, challenge unclear requirements, and care about delivering systems that are easy to reason about and safe to evolve. I’m comfortable working independently or as part of an experienced engineering team. If you need a senior backend engineer who can think architecturally and execute reliably, let’s talk.