Petro Velychko is a freelance software engineer and consultant with more than 25 years of experience building backend systems in enterprise environments. His expertise spans Java, Kotlin, and software architecture, with a focus on scalable, maintainable, and business-driven solutions. Throughout his career, he has helped teams modernize legacy platforms, improve architectural clarity, and apply pragmatic engineering practices. He actively works with the modern JVM ecosystem and builds event-driven systems for production environments.