Smart Working is seeking a Senior PHP/Symfony Engineer to own backend development within a mature Symfony platform that handles marketing and revenue data for enterprise clients. You will drive the Symfony 6.x to 7 upgrade, work with Angular/TypeScript and Python AI microservices, and contribute to scalable, secure backend solutions. The role emphasizes autonomy, architecture mindset, and collaboration with a remote product squad, QA, and DevOps while adhering to SOC 2 and data protection