As a Senior PHP Back-End Developer at SiteGround, you will be instrumental in developing robust, scalable RESTful API backends for our innovative Software as a Service (SaaS) products. You will work in close collaboration with developers, product managers, QA, and DevOps engineers, participating in the entire development lifecycle from conceptualization to deployment. Your responsibilities include developing and maintaining high-quality applications using best practices and design patterns, writing clean and testable code, participating in code reviews, and continuously expanding your knowledge of software architecture and new technologies. Required expertise includes PHP 8.0+, OOP, Symfony or other PHP frameworks, relational databases such as MySQL or PostgreSQL, RESTful API design, SOLID principles, design patterns, Git, and PHPUnit. Additional advantages include experience with API Platform, job/message queues (Kafka, Redis Queue, RabbitMQ), Linux-based OS, Docker, Websockets, CI/CD pipelines, HTML5, CSS3, cloud services (AWS, Azure, GCP), JavaScript frameworks, and professional certification. The role offers competitive salary with achievement bonus, premium health insurance, reduced working hours every Friday, sponsorship for worldwide conferences, free office restaurant, gym access with professional instructors, free fitness classes, Multisport or CoolFit card, additional days off for service and volunteering, anniversary and company gifts, and knowledge-sharing events. This position suits professionals passionate about efficient server-side logic and innovation in a fast-paced environment.