Seeking a full-time Back End Developer, the candidate will design, build, and scale backend services in Node.js and PHP for Atmosfy's consumer platform, collaborating closely with the engineering team to enhance user experiences for millions of travelers and creators worldwide. Key Responsibilities Develop, test, and maintain robust and scalable applications Own core APIs end-to-end, from schema design to monitoring and performance iteration Collaborate with front-end developers to integrate user-facing elements with server-side logic Required Qualifications 5+ years of professional backend experience with expertise in Node.js and PHP Strong experience with relational databases such as MySQL or PostgreSQL Proven experience designing and operating RESTful APIs for mobile and web clients Familiarity with AI tools as part of the development workflow Proficiency with Git and collaborative development workflows