**Server\-side Engineer** Description We are looking for a Server\-side Engineer to work on Mobile application Service Layer (Backend for Frontend) that will be used by tens of millions of American Express cardholders around the world. We want someone with strong technical skills and creativity. Should enjoy solving tough problems and working with modern technologies. You should not be shy about sharing your ideas and be obsessive about user experience and beautiful code. You will be part of the Mobile Engineering team whose mandate is to develop new products and platforms for American Express customers. Mobile Engineering’s aim is to build interactive experiences at all touch points of a consumer's journey whether before, at, or after the time of purchase. You will be working in a large team of engineers, product people, designers, and QA to build the “Backend for Frontend” API layer consumed by Award\-winning American Express mobile apps. Based on experience, this role may be entry level, senior or staff. Relevant experience and skills:* Building server\-side applications * Writing code * Refactoring code * Deleting code * Build tools * Continuous Integration * Fixing bugs * Asynchronous code * Performance Analysis and Optimization * Legacy Code * Unit tests * Open Source * Working in a team * Self\-starting * Integrating with bespoke lovingly hand\-crafted backend services from the days of yore * Designing solutions for open ended problems * Bachelor’s degree in Computer Science or related field, or equivalent experience Relevant technologies that you may encounter:* Kotlin * Gradle * REST * GQL * RAML Kindly share English profile only, with Gross Salary Expectations in Argentina Pesos