SeniorBackendEngineer

### Your Challenge The Backend Engineer is responsible for the system to work behind the scenes. The role is to integrate the application with all required systems and services and provide clean and easy-to-use API for the frontend part of the system. Although the work is usually hidden from the user, the Backend Engineer bears the full responsibility for the application functionality, performance and scalability. The Backend Engineer knows how to write clean modern APIs, integrate with legacy systems and work with databases * Design and develop the business logic and backend systems of the product * Work closely with frontend developers to design and develop functional, performing and complete APIs * Decipher existing companies software systems and be able to hook in application to applicable data sources * Write both unit and integration tests, and develop automation tools for daily tasks * Develop high quality, well documented, and efficient code * Challenge ideas and opinions to avoid pitfalls and inefficient solutions **Requirements** * You have experience as a backend engineer in common languages and frameworks, e.g., Java, Node Js, ExpressJS, NestJS or any other JS framework * You have experience in AWS * You have experience in GraphQL * You have deep knowledge of object-oriented programing and engineering principles such as SOLID * You have significant experience writing and utilizing autonomous services-oriented restful API services and performance tuning largescale apps * You have experience with database systems, with knowledge of SQL and NoSQL stores, e.g., MySQL, MongoDB, Redis, Postgres * You are able to write effective unit, integration, and API tests. It is a plus if you experience integrating with JavaScript frameworks, such as React **Benefits** * Full social insurance and housing fund * Year-end bonus * Phone allowance * Transportation allowance ### Best Culture * Clear focus. * Diverse Workplace (Our members are from around the world!) * Non-hier