Developer (Senior-level) (f/m/x) Join, learn, and collaborate with our backend engineering team in building..start-up in the field of Fintech and Edtech and currently has a vacancy for the position as Kotlin/Java Backend..unit tests, integration tests, and end-to-end tests to ensure the robustness and reliability of the backend..years of professional experience as a Full-stack Engineer, with proficiency in Kotlin or Java 8+ for backend