Backend Engineer Kotlin

You will design, develop and optimize backend services and APIs using Kotlin or Java. You will build scalable microservices, optimize SQL/NoSQL databases, implement RESTful or gRPC APIs, deploy to cloud environments using Docker and Kubernetes, write unit and integration tests, identify and resolve performance bottlenecks, and collaborate closely with frontend, product and QA teams. You should be based in Shenzhen and be available for occasional travel to Hong Kong.

Responsibilities

Develop backend APIs and services using Kotlin or Java
Design system architecture ensuring scalability and performance
Optimize SQL and NoSQL databases for efficient data access
Design and build RESTful or gRPC APIs
Implement scalable microservices and deploy using Docker and Kubernetes
Identify and resolve system performance bottlenecks
Write unit and integration tests to ensure code stability
Collaborate with frontend, product and QA teams

Requirements

3+ years of Kotlin or Java backend development experience
Experience with Spring Boot, Ktor or similar frameworks
Proficiency with PostgreSQL, MySQL, MongoDB or Redis
Familiarity with RESTful API, GraphQL or gRPC design and development
Experience with microservices, Docker, Kubernetes and cloud deployment (AWS, GCP or Azure)
Knowledge of multithreading, asynchronous programming and message queues (Kafka, RabbitMQ)
Good English communication skills for collaborating with international teams
Currently residing in Shenzhen or nearby and able to travel to Hong Kong as needed

Benefits

Remote work option
Access to Hong Kong office
Flexible work arrangements