Java Developer Messenger

Messenger is one of the most high-load services at Kaspi.kz. We are responsible for all messages sent to clients via push notifications and SMS. A large number of business processes are tied to SMS codes, which is why we are working to ensure the service is always available and our clients can receive their messages even during technical disruptions. Alongside technical improvements, the service is also gaining business features, which will prevent boredom.

Technology Stack:

• Programming Languages: Kotlin + coroutines
• Databases: Oracle, SQL Server, JDBI
• Integration: REST, JMS, Kafka
• Distributed Cache: Redis
• Monitoring: Prometheus, ELK
• DI: Spring Core (beans.xml)
• Server: Netty + Jersey

What you will be doing:

• Participating in the creation of new services and supporting existing ones;
• Improving the performance and fault tolerance of current functionality;
• Making independent decisions during the work process;
• Suggesting ideas on how to make the service even better;
• Focusing on product development, which means solving business problems;
• Communicating with clients;
• Working in a team.

Will be a plus:

• Experience working with a high-load service
• Solid knowledge of databases
• Multithreading skills
• Experience with monitoring setup and understanding