Back End Developer

CallApp is looking for a talented, top-notch senior backend developer with very high programming and design skills.
From designing the architecture, coding, deployment, monitoring and troubleshooting all backend related services serving our multi-millions users daily.

Requirements:
3+ years of experience in backend development.
Proficiency in Java programming and the Spring Framework - MUST.
Experience with Swift programming - MUST.
Experience with RESTful services and NoSQL databases.
Familiarity with cloud platforms (AWS and GCP) is a plus.
Experience with Spark and Cassandra is a plus.

Responsibilities:
Design, develop, and maintain over 50 backend servers using Java, Spring and Swift.
Collaborate with client side developers to integrate user-facing elements with server-side logic.
Develop and maintain backend services for our Android app and iOS app and back office services.
Optimize application performance, focusing on speed and scalability.
Write clean, maintainable, and testable code, following best practices for software development.
Troubleshoot and resolve production issues, ensuring the stability and reliability of the backend systems.
Stay up-to-date with the latest industry trends and technologies to continuously improve our systems.