Expert Backend Developer for Mission-Critical Systems

6 days ago


Manama, Manama, Bahrain Citigroup Inc. Full time
Job Description
Citigroup Inc. is seeking a skilled Sr. Backend Developer to join our team.

About the Role
The Senior Backend Developer is an intermediate level position responsible for participating in the establishment and implementation of new or revised application systems and programs in coordination with the Technology team.

Key Responsibilities
* Design and develop high-volume, low-latency backend applications for mission-critical systems, ensuring high availability and performance.
* Write well-designed, testable, and efficient code, and perform code refactoring to maintain code quality.
* Work proactively and independently to address project requirements, identify performance bottlenecks, and optimize system performance.

Requirements
* 5+ years of hands-on experience in Java development.
* Strong knowledge of OOP principles and design patterns.
* Experience with RESTful and SOAP APIs, microservices, and distributed systems.
* Solid understanding of SQL/No SQL databases (e.g., MySQL, PostgreSQL, MongoDB).
* Experience with Spring Boot for building microservices.
* Strong understanding of multithreading, concurrency, and memory management in Java applications.
* Experience with unit testing frameworks (JUnit, TestNG) and test automation tools.
* Experience working in Agile development environments.

Preferred Skills
* Familiarity with cloud environments (AWS, Azure, GCP) and containerization (Docker, Kubernetes)
* Knowledge of message brokers like Kafka, RabbitMQ, or ActiveMQ.
* Familiarity with security best practices for Java applications.
* Contributions to open-source Java projects or active involvement in the Java developer community is a plus.

Education
Bachelor's degree/University degree or equivalent experience.

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