Senior Backend Developer for High-Performance Systems
6 days ago
Citigroup, Inc. is seeking an experienced Senior Backend Developer to join our team.
The Senior Backend Developer will play a key role in the establishment and implementation of new or revised application systems and programs, working closely with the Technology team to contribute to applications systems analysis and programming activities.
Responsibilities include:
• Designing and developing high-volume, low-latency backend applications for mission-critical systems, ensuring high availability and performance.
• Writing well-designed, testable, and efficient code, and performing code refactoring to maintain code quality.
• Working proactively and independently to address project requirements, identify performance bottlenecks, and optimize system performance.
• Implementing and maintaining RESTful and SOAP APIs, microservices, and distributed systems.
• Participating in agile development processes, including sprint planning, stand-ups, and retrospectives.
Requirements include:
• 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., My SQL, Postgre SQL, Mongo DB).
• Experience with Spring Boot for building microservices.
• Strong understanding of multithreading, concurrency, and memory management in Java applications.
• Experience with unit testing frameworks (JUnit, Test NG) and test automation tools.
• Experience working in Agile development environments.
• Excellent problem-solving skills and the ability to handle complex technical challenges.
• Self-driving, strong communication and collaboration skills.
PREFERRED SKILLS
Familiarity with cloud environments (AWS, Azure, GCP) and containerization (Docker, Kubernetes)
Knowledge of message brokers like Kafka, Rabbit MQ, or Active MQ.
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.
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