We are seeking a highly skilled Java Middleware Engineer to design, develop, and maintain our enterprise integration platforms and middleware solutions. In this role, you will be responsible for building high-performance, scalable, and secure backend integration layers that connect disparate enterprise systems, databases, and third-party services.
You will focus on API development, messaging systems, and application server configuration, ensuring seamless data flow, high availability, and low latency across our enterprise application ecosystem.
Key Responsibilities
- Integration & API Development: Design and develop robust, secure, and scalable RESTful APIs, SOAP web services, and microservices using Java and the Spring Boot framework.
- Messaging & Event Streaming: Implement and manage asynchronous messaging and event-driven architectures using technologies such as Apache Kafka.
- Middleware Administration & Configuration: Configure, deploy, and tune middleware application servers (e.g., Apache Tomcat, Oracle WebLogic) to ensure optimal performance and reliability.
- System Integration: Connect legacy systems, modern cloud applications, and databases, ensuring data integrity, transaction management, and proper error handling across integration points.
- Security Implementation: Implement enterprise-grade security standards, including SSL/TLS encryption, OAuth2, JWT, and secure API gateways.
- Performance Tuning & Troubleshooting: Diagnose and resolve complex middleware bottlenecks, memory leaks, thread dumps, and connection pool issues in production and non-production environments.
Technical Skills & Qualifications
Required:
- Java Expertise: Deep understanding of Core Java (Java 8/11/17), multithreading, concurrency, and JVM internals.
- Frameworks: Strong experience with Spring Boot, Spring MVC, Spring Security, and Spring Integration or Apache Camel.
- Messaging Systems: Hands-on experience with enterprise messaging middleware, specifically IBM MQ, Apache Kafka, or RabbitMQ.
- Application Servers: Experience deploying and configuring applications on Apache Tomcat, Oracle WebLogic, or JBoss.
- Web Services & Protocols: Strong proficiency in REST, SOAP, JSON, XML, and HTTP/HTTPS protocols.
- Database Integration: Solid understanding of SQL, JDBC, and ORM frameworks like Hibernate/JPA.
Preferred:
- Experience with containerization and orchestration
- Familiarity with CI/CD pipelines (Git, Jenkins, Bitbucket).
- Knowledge of API Gateway solutions
Experience & Education
- Education: Bachelor’s degree in Computer Science, Software Engineering, Information Technology, or a related technical field.
- Experience:
- 3+ years of professional experience in software engineering with a strong focus on Java-based middleware, backend integration, or enterprise application development.
- Proven experience troubleshooting application servers and messaging queues in high-transaction environments.
------------------------------------------------------
Job Family Group:
Technology------------------------------------------------------
Job Family:
Applications Development------------------------------------------------------
Time Type:
Full time------------------------------------------------------
Most Relevant Skills
Please see the requirements listed above.------------------------------------------------------
Other Relevant Skills
For complementary skills, please see above and/or contact the recruiter.------------------------------------------------------
Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.
If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi.
View Citi’s EEO Policy Statement and the Know Your Rights poster.
Sign in
To continue your applicationor continue with email
By continuing you agree to our Terms & Privacy Policy.
