About the job Java Integration Engineer
**Job Title:** Java Integration Engineer( Contractor)
**Location:** New York, NY, USA
**Experience Required:** 8 Years
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### **Key Responsibilities**
* Design, develop, and maintain backend services and integration layers using **Java**
* Implement and maintain **RESTful APIs** and **gRPC** interfaces to support application communication and external system integration
* Architect and develop **BFF (Backend-for-Frontend)** components tailored for different UI applications (web, mobile)
* Collaborate closely with frontend, cloud, DevOps, and product teams to deliver end-to-end solutions
* Ensure code quality, performance, and scalability through testing, code reviews, and performance tuning
* Troubleshoot production issues and support system reliability
* Follow best practices in software development, including CI/CD, unit testing, and containerization
* Contribute to architecture discussions and help shape future integration strategies
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### **Requirements**
* 8+ years of professional experience in **Java backend development**
* Strong hands-on experience with **REST API** design and implementation
* Experience with **gRPC**, protocol buffers, and service-to-service communication
* Proven experience in implementing **BFF** architecture and understanding of its benefits and trade-offs
* Solid knowledge of **microservices**, **API gateways**, and **integration patterns**
* Familiarity with container technologies (Docker, Kubernetes) and cloud platforms (AWS/GCP/Azure)
* Proficient with version control systems (**Git**, **GitHub**) and CI/CD pipelines
* Strong debugging, performance tuning, and system design skills
* Excellent communication and collaboration skills
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### **Preferred Qualifications**
* Experience with reactive programming frameworks (e.g., Spring WebFlux, RxJava)
* Familiarity with **Kafka**, **RabbitMQ**, or other messaging systems
* Exposure to **DevOps** tools and practices, including monitoring and observability (e.g., Prometheus, Grafana)
* Previous experience in **financial services**, **e-commerce**, or other high-volume transaction environments