The demand for high‑performance, event‑driven backend systems has never been higher, especially as businesses shift to microservice architectures. A senior Java developer role that focuses on Spring Boot, Kafka, and MongoDB offers a chance to shape scalable services at the core of modern applications. This contract position gives you the flexibility of a W2 arrangement while working with cutting‑edge technologies across multiple U.S. hubs.

Job Summary

We are seeking a seasoned Java engineer to design, build, and maintain scalable backend services. The role involves developing microservices, REST APIs, and event‑driven pipelines using Spring Boot, Kafka, and MongoDB, while ensuring high availability and performance in a cloud environment.

Top 3 Critical Skills Table

Interview Preparation

1. Explain how you would design a microservice that processes high‑volume Kafka streams.
   What the interviewer is looking for: Understanding of consumer groups, partitioning, fault tolerance, and back‑pressure handling.
2. Describe the steps to optimize MongoDB queries for a large dataset.
   What the interviewer is looking for: Index strategy, query profiling, schema design considerations, and sharding basics.
3. How do you implement circuit‑breaker patterns in Spring Boot applications?
   What the interviewer is looking for: Knowledge of resilience libraries (e.g., Resilience4j), fallback methods, and monitoring.
4. What are the trade‑offs between synchronous REST APIs and asynchronous event‑driven communication?
   What the interviewer is looking for: Insight into latency, coupling, scalability, and error handling.
5. Walk through a CI/CD pipeline you set up for deploying Java microservices.
   What the interviewer is looking for: Experience with containerization, automated testing, blue‑green or canary deployments, and tooling (Jenkins, GitHub Actions, etc.).

Resume Optimization

• Java
• Spring Boot
• Kafka
• Microservices
• REST APIs
• MongoDB
• Cloud (AWS/Azure/GCP)
• Event‑driven architecture
• CI/CD pipelines
• Performance optimization

Application Strategy

When reaching out to the recruiter, send a concise email that starts with a friendly greeting, attach your updated resume, and clearly highlight your top skills that match the role. Make sure to mention related skills you possess, such as Java, Spring Boot, and Kafka, and reference specific projects where you built scalable microservices or optimized database performance.

Career Roadmap