Java Full Stack Developer with MongoDB - W2 Position At Hartford, CT

Role Java Full Stack Developer with MongoDB

Multiple Locations Hartford, CT, Dallas TX, Chicago, IL

Must Have skill :MongoDB, Microservices, AWS, Lamda, Kafka, MongoDB, etc.

1. Designed, developed, and maintained high-performance Java applications using Java 8–17, Spring, Spring Boot, and Microservices architecture.
2. Architected and optimized MongoDB data models, indexes, and aggregation pipelines for large-scale, high-availability systems.
3. Led end-to-end development of RESTful and event-driven services, ensuring scalability, security, and performance.
4. Implemented distributed systems using MongoDB replica sets, sharding, and multi-region deployments.
5. Tuned application and database performance through profiling, query optimization, caching (Redis), and JVM tuning.
6. Integrated MongoDB with Java using Spring Data MongoDB, custom repositories, and transactional patterns where applicable.
7. Ensured data consistency and integrity across microservices using event sourcing, CQRS, and messaging systems (Kafka/RabbitMQ).
8. Developed secure APIs with OAuth2, JWT, role-based access control, and encryption best practices.
9. Led code reviews, technical design discussions, and mentoring of junior and mid-level developers.
10. Collaborated with DevOps teams to build CI/CD pipelines, containerized applications using Docker and Kubernetes, and supported cloud deployments (AWS/Azure/Google Cloud Platform).
11. Wrote and maintained unit, integration, and performance tests using JUnit, Mockito, and Testcontainers.
12. Worked closely with product owners and stakeholders to translate business requirements into technical solutions.
13. Ensured compliance with logging, monitoring, and observability standards using ELK, Prometheus, and Grafana.
14. Migrated legacy relational systems to MongoDB-based NoSQL architectures when appropriate.