Senior Java Backend Developer – Reactive Systems & GenAI
Applab Systems Inc · Posted Nov 13, 2026
- Austin, Texas, United States
- On-site
- Contract · Senior
- 8+ years
We are looking for an experienced Senior Java Backend Developer with strong expertise in Advanced Java, Reactive Programming, Spring Boot, Spring WebFlux, Kafka, and NoSQL databases such as Couchbase and MongoDB. The ideal candidate should have hands-on experience designing and developing scalable, high-performance, event-driven and reactive applications.
Responsibilities
- Design, develop, and maintain scalable backend applications using Advanced Java and Spring Boot.
- Implement reactive and non-blocking applications using Spring WebFlux and Reactive Programming.
- Apply Java Functional Programming concepts, including Lambda Expressions, Streams API, and Functional Interfaces.
- Develop event-driven and distributed applications using Apache Kafka.
- Design and manage NoSQL database solutions using Couchbase and MongoDB.
Requirements
- Nice to have: Generative AI (GenAI)
- Nice to have: Claude Code
- Nice to have: Microservices architecture
- Nice to have: REST APIs
- Nice to have: CI/CD pipelines