Senior Java Microservices Engineer - Reactive & Kafka

Quantum Technologies. LLC; Las Vegas (NV); On-site; USD 110,000 - 160,000; Full time

Job summary

Quantum Technologies LLC in Las Vegas, NV is seeking an experienced Java Microservices Developer to join the Credit One Bank project. The role focuses on building scalable backend services, REST APIs, and reactive applications within a modern cloud environment.

You will work with Spring Boot, Kafka, API Gateway, and Config Server, delivering robust microservices and automated tests. Candidates should have 7-8 years of Java experience and a strong architecture mindset.

Qualifications

• 7–8 years of experience in Java development.
• Strong experience with Java microservices architecture.
• Hands-on REST API development.
• Experience with Reactive Frameworks and Reactive Programming.
• Strong knowledge of Spring Framework and Spring Boot.
• Experience with Apache Kafka and/or RabbitMQ.
• Understanding of API Gateway and Config Server.
• Experience with AWS or any other cloud platform.
• Experience writing and executing Unit Tests (UTs).

Responsibilities

• Develop and maintain Java-based microservices and REST APIs.
• Design and implement reactive applications using reactive programming frameworks.
• Build and maintain messaging integrations using Apache Kafka or RabbitMQ.
• Work with Spring Boot, API Gateway, and Config Server.
• Develop, test, and troubleshoot application components.
• Write and execute unit tests to ensure code quality.
• Collaborate with technical teams to deliver scalable backend solutions.

Skills

Java

Microservices

REST APIs

Reactive programming

Spring Framework

Unit testing

AWS cloud

Tools

Kafka

RabbitMQ

API Gateway

Config Server

Job description

Quantum Technologies LLC in Las Vegas, NV is seeking an experienced Java Microservices Developer to join the Credit One Bank project. The role focuses on building scalable backend services, REST APIs, and reactive applications within a modern cloud environment.

You will work with Spring Boot, Kafka, API Gateway, and Config Server, delivering robust microservices and automated tests. Candidates should have 7-8 years of Java experience and a strong architecture mindset.