Java Backend Engineer - Microservices & API Powerhouse

Quantum Technologies. LLC; Omaha (NE); On-site; USD 81,000 - 109,000; Full time

Job summary

Quantum Technologies LLC is seeking a Java Backend Engineer to design, develop, and maintain highly available microservices for healthcare data exchange and platform capabilities in Omaha, NE. The role emphasizes Java/JEE, Spring Boot, Node.js, RESTful APIs, Apache Kafka, and CI/CD practices.

The ideal candidate will implement secure, scalable backend solutions, apply 12-Factor principles, IaC, and DevOps practices while collaborating with Product, Security, and Operations teams to ensure

Qualifications

• Strong experience in Java/JEE and Spring Boot.
• Hands-on experience with Node.js.
• Strong knowledge of RESTful API development and integration.
• Experience with Apache Kafka and event-driven architecture.
• Strong understanding of JSON, data validation, and versioning.
• Experience with CI/CD pipelines and DevOps practices.
• Knowledge of application security practices, including SAST and DAST.
• Understanding of 12-Factor Application Principles.
• Experience with Infrastructure as Code (IaC) and Configuration Management.

Responsibilities

• Design, develop, and maintain backend microservices using Java/JEE, Spring Boot, and Node.js.
• Develop secure, scalable, high-performance, and resilient RESTful APIs.
• Implement event-driven architectures using Apache Kafka, including producers, consumers, schema evolution, partitioning, and consumer groups.
• Work with JSON for data modeling, validation, versioning, and backward compatibility.
• Build and maintain CI/CD pipelines covering unit testing, integration testing, static analysis, and deployment automation.
• Integrate security controls such as SAST, DAST, dependency scanning, image scanning, and secrets management.
• Apply 12-Factor Application Principles, Infrastructure as Code (IaC), and configuration management best practices.
• Collaborate with Product, Architecture, Security, and DevOps teams to deliver reliable backend solutions.
• Ensure application performance, security, availability, and compliance across healthcare integrations.

Tools

Java/JEE

Spring Boot

Node.js

RESTful APIs

Apache Kafka

CI/CD

JSON

SAST

DAST

IaC

Configuration Management

12-Factor Principles

DevOps

Job description

Quantum Technologies LLC is seeking a Java Backend Engineer to design, develop, and maintain highly available microservices for healthcare data exchange and platform capabilities in Omaha, NE. The role emphasizes Java/JEE, Spring Boot, Node.js, RESTful APIs, Apache Kafka, and CI/CD practices.

The ideal candidate will implement secure, scalable backend solutions, apply 12-Factor principles, IaC, and DevOps practices while collaborating with Product, Security, and Operations teams to ensure