Senior Java Backend Engineer | Microservices & REST APIs

Quantum Technologies. LLC; Columbus (OH); On-site; USD 120,000 - 150,000; Full time

Job summary

Quantum Technologies. LLC seeks an experienced Java Backend Developer to design, develop, and maintain scalable, secure backend applications in an enterprise banking environment. The role focuses on Core Java, Spring Boot, microservices, REST APIs, and distributed systems.

Candidates with JPMorgan Chase experience are preferred, especially those familiar with large-scale production banking systems. You'll collaborate across engineering, QA, DevOps, and product teams in an Agile setting.

Qualifications

• Experience designing backend systems in Java using Spring Boot.
• Strong knowledge of RESTful APIs, microservices, and distributed architectures.
• Proficient SQL skills with relational databases like Oracle, PostgreSQL, or MySQL.

Responsibilities

• Design, develop, test, and maintain backend applications using Java and Spring Boot.
• Build and maintain RESTful APIs and integrate with enterprise systems.
• Apply OOP, design patterns, and best coding practices.
• Develop scalable, resilient services with proper logging and error handling.
• Write and optimize SQL queries; work with relational databases.
• Implement asynchronous messaging with Kafka and related tooling.
• Write tests with JUnit/Mockito and participate in reviews and CI.
• Troubleshoot issues, perform root-cause analysis, and support releases.
• Collaborate with architects, QA, DevOps, and product owners; participate in Agile ceremonies.
• Adhere to security standards and software development lifecycle processes.

Skills

Core Java

Spring Boot

Microservices

REST APIs

SQL

Apache Kafka

JUnit

Mockito

Git

Maven/Gradle

Docker

Kubernetes

AWS

JVM fundamentals

Education

Bachelor's degree in Computer Science, Information Technology, Engineering, or related field

Tools

Oracle

PostgreSQL

MySQL

Kafka

Git

Maven

Gradle

Docker

Kubernetes

AWS

Jenkins

SonarQube

Job description

Quantum Technologies. LLC seeks an experienced Java Backend Developer to design, develop, and maintain scalable, secure backend applications in an enterprise banking environment. The role focuses on Core Java, Spring Boot, microservices, REST APIs, and distributed systems.

Candidates with JPMorgan Chase experience are preferred, especially those familiar with large-scale production banking systems. You'll collaborate across engineering, QA, DevOps, and product teams in an Agile setting.