Senior Java Backend Architect

Quantum Technologies. LLC; Cincinnati (OH); On-site; USD 99,000 - 141,000; Full time

Job summary

Quantum Technologies. LLC is seeking a Principal Java Backend Software Engineer to design, build, and scale backend services in a fast-paced environment.

You will guide architecture decisions and lead agile squads while delivering high-quality code and robust APIs. The role requires expert Java and Spring experience, AWS proficiency, and a proven ability to mentor developers, implement secure coding practices, and collaborate across DevOps and product teams.

Qualifications

• Bachelor’s degree in Computer Science, Information Systems, or related field.
• 12+ years of experience in backend software development.
• Strong expertise in Java and related technologies.
• Hands-on experience with Spring and Spring Boot frameworks.
• Experience building and consuming RESTful APIs.
• Proficiency with AWS cloud services.
• Experience with Git/GitHub and modern version control practices.
• Familiarity with DevOps tools such as Jenkins.
• Experience with Kafka or other messaging systems.
• Strong understanding of software design patterns (OOP and functional programming).
• Knowledge of secure coding practices and application security.
• Excellent problem-solving, communication, and collaboration skills.

Responsibilities

• Design, develop, and enhance backend features and applications with a focus on scalability, performance, and reliability.
• Define and drive the long-term technical vision and architecture across multiple services and systems.
• Act as a technical leader within agile squads, participating in all ceremonies from design to delivery.
• Develop high-quality, maintainable, and testable code following industry standards and metrics.
• Lead and mentor developers by conducting code reviews, defining standards, and sharing knowledge.
• Architect and integrate distributed systems, microservices, and RESTful APIs.
• Collaborate with DevOps and operations teams to improve system performance and reliability.
• Automate processes to achieve operational excellence.
• Stay updated with emerging technologies and industry trends.
• Troubleshoot and resolve complex technical issues for internal and external stakeholders.
• Maintain documentation, operational procedures, and ensure audit/compliance readiness.
• Identify, assess, and manage risks in alignment with organizational policies.

Skills

Java backend

Spring Framework

REST APIs

AWS

Git/GitHub

DevOps tooling

Kafka messaging

OO/FP design patterns

Secure coding

Communication

Problem solving

Education

Bachelor's degree in CS/IS or related

Tools

GitHub

Jenkins

AWS

Job description

Quantum Technologies. LLC is seeking a Principal Java Backend Software Engineer to design, build, and scale backend services in a fast-paced environment.

You will guide architecture decisions and lead agile squads while delivering high-quality code and robust APIs. The role requires expert Java and Spring experience, AWS proficiency, and a proven ability to mentor developers, implement secure coding practices, and collaborate across DevOps and product teams.