Java Backend Developer

Quantum Technologies. LLC; Raleigh (NC); On-site; USD 110,000 - 150,000; Full time

Benefits offered by this job

Health insurance

Job summary

Quantum Technologies. LLC is seeking an experienced Java Backend Developer to design, develop, and maintain scalable, high-performance backend applications. The role requires strong Core Java, Spring Boot, microservices architecture, REST APIs, Hibernate/JPA, and relational databases.

You will build robust backend services, integrate third-party APIs, and collaborate with cross-functional teams. The ideal candidate will implement authentication and authorization with Spring Security and JWT,

Qualifications

• Strong knowledge of Core Java, Spring Boot and microservices architecture.
• Experience building RESTful APIs and integrating with databases (MySQL, PostgreSQL, Oracle).
• Familiarity with Hibernate/JPA, Spring Data, and Spring Security (JWT).
• Proficient in writing unit/integration tests with JUnit and Mockito.

Responsibilities

• Design, develop and maintain backend applications in Java/Spring Boot.
• Develop RESTful services and integrate third-party APIs.
• Build scalable, secure microservices-based applications.

Skills

Core Java

Spring Boot

Microservices

REST APIs

Hibernate/JPA

SQL databases

Spring Security

JWT

JUnit

Mockito

Job description

US Citizen, Green Card, H-1B, OPT-EAD, CPT, Other

Work Authorization:US Citizen, Green Card, OPT-EAD, CPT, H-1B, H4-EAD, Other

Job Summary:

We are looking for an experienced Java Backend Developer responsible for designing, developing, and maintaining scalable, high-performance backend applications.

The ideal candidate should have strong knowledge of Core Java, Spring Boot, Microservices architecture, REST APIs, Hibernate/JPA, and relational databases. The candidate should be capable of developing robust backend services, integrating third-party APIs, and working with cross-functional teams.

Key Responsibilities:

• Design, develop, and maintain backend applications using Java and Spring Boot.
• Develop RESTful APIs and integrate third-party services.
• Build scalable and secure microservices-based applications.
• Implement business logic using Core Java and advanced Java concepts.
• Work with databases such as MySQL, PostgreSQL, or Oracle.
• Use Hibernate and Spring Data JPA for database operations.
• Optimize application performance and improve code quality.
• Implement authentication and authorization using Spring Security and JWT.
• Write unit and integration tests using JUnit and Mockito.
• Collaborate with frontend developers, QA engineers, and DevOps teams.
• Troubleshoot, debug, and resolve application issues.
• Participate in code reviews, technical discussions, and Agile ceremonies.

We are an equal opportunity employer. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, national origin, citizenship/ immigration status, veteran status, or any other status protected under federal, state, or local law.