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Java Backend Developer

Listing for: Quantum Technologies. LLC
Full Time position Listed on 2026-11-08
Job specializations:
  • Software Development
    Backend Developer, Java Developer
Salary/Wage Range or Industry Benchmark: 110000 - 150000 USD Yearly USD 110000.00 150000.00 YEAR

Job Description & How to Apply Below

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 Dev Ops 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.

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