Senior Java Backend Engineer | Spring Microservices

IDEMIA Group; Indiana, Northern (PA, KY); Hybrid; USD 90,000 - 120,000; Full time

Job summary

IDEMIA is seeking a Java Backend Developer to contribute to scalable and secure backend services. The role focuses on designing, building, and extending microservices with Spring Boot and REST APIs, while ensuring robust data handling and performance.

Collaborate across teams in an Agile framework to deliver enterprise-grade solutions. The ideal candidate will have 3–5 years of hands-on Java experience, strong Java fundamentals, and a solid understanding of patterns, testing, and CI/CD

Qualifications

• 3–5 years of professional experience in Java backend development.
• Strong knowledge of Core Java, OOPs, Collections, Exception Handling, Multithreading, and Java 8+ features.
• Strong hands-on experience with Spring Boot and Spring Framework.
• Good experience in Microservices architecture and development.
• Strong knowledge of REST APIs, JSON, HTTP/HTTPS, and API integration.
• Good experience with SQL and relational databases.
• Experience with JPA/Hibernate.
• Knowledge of Maven/Gradle build tools.
• Experience with Git/GitHub/GitLab/Bitbucket.
• Good understanding of Unit Testing using JUnit/Mockito.
• Understanding of design patterns, SOLID principles, and clean coding practices.

Responsibilities

• Design, develop, test, and maintain robust backend applications using Java and Spring Boot.
• Develop and maintain Microservices‑based applications using Spring Boot.
• Design and implement RESTful APIs and integrate with internal and external systems.
• Write clean, efficient, reusable, and maintainable Java code.
• Work with databases such as MySQL, PostgreSQL, Oracle, or similar RDBMS.
• Implement business logic, data validation, exception handling, and API security.
• Troubleshoot and resolve application issues, performance bottlenecks, and production defects.
• Participate in code reviews, unit testing, debugging, and performance optimization.
• Collaborate with frontend developers, QA, DevOps, architects, and business teams.
• Work with Git‑based version control and follow Agile/Scrum development practices.
• Contribute to application architecture, technical design, and continuous improvement of backend services.

Skills

Java backend development

Spring Boot

Microservices

REST APIs

SQL

JUnit/Mockito

Git/GitHub/GitLab/Bitbucket

Design patterns

SOLID principles

Multithreading

Tools

Git

Maven/Gradle

JPA/Hibernate

Job description

IDEMIA is seeking a Java Backend Developer to contribute to scalable and secure backend services. The role focuses on designing, building, and extending microservices with Spring Boot and REST APIs, while ensuring robust data handling and performance.

Collaborate across teams in an Agile framework to deliver enterprise-grade solutions. The ideal candidate will have 3–5 years of hands-on Java experience, strong Java fundamentals, and a solid understanding of patterns, testing, and CI/CD