Senior Java Backend Developer
Location: Pennsylvania, Pennsylvania, United States, Colorado, Colorado, United States
Workplace: on_site
Employment Type: full
Description
Core Java & Backend Development
• 5+ years of hands on Java development experience
• Strong proficiency in Java (Java 8+)
• Solid understanding of: o Object Oriented Programming (OOP) o Design patterns (Factory, Singleton, DAO, etc.) o Exception handling, multithreading, and collections
• Experience building scalable, maintainable backend services
API Development
• Strong experience designing and developing RESTful APIs
• Hands on with Spring Boot / Spring MVC
• API design best practices: o HTTP methods, status codes o Request/response validation o Versioning strategies
• Experience with JSON, request serialization/deserialization
• Familiarity with API documentation tools (Swagger / OpenAPI)
• API testing using tools such as Postman, REST Assured, or similar
Frameworks & Libraries
• Spring Framework (Core, Boot, MVC)
• Dependency Injection and Aspect Oriented Programming (AOP)
• Data Power
• ORM frameworks such as: o Hibernate / JPA
• Experience with Microservices architecture is strongly preferred
Database & SQL
• Strong hands on experience with SQL
• Ability to write and optimize: o Complex joins o Subqueries o Stored procedures (nice to have)
• Experience with relational databases such as: o Oracle o Teradata DevOps, Build & Deployment
• Experience with Maven / Gradle
• Version control using Git/bitbucket
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