Java Developer Core Java

Job Title: Java Developer Core Java, Spring, REST APIs
Location: O Fallon MO/Onsite
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Job Summary:

We are looking for a Java Developer with strong expertise in Core Java, Spring Framework, and RESTful web services. The ideal candidate should have hands-on experience with design patterns, JPA, API development and security, and a good understanding of CI/CD and cloud environments.

This role requires solid problem-solving skills, familiarity with modern development practices, and the ability to write clean, maintainable code.

Key Responsibilities:

• Develop and maintain robust, scalable, and secure applications using Core Java and Spring Core
• Design and implement RESTful web services and integrate with external APIs
• Apply and implement design patterns such as Singleton and Factory in real-world scenarios
• Write optimized and clean SQL queries for interacting with databases
• Implement API security, including rate-limiting and authorization mechanisms
• Work with JPA for ORM and persistence layer development
• Participate in basic programming tests as part of evaluation
• Collaborate with cross-functional teams in Agile/Scrum environments

Required Skills:

• Strong knowledge of Core Java and Spring Core
• Hands-on experience in designing and writing REST APIs
• Good understanding and practical implementation of design patterns (e.g., Singleton, Factory)
• Familiarity with API security concepts and rate-limiting strategies
• Experience with JPA and writing basic SQL queries
• Understanding of software development lifecycle and best practices

Good to Have:

• Experience with CI/CD tools like Jenkins
• Exposure to cloud platforms (AWS, Azure, or Google Cloud Platform)
• Understanding of API Gateway and how APIs are managed and secured in cloud environments
• Knowledge of Docker and microservices architecture is a plus

Education:

• Bachelor s degree in Computer Science, Engineering, or related field