Sr. Backend Java Developer

Woongjin, Inc; Plano (TX); On-site; USD 100,000 - 108,000; Full time

Benefits offered by this job

Medical Insurance

Vision Insurance

401(k)

Paid Sick hours

Job summary

Woongjin, Inc. is seeking a Senior Java Back-end Developer to design, develop, and maintain scalable RESTful services using Java, Spring, and modern backend patterns.

You will work closely with cross-functional teams to translate business needs into robust software solutions, emphasize security, performance, and reliability, and contribute to technical direction. The ideal candidate has 5+ years of Java backend experience, strong API design skills, and hands-on experience with Oracle SQL, CI/CD,

Qualifications

• Bachelor's degree in Computer Science, Engineering, or related field.
• 5+ years of Java backend development experience.
• Strong Java skills with Spring, Spring Boot, and Spring Batch.
• Experience with Oracle SQL and database design.
• Experience with RESTful APIs, Maven, Git, and CI/CD.
• Familiarity with OAuth/Security, unit tests, and Agile teams.

Responsibilities

• Design, develop, and maintain robust RESTful services using Java and Spring.
• Implement data persistence with Oracle SQL and Hibernate/JPA.
• Ensure security, reliability, and performance with CI/CD pipelines.
• Collaborate with cross-functional teams and mentor engineers.

Skills

Java

Spring Framework

Spring Boot

Spring Batch

REST APIs

OOP

CI/CD

Education

Bachelor's degree in CS/Engineering

Tools

Oracle SQL

Maven

Git

Jenkins

Job description

• Compensation: USD 100,000 - USD 108,000 - yearly

Company Description

Our Mission

WOONGJIN INC. is a rapidly growing team who provides a range of unique, exceptional, and enhanced services to our clients. We have a strong moral code that includes the service of goodness without expectations of reward. We are motivated by the sense of responsibility and servant leadership.

• Medical Insurance
• Vision Insurance
• 401(k)
• Paid Sick hours

Job Description

We are seeking an experienced Java Back-end Developer to join our team. The ideal candidate will be responsible for designing, developing, and maintaining robust and scalable back-end solutions using Java and related technologies. This Senior Developer will work closely with cross-functional teams to deliver high-quality software solutions that meet our business needs.

Responsibilities:

• Design, develop and maintain high quality, production grade and secure RESTful web services and APIs using Java and Spring Framework, while modeling best practices for reliability, testability and operational excellence.
• Work with Spring Framework modules, including Spring Core, Spring MVC, Spring Security, Spring Data, Spring JDBC, and Spring Batch.
• Implement database integration using MyBatis, JDBC, Hibernate/JPA, and Oracle SQL.
• Implement caching mechanisms to improve application performance and scalability.
• Handle data serialization and deserialization using JSON, XML, Jackson, and other serialization frameworks.
• Develop and maintain API documentation using SpringFox and Swagger/OpenAPI.
• Implement real-time communication and integrations using WebSocket.
• Understand CDN integration, caching strategies, and content delivery optimization.
• Deploy, configure, monitor, and troubleshoot applications on Apache Tomcat and Oracle WebLogic.
• Implement application security using OAuth 2.0, JWT, SSO, and SSL/TLS.
• Develop unit and integration tests and participate in code reviews.
• Work with Maven, Git/GitHub, Jenkins, and CI/CD pipelines.
• Integrate and apply AI techniques (LLMs, AI assisted development tools etc.) to improve software engineering workflows, developer productivity and operational efficiency.
• Participate in production support, performance tuning, debugging, and root-cause analysis.
• Share your passion for staying on top of tech trends, experimenting and learning new technologies, and mentoring other members of our Engineering team.

Qualifications

• Bachelor's degree in Computer Science, Engineering, or a related field.
• 5 Plusyears of experience in Java back-end development.
• Proficiency in Java programming language and related frameworks (e.g., Spring, Spring Boot, Spring Batch).
• Strong understanding of object-oriented programming principles, data structures, and algorithms.
• Experience with Oracle SQL and database design principles.
• Proficiency in RESTful web services and API development.
• Experience with build tools such as Maven.
• Knowledge of version control systems, particularly Git.
• Strong knowledge of application servers such as Tomcat and WebLogic.
• Experience with continuous integration tools such as Jenkins.
• Familiarity with automated testing frameworks such as JUnit.
• Understanding of authentication and authorization mechanisms, including OAuth.
• Knowledge of SOAP web services and related technologies.
• Strong problem-solving skills and attention to detail.
• Excellent communication and collaboration skills.
• Ability to work effectively in a fast-paced, agile environment.
• Self-motivated, eager to learn, and willing to take on new challenges while actively contributing to team goals.

Preferred Qualifications:

• Experience with other databases such as MySQL, PostgreSQL, or MongoDB.
• Familiarity with continuous integration/continuous deployment (CI/CD) pipelines.
• Understanding of software development best practices and design patterns.
• Experience with Python.

Additional Information

All your information will be kept confidential according to EEO guidelines.