Sr. Java/Python Full Stack Developer

Job Description

Job Description

Company Description

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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.

Benefits

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

Job Description

We are looking for a motivated senior full stack developer to join our team in Plano, TX. This position is responsible for the development, deployment, and operation support of enterprise web applications based on Java/J2EE and Spring framework. The primary responsibility includes analyzing application issues, implementing code changes, managing application releases, performing production deployments, and providing stable operation support for business-critical applications. The role will work closely with business users, development teams, infrastructure teams, and global IT organizations to ensure application availability, performance, and continuous improvement. In addition to traditional enterprise application operation responsibilities, this position will support digital transformation initiatives by developing AI-enabled solutions using Python, Large Language Models (LLM), and Agentic AI technologies. The ideal candidate will have strong Java/Spring application development and operational experience, with the ability to expand into AI application development including AI Agents, workflow automation, and intelligent application services.

 

Key Responsibilities

• Design, develop, test, and maintain full stack applications and services using Java and Python.

• Build and maintain front-end interfaces (HTML, CSS, JavaScript) alongside back-end APIs and services.

• Design, develop, and maintain end-to-end solutions using J2EE technologies for both front-end and back-end components. Collaborate with cross-functional teams to understand business requirements and translate them into technical specifications

• Utilize modern front-end technologies (HTML5, CSS3, JavaScript, Angular, React, etc.) to create responsive and user-friendly interfaces. Implement and maintain efficient and reusable front-end components

• Develop server-side logic using Java and J2EE frameworks (Spring, Hibernate, etc.). Design and implement RESTful APIs to facilitate seamless communication between front-end and back-end components

• Design and optimize database schemas, queries, and transactions. This position especially needs strong SQL skills. Experience with relational databases (e.g., MySQL, Oracle, PostgreSQL) and NoSQL databases

• Write clean, maintainable, and efficient code. Conduct thorough unit testing and participate in code reviews to ensure high-quality deliverables

• Support the integration and fine-tuning of AI/LLM-based features into existing and new applications.

• Assist in building and maintaining CI/CD pipelines and other DevOps automation.

• Deploy, configure, and troubleshoot applications on Linux (Ubuntu) and Windows Server environments.

• Use Git for version control and participate in code reviews and pull requests.

• Participate in Agile/Scrum ceremonies, sprint planning, and cross-functional team meetings.

• Document technical processes, code changes, and system configurations.

• Troubleshoot and resolve bugs and production issues in a timely manner.

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, Information Technology, or related field.

• Must have web UI side technical skills: Angular5, Bootstrap, JQuery, HTML/CSS, Ajax, JSON, Java script

• 9+ years of experience in enterprise application development, operation, and production support.

• Experience with version control systems (Git), build tools (Maven, Gradle), and continuous integration/delivery

• Experience with DevOps practices and tools including CI/CD pipeline, Git, Jenkins, Kubernetes, or cloud-based deployment environments

• Strong experience in Java-based J2EE Web Application development and maintenance.

• Hands-on experience with Spring Framework (Spring MVC, Spring Boot, Spring Security, etc.).

• Experience in application deployment, release management, troubleshooting, and production incident resolution.

• Strong understanding of Web application architecture, REST API, database integration, and middleware technologies.

• Experience with SQL and relational databases such as Oracle, PostgreSQL, or similar databases.

• Experience with software development lifecycle (SDLC) and IT service management processes.

• Strong communication skills and the ability to effectively interact with cross-functional teams

• Foundational understanding of AI/LLM concepts and practical applications

 

Preferred Qualifications

• Experience supporting cloud platforms such as AWS, Azure, or Samsung Cloud Platform (SCP).

• Experience with application monitoring, logging, and performance troubleshooting.

• Experience developing Python-based applications or automation scripts.

• Knowledge or hands-on experience with Generative AI, Large Language Models (LLM), and AI Agent development.

• Experience with Agentic AI frameworks such as LangChain, LangGraph, AutoGen, CrewAI, or similar technologies.

• Experience building AI-powered workflow automation, RAG (Retrieval Augmented Generation) applications, or LLM-based services.

• Ability and willingness to combine enterprise application development skills with emerging AI technologies.

 

Additional Information

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

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