WHAT DOES A J2EE DEVELOPER DO?

Updated: Dec 11, 2025 - The Java 2 Platform, Enterprise Edition (J2EE) Developer programs and maintains software modules of medium complexity, following detailed specifications and contributing to design and prototyping activities under the guidance of a line manager. This role involves developing and testing code using standard tools and practices, understanding design patterns, participating in incident management, and supporting the full development cycle, including UAT and Go Live. The developer also acts as a first point of support for junior colleagues, while adhering to development standards such as code management, continuous integration, and code review.

A Review of Professional Skills and Functions for J2EE Developer

1. J2EE Developer Role Purpose

  • Application Design: Participate in application designing, coding, testing, and deployment.
  • System Analysis: Understand the existing system, design, and develop application enhancements according to department-required standards.
  • Database Management: Write database SQL queries and stored procedures for the applications.
  • Project Planning: Prepare a detailed plan for the system implementation phase.
  • Software Installation: Responsible for installing application software.
  • User Training: Develop user procedures, materials, and training documentation.
  • Coding Skills: Utilize modeling, design, and coding skills.
  • System Testing: Conduct system performance and acceptance tests.
  • Production Execution: Execute production startup procedures.
  • Report Development: Responsible for developing reports.
  • Performance Testing: Perform application load and stress tests.

2. J2EE Developer Duties and Roles

  • Feature Development: Responsible for designing, coding, testing, and delivering innovative features on the product.
  • Java Expertise: Demonstrate understanding of the Java/J2EE framework used in the application.
  • Issue Resolution: Resolve issues and contribute to the overall quality of the product.
  • Architectural Support: Responsible for complementing the development architect in building product features and solving complex issues.
  • Agile Practices: Use Agile and software engineering concepts and processes to achieve committed results, and actively contribute to ongoing improvements.
  • Continuous Learning: Continuously learn to gain state-of-the-art agile software engineering skills.
  • Project Delivery: Deliver according to schedule and communicate plans, progress, and issues in a timely manner.
  • Adaptability: Thrive in a fast-paced start-up environment.
  • Technology Mastery: Understand and master new technologies quickly.

3. J2EE Developer Responsibilities and Key Tasks

  • Java Support: Assist with Java-related support.
  • Application Security: Wire up the Header Variable from Open AM to the Angular/Spring Application for security.
  • JMS Configuration: Configure and set up JMS from SOA to the internal database.
  • Code Debugging: Debug files and view contents in the code (Eclipse).
  • System Maintenance: Modify the system when changes occur after "go live."
  • Technical Training: Help staff understand how to debug files and view the contents in the code (Eclipse).
  • Change Management: Help determine and document a process for code changes after “go-live.”
  • IT Support: Assist the IT Architect with other projects related to preparing for a new environment (Java and/or Oracle related).

4. J2EE Developer Roles and Details

  • Technical Leadership: Oversee technical design, development, and implementation of large projects and major software products and systems.
  • Software Development: Design and code software components, units, and modules that meet product specifications and development schedules.
  • Testing and Debugging: Test and debug assigned components and units.
  • System Planning: Participate in large system and subsystem planning.
  • Release Management: Adhere to product build and release schedules and strategies.
  • Technical Mentorship: Act as a technical resource for lower-level developers.
  • Application Integration: Integrate a wide variety of applications from various sources, ensuring they meet performance standards for stability and resource utilization.
  • Quality Assurance: Adhere to accepted development standards, including writing unit tests with high code coverage, participating in peer code reviews, conducting design reviews, and generating test plans to ensure maximum stability and quality of code.

5. J2EE Developer Responsibilities

  • Java Development: Develop innovative engineering solutions in Core Java and J2EE, Core Spring Framework, including sub-projects like Spring Security and Spring Integration.
  • Data Engineering: Develop and automate large-scale, high-performance data processing systems to drive and improve product experience.
  • Spark Pipeline Development: Build scalable Spark data pipelines leveraging the scheduler/executor framework.
  • Telemetry Design: Design and build impactful telemetry and usage tracking solutions for BI tools to enhance governance and monitoring.
  • Data Pipeline Optimization: Mature modern data pipeline streams for analytics use cases.
  • Team Management: Manage data resources and build a strong T-shaped team.
  • Sprint Support: Support the data development teams in their sprints for daily deliveries.
  • Capability Analysis: Identify additional capability gaps within the data platform to support models.

6. J2EE Developer Details

  • Cross-Functional Collaboration: Work collaboratively with data scientists, data analysts, and product owners to understand data requirements for models and business objectives.
  • Stakeholder Management: Work with senior and C-level stakeholders for reporting and influencing vision and strategy.
  • Data Modeling: Design data models for optimal storage, retrieval, and alignment with critical product and business requirements.
  • Logging Architecture: Understand and influence logging to support data flow, architecting logging best practices.
  • Cloud Enablement: Evaluate public and private cloud enablement options for analytical and reporting tools, contributing to tool maturity.
  • Proof of Concept Development: Conduct POCs to define the path toward scalable analytic solutions.
  • Cloud Solution Design: Build audit-compliant cloud solutions and simplify access mechanisms to enhance self-service robustness, efficiency, and security.
  • Vendor Tool Deployment: Define advanced vendor tool deployment solutions in the cloud and on-premises, aiming for zero customer impact during feature or version upgrades.

7. J2EE Developer Duties

  • Technology Assessment: Assess the technical viability of emerging products and technologies.
  • Technology Evaluation: Work with developers and infrastructure specialists to test and evaluate new technologies.
  • Business Case Development: Participate in the development of business cases and obtain approvals for capital expenditures.
  • Performance Monitoring: Monitor and analyze new technology product performance, resolving issues and recommending improvements or modifications for complex situations.
  • Requirements Analysis: Conduct requirements gathering and analysis to understand software domains, hardware-software interfaces, and overall system characteristics.
  • IT Standards Development: Consult with systems engineers and architects to develop IT standards and translate client requirements into technical designs for large IT solutions.
  • Software Development: Use programming, scripting, and database languages to write software code.
  • Process Modeling: Model key business processes and critical paths, assessing the impact of technology on business workflows.
  • Software Support: Support software testing, deployment, maintenance, and evolution by correcting errors, responding to scope changes, and coding enhancements.
  • Documentation Management: Maintain accurate records for system development and revision documentation.
  • Technical Mentorship: Coach and review the work of lower-level professionals.

8. J2EE Developer Additional Details

  • Software Programming: Program in new and existing code and maintain software modules of medium complexity, following detailed written and oral requirements and specifications.
  • Team Support: Provide support to junior colleagues as a first reference point for guidance in specific areas.
  • Design Patterns: Understand and apply common software design patterns.
  • Prototyping Assistance: Assist in developing prototyped versions of software modules and applications.
  • Design Participation: Assist in software design activities as assigned by the line manager.
  • Unit Testing: Develop unitary testing scenarios and take accountability for testing personal code.
  • Tool Proficiency: Ensure a thorough understanding of tools and templates for testing and bug tracking within the project.
  • Incident Management: Participate in basic incident management activities, supporting requests and troubleshooting routine issues.
  • Development Standards: Understand and adhere to development rules, including code management, repositories, continuous integration (CI), and code review.
  • Development Cycle Participation: Participate in various development cycle stages, including UAT and Go Live, at the assigned level.

9. J2EE Developer Accountabilities

  • Requirements Implementation: Acquire requirements and implement new product features while adhering to professional development standards.
  • Java Development: Develop and design application components in Java using WebLogic to conserve existing code and create new services.
  • Technical Problem-Solving: Solve interesting technology and provide viable solutions to usability challenges on a daily basis.
  • Agile Development: Engage as a back-end server engineer in an agile development team while collaborating with PMs, Developers, and QA engineers in participation in the full development process.
  • Application Testing: Establish applications received through the system, unit, and integration testing.
  • Product Contribution: Commit and contribute to the future vision and direction of the product suite through new feature development and bug fixes.
  • Framework Utilization: Work on Core Java/J2EE technologies, Web Services, Spring-Boot and Hibernate frameworks.
  • Stakeholder Collaboration: Interface with key stakeholders and apply technical proficiency across different stages of the software development life cycle, including requirements elicitation, application architecture definition and design.
  • High-Level Design: Play an important role in creating the high-level design artifacts and deliver high-quality code deliverables for a module, lead validation for all types of testing and support activities related to implementation, transition and warranty.

10. J2EE Developer Tasks

  • Tier 1 Support: Provide Tier 1 service for Retail Banking and parts of Wholesale Banking, as well as key enterprise technology capabilities such as Enterprise Customer Information, Enterprise Integration and Messaging Services, and Electronic Payment Services.
  • Requirement Conversion: Responsible for converting specifications about business requirements into programming instructions.
  • System Development: Review, analyze, and modify programming systems, including coding, testing, debugging, and primarily back-end development of Java-based applications supporting the enterprise customer information system.
  • Documentation Maintenance: Maintain records to document program development and revisions and provide support for existing production applications.
  • Production Support: Resolve problems in a production environment and extend functionality within current web and mobile-based applications.
  • Solution Development: Develop new solutions and systems.
  • Technology Integration: Understand how and when to incorporate technologies to provide the very best service in response to business needs.
  • System Knowledge: Acquire and assimilate knowledge about current systems, both to understand their relationship to business needs and objectives and to understand the dependencies between systems.