WHAT DOES A JAVA DEVELOPER DO?

Published: Nov 10, 2025 - The Java Developer is responsible for analyzing, designing, coding, testing, and implementing application enhancements in alignment with business requirements, schedule, and quality standards. This role involves collaborating with cross-functional teams during sprint planning, ensuring compliance with organizational policies, and providing technical support, including on-call and 24/7 assistance. The developer also performs unit and integration testing, conducts defect analysis, and documents developed components to ensure reliable and maintainable solutions.

A Review of Professional Skills and Functions for Java Developer

1. Java Developer Job Description

  • Software Development: Support the design, development, implementation, and maintenance of software programming applications.
  • Programming Concepts: Apply software programming concepts, practices, and procedures.
  • Performance Optimization: Design and refactor for performance and scalability.
  • Project Coordination: Estimate, prioritize, plan, and coordinate work.
  • Code Review: Responsible for conducting code reviews.
  • Technical Documentation: Document supporting installation instructions and basic user operations and troubleshooting manuals.
  • System Configuration: Support system configuration along with supporting application deployments.
  • Software Testing: Responsible for software testing.
  • Problem Solving: Identify software programming problems/issues and provide solutions for review by the manager.

2. Java Developer Essential Functions

  • Team Collaboration: Work as part of a team to implement and test software solutions.
  • Software Design: Design and develop coding solutions for functional requirements.
  • Development Lifecycle: Contribute to all phases of the development lifecycle.
  • Code Quality: Write well-designed, testable, efficient code.
  • System Documentation: Properly document the system, including coding, design, and testing.
  • Specification Compliance: Ensure designs and implementations are in compliance with specifications.
  • Code Standards: Ensure code meets or exceeds standards.
  • Software Release Management: Prepare and produce releases of software components.
  • Java Development: Responsible for software design and development in a Java language environment.
  • Code Documentation: Responsible for code documentation.
  • Continuous Learning: Continuous training and learning to improve development skills.
  • Development Support: Support all stages of the development process.

3. Java Developer Additional Details

  • Team Collaboration: Work closely with technology and product teams.
  • System Analysis: Understand the user stories and existing system architecture processes.
  • Testing Development: Build new unit test features, write unit and integration tests.
  • Defect Resolution: Resolve existing or new defects.
  • DevOps Operations: Understand basic DevOps activities and perform code merging into the repository, and deployment of the build to the environment.
  • Task Management: Responsible for managing tasks through JIRA.
  • Agile Participation: Participate in scaled agile ceremonies.
  • Data Analysis: Assist with data visualization and data profiling.

4. Java Developer Roles

  • Business Analysis: Understand business needs and functional analysis.
  • Continuous Integration: Responsible for continuous integration and deployment.
  • Application Development: Design, development, and integration of applications.
  • Technical Documentation: Draft the various associated documentation.
  • Application Testing: Test the application and deal with any malfunctions.
  • Process Compliance: Respect methodologies and development processes.
  • Best Practices: Establish good practices for use and development.
  • User Training: Responsible for user training to get started with the application.

5. Java Developer Duties

  • System Integration: Recommend specific product configurations to assist with overall system design and integration.
  • Software Development: Code, test, debug, implement, and document moderately complex programs.
  • Technical Documentation: Create appropriate documentation in work assignments, such as program code and technical documentation.
  • System Design: Design systems and programs to meet complex business needs.
  • Specification Preparation: Prepare detailed specifications from which programs are developed and coded.
  • Technical Analysis: Ensure programs meet standards and technical specifications, perform technical analysis and component delivery.
  • System Analysis: Gather information from existing systems, analyze program and time requirements.
  • Project Support: Assist the project manager in preparing time estimates and justification for assigned tasks.
  • Continuous Learning: Remain abreast of industry technical trends and new developments to maintain current skills and remain current with industry standards.

6. Java Developer Details

  • Software Documentation: Document and maintain software functionality.
  • Process Compliance: Comply with project plans and company processes.
  • Technical Presentation: Responsible for giving a technical seminar.
  • Knowledge Sharing: Actively contribute to the corporate knowledge base.
  • Technology Learning: Learn new technology quickly.
  • Requirements Analysis: Analyze requirements together with the Team Leader.
  • Software Implementation: Design and implement a project software application.
  • Code Quality: Perform unit tests and code review on the core functions of applications.
  • Technical Support: Support team and customers with ideas, solutions, and technical issues.
  • Time Management: Adhere to strict delivery schedules.

7. Java Developer Tasks

  • Code Development: Develop well-designed, testable, and efficient code according to specifications.
  • Automated Testing: Write functional and unit test code to automatically test key parts of the system.
  • Software Implementation: Implement software solutions per product requirements.
  • Cross-Functional Collaboration: Work closely with test engineers.
  • Test Planning: Review requirements, system designs, and plan for both manual and automated testing.
  • DevOps Support: Provide on-call support for cloud-deployed services as part of a DevOps team.
  • Issue Resolution: Investigate field issues, support production systems, and diagnose the root cause of defects/issues.
  • Team Collaboration: Collaborate within and outside the Scrum team in a resourceful and flexible manner.

8. Java Developer Responsibilities

  • Code Review: Responsible for MR review for other team members.
  • Process Improvement: Responsible for suggesting enhancements.
  • Project Ownership: Demonstrate ownership of development.
  • Engineering Excellence: Strive for engineering excellence in every aspect.
  • Feature Implementation: Responsible for implementing new features.
  • Feature Development: Responsible for the development of existing features.
  • Code Refactoring: Responsible for refactoring existing legacy code.
  • Test Coverage: Responsible for improving test coverage.
  • Deployment Management: Build and ship product artefacts to the dev/prod cluster.

9. Java Developer Job Summary

  • Enterprise Architecture: Understand the company's key business objectives, evolving technology strategy, and architect enterprise-wide solutions.
  • Architectural Strategy: Contribute to the development and evolution of the portfolio of reference architectural strategy, including development models, frameworks, reusable assets, and design strategy, and apply them to ongoing projects and initiatives.
  • System Optimization: Endeavor to minimize component complexity in the design and deployment of enterprise technology architecture through standards-based product selection and implementation.
  • Architecture Governance: Participate in the Architecture Review Board, providing technical guidance and design review/validation to strategic projects.
  • Technology Awareness: Keep abreast of technological changes and advancements, and identify opportunities to apply technology for competitive advantage.
  • Technical Mentorship: Mentor technology team members on capabilities and the application of emerging technologies.
  • Technology Research: Research and apply newer technologies towards the development of large-scale systems.
  • Database Management: Understand RDBMS (primarily SQL Server) concepts, inner workings, and SQL development.
  • System Design: Work on all facets of building a highly scalable, resilient, secure, stable, and high-performing solution.
  • Agile Methodology: Participate in and be familiar with Agile project methodologies.

10. Java Developer Accountabilities

  • Sprint Collaboration: Participate with DBS and CAI teams on Sprint Requirements grooming.
  • Application Development: Responsible for analyzing, designing, coding, testing, and implementing application enhancements within scope, schedule, and budget with minimal defects.
  • Team Collaboration: Collaborate with customers, business analysts, and IT team members.
  • Business Analysis: Understand business requirements that drive the analysis and design of quality technical solutions.
  • Technical Support: Provide required technical support, including release implementations, on-call, and 24/7 support.
  • Compliance Adherence: Perform work in compliance with all HMHS standards, policies, and procedures.
  • Effective Communication: Effectively communicate with team members, customers, and management.
  • Technical Review: Assist with or conduct technical walkthroughs.
  • Code Development: Develop code components and modules per specification, providing concise documentation.
  • Unit Testing: Conduct thorough unit testing using the automated unit test framework, develop and execute test scripts for each component module, and perform integration testing of functional modules.
  • Defect Resolution: Perform defect analysis and remediate identified defects.

11. Java Developer Roles and Responsibilities

  • Infrastructure Design: Lead designs of major infrastructure changes, new features, and system improvements in collaboration with the CTO.
  • Software Development: Design, develop, test, deploy, maintain, and improve code.
  • Project Management: Manage individual project priorities, deadlines, and deliverables with technical expertise.
  • Team Mentorship: Mentor and train other team members on design techniques and coding standards by providing coaching and feedback on pull requests.
  • Time Management: Manage time efficiently and focus on clear goals.
  • Problem Solving: Respond with a pragmatic approach towards tackling unforeseen challenges.
  • Product Development: Develop a product from scratch.
  • Database Design: Responsible for designing the product database.
  • Backend Development: Develop a backend system using Spring Boot, Spring Data, JPA, and Hibernate.
  • Mentorship Support: Constantly reviewed and supported by a mentor.
  • Industry Learning: Learn about the challenges of logistics, working with one of the biggest players in the market worldwide.

12. Java Developer Duties and Roles

  • Trading Platform Development: Work with the global team to design, develop, and integrate trading functionality into the trading platform.
  • Stakeholder Collaboration: Collaborate with traders and product managers to improve the trading ecosystem by proposing creative ideas and addressing feature requests, issues, and resolutions.
  • Project Lifecycle Management: Involved in the entire life cycle of the project, from design to development and deployment.
  • User Feedback: Work with traders to assess impact and usability, providing a feedback loop to enhance functionality.
  • Problem Solving: Design and develop innovative solutions to complex problems, identifying issues and roadblocks related to support, testing, and development efforts.
  • IT Transformation: Engage in a large-scale IT Transformation project with a public sector end client.
  • Technical Delivery: Responsible for delivering high-end technical solutions in a project.
  • System Integration: Responsible for designing technical services and planning system integration.
  • Technology Selection: Responsible for selecting necessary platforms and technologies to meet project requirements and user needs.
  • Technical Leadership: Provide technical leadership and consultancy to both internal and external development teams, ensuring infrastructure is fit for purpose while meeting time and budget constraints.

13. Java Developer Responsibilities and Key Tasks

  • Client Collaboration: Work on custom projects for clients, sometimes very closely with their team.
  • Project Communication: Keep a healthy communication with the project manager and client.
  • Project Involvement: Take an active part in all project stages, including analysis, estimation, documentation, coding, bug fixing, and support.
  • Product Development: Responsible for developing own products.
  • API Development: Develop the backend, middleware, and REST/SOAP API.
  • Code Quality: Deliver quality code deliverables.
  • Best Practices: Follow best practices, design patterns, and clean code architecture.
  • Technology Exploration: Explore new tech stacks and programming languages for upcoming projects.
  • Post-Production Support: Support any post-production issues.

14. Java Developer Functions

  • Server-Side Development: Take part in professional activities related to server-side development as part of product development, which include both Android, iOS and web clients.
  • Technology Implementation: Responsible for implementing new technologies.
  • Server Engineering: Develop high-performing servers in multi-threaded and complex environments.
  • Frontend Development: Develop user interface components and implement them following well-known React.js workflows such as Redux, in a full-stack team.
  • Project Development: Work on both customer-facing as well as start-up-oriented projects.
  • Core Java Development: Design and build complex Core Java software in an Agile environment, using industry best practices.
  • Code Review: Participate in code reviews, pull-request development, pair programming and test development.
  • Agile Collaboration: Proactively contribute to the team’s objectives of delivering incremental value every sprint and partner with other team members to deliver those objectives.
  • Stakeholder Communication: Interact with business stakeholders, customers and management to understand and refine user stories and the product backlog.
  • Innovation Management: Responsible for innovation and improvement whilst recognizing that customer outcomes are always king.

15. Java Developer Overview

  • Client Consultation: Consult with Fortune 500 clients in order to build enterprise-grade cloud-native applications.
  • Team Support: Support team members in order to deliver products to market in an efficient manner.
  • UX Collaboration: Partner with top-notch designers to create award-winning user experiences.
  • Frontend-Backend Integration: Bridge the gap between elegant front-end design and existing enterprise backend architectures.
  • Mentorship: Mentor less experienced engineers to foster their career path and growth.
  • API Development: Develop the platform’s core API and associated services.
  • Backend Optimization: Optimize backend solutions for speed, reliability, and scalability.
  • Technology Implementation: Investigate and implement new technology to keep the stack current.
  • Test Development: Write tests to facilitate an efficient development cycle and a reliable application.
  • Team Collaboration: Collaborate with a small team to implement new ideas.

16. Java Developer Roles and Details

  • Feature Implementation: Implement new business features within the CRM and Loyalty platform built by EPAM for the client.
  • Platform Learning: Dive into and learn the current platform, with its modular SOA architecture, comprising 30+ "macro" services in private cloud and a number of more modern "micro" ones in AWS.
  • Requirement Analysis: Discuss requirements with the product owner as a part of a team and propose a tech solution.
  • Code Development: Build clean code, unit test it, and document changes.
  • Code Review: Responsible for going through a code review process.
  • Deployment Support: Support deployment to upper environments by providing necessary instructions and/or scripts.
  • Issue Troubleshooting: Responsible for troubleshooting issues.
  • Application Development: Work as part of the application development team to develop and support in-house built applications.
  • Project Enhancement: Design, development and enhancement of projects, ensuring the delivered applications meet the desired requirements and quality.
  • Process Analysis: Analyse existing processes and systems.
  • Application Maintenance: Responsible for maintaining existing applications.
  • Standards Compliance: Adhere to standards and guidelines.
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