Java Developer — Promotions |

Department: Product Development — Promotions

Reporting To: Promotions Platform Lead

Location: Chennai — On-site

Experience: 2–5 Years

Employment Type: Full-time

Job Summary

We are looking for a Java Developer with 2–5 years of hands-on development experience to join the Promotions Product Development team. The candidate will be responsible for developing, enhancing, debugging, testing, and maintaining a promotions engine within an established retail technology product.

The ideal candidate should have strong Core Java, SQL, Hibernate/JPA, REST APIs, XML/JSON, JavaScript and JSP experience, along with strong debugging and production-support capabilities. Experience working with Jenkins, SVN, unit/integration testing and relational databases is required.

Candidates from software product companies are preferred, particularly those with exposure to retail, POS, promotions, pricing, loyalty, billing or other transaction-oriented systems.

Key Responsibilities

- Develop and maintain promotion-related features across:
- REST APIs
- Business rules
- Promotion logic
- Reports
- Backend services
- Develop enhancements using Java while working within an existing product codebase.
- Analyze and resolve application defects using:
- Application logs
- Stack traces
- Exceptions
- Database queries
- Debugging tools
- Investigate and resolve live/production application issues.
- Safely modify, refactor and enhance legacy/established code.
- Identify opportunities for technical-debt reduction.
- Improve application performance, reliability and maintainability.
- Write and maintain unit tests and integration tests.
- Build, package and deploy applications using Jenkins.
- Manage source code and version control using SVN.
- Diagnose integration issues between the promotions platform, POS systems and other connected applications.
- Participate in root-cause analysis (RCA) for recurring defects and production issues.
- Implement defect-prevention and corrective actions.
- Work closely with product, QA and technical teams to deliver reliable product enhancements.

- Technical Skills — Mandatory

- Core Java — Must Have

- 2–5 years of hands-on Java development.
- Robust understanding of Java fundamentals.
- Object-Oriented Programming — OOP.
- Collections.
- Exception handling.
- Multithreading/concurrency fundamentals.
- Java I/O and common Java APIs.




- Debugging and code-level troubleshooting.
- Ability to understand and modify an existing Java codebase.

2. SQL & Relational Databases — Must Have

- Strong SQL knowledge.
- Relational database concepts.
- Joins.
- Subqueries.
- Aggregations.
- Query optimization/basic performance analysis.
- Database troubleshooting.
- Ability to analyze production issues through database queries.

3. Hibernate / JPA — Must Have

- Hands-on experience with Hibernate and/or JPA.
- ORM concepts.
- Entity mapping.
- Relationships.
- CRUD operations.
- Querying and transaction handling.

4. REST APIs — Must Have

- REST API development/maintenance.
- API integration.
- HTTP methods and status codes.
- Request/response handling.
- JSON processing.
- API debugging and troubleshooting.

5. XML / JSON — Must Have

- XML processing.
- JSON processing.
- Data serialization/deserialization.
- Troubleshooting API/integration payloads.

6. JavaScript & JSP — Must Have

- JavaScript fundamentals.
- JSP development/maintenance.
- Ability to work on existing web application components.
- Understanding of backend-to-frontend integration.

7. Testing — Must Have

- Unit testing.
- Integration testing.
- Test-case development.
- Defect reproduction.
- Regression testing.
- Ability to write tests for newly developed or modified functionality.

8. Debugging & Production Support — Must Have This is a particularly important part of the role.

Candidates should be capable of:

- Reading application logs.
- Understanding stack traces/exceptions.
- Reproducing defects.
- Debugging Java code.
- Identifying database-related issues.
- Troubleshooting API/integration failures.
- Performing root-cause analysis.
- Supporting live/production applications.

9. Jenkins — Must Have

- Build and deployment using Jenkins.
- Understanding of CI/CD pipelines.
- Application build/package/deployment troubleshooting.

10. SVN — Must Have

- Practical experience with Subversion (SVN).
- Source-code check-in/check-out.




- Branching/merging.
- Version management.

Preferred / Good-to-Have Skills

Rule Engine / Promotions

- Drools
- Rule-engine development
- Business-rule implementation
- Decision tables
- Promotion/rule evaluation logic

Drools is preferred but not mandatory if the candidate has strong Java fundamentals and is willing to learn rule-engine technology.

Frontend

- React
- Modern JavaScript
- Basic frontend development experience

Domain Experience Candidates with experience in any of the following domains are preferred:
- Retail technology
- POS
- Point of Sale
- Promotions
- Pricing
- Loyalty
- Billing
- Retail ERP
- Order management
- Store management
- Transaction processing
- Distribution management
- E-commerce/retail platforms

Product Company Preference Software product-company experience is preferred over pure IT-services experience.

Strong candidates may have experience in:

- Product development
- Product maintenance
- Enterprise applications
- Retail products
- SaaS products
- POS products
- Transaction-processing platforms
- Long-running/established product codebases

Candidates from service companies can still be considered if they have strong hands-on Java development + production debugging + product/application ownership experience. AI Coding Tools — Preferred

Candidates who have practical exposure to AI-assisted software development tools can be considered positively, particularly for:

- Understanding unfamiliar/legacy code
- Debugging assistance
- Generating unit tests
- Code refactoring suggestions
- Documentation/code explanation
- Identifying potential defects

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📌 Java Developer (Chennai)
🏢 NAZZTEC
📍 Chennai