We are looking for a Backend Engineer with strong hands-on experience in Java 17, Spring, application modernization, dependency upgrades, and production remediation .

The engineer will work on modernizing existing Java applications, including runtime and framework upgrades, dependency and CVE remediation, and compatibility with HBase/Spark-based data platforms. The role requires strong focus on maintaining application behavior and API compatibility while making modernization changes.

The ideal candidate should have experience with Java 8 to Java 17 modernization , dependency remediation, automated testing, integration validation, and production application migration.

Responsibilities

- Modernize existing Java applications from legacy runtimes to Java 17 .
- Upgrade Spring/framework versions while maintaining application functionality and compatibility.
- Analyze and remediate application dependencies and associated CVEs/security vulnerabilities .
- Assess compatibility issues resulting from Java, Spring, library, runtime, and platform upgrades.
- Work with HBase and Spark integrations and resolve compatibility issues between applications and data platforms.
- Develop and maintain backend services and REST APIs as required during modernization.
- Perform dependency upgrades using Maven and/or Gradle .
- Implement code changes required to support runtime and framework modernization.
- Use automated testing to validate application behavior following modernization changes.
- Perform integration and compatibility testing across application, data, and infrastructure layers.
- Support remediation of findings identified through security scanning and dependency analysis.
- Work with DevSecOps and Security teams to resolve application security findings.
- Participate in production migration, deployment, cutover,



validation, and rollback activities.
- Troubleshoot production compatibility and application issues during migration and stabilization.
- Maintain technical documentation related to modernization, migration decisions, breaking changes, dependencies, compatibility, remediation and validation results.
- Collaborate with Cloud, Data, QA, Security, and DevSecOps teams to resolve cross-functional issues.

Must-Have Skills

- 5+ years of hands-on Java backend development experience.
- Strong experience with Java 17 and Java application modernization.
- Solid experience with Spring / Spring 5 and an understanding of the javax vs jakarta namespace distinction and its migration implications.
- Experience with Java 8 to Java 17 migration or equivalent runtime modernization .
- Strong experience with Maven and/or Gradle .
- Experience with REST APIs and backend service development .
- Experience with dependency upgrades and CVE/security remediation .
- Experience with application compatibility testing during runtime/framework upgrades.
- Experience integrating Java applications with HBase and/or Spark .
- Strong understanding of application dependencies and impact analysis.
- Experience with JUnit and Mockito or equivalent unit-testing frameworks.
- Experience supporting production application migration and validation.
- Strong troubleshooting and debugging skills.

Good-to-Have Skills

- Experience with Amazon Corretto 17 .
- Experience with HBase 2.x migration .
- Experience with Spark/Scala integration .
- Experience with OWASP Dependency Check .
- Experience with security scanning and software composition analysis.
- Experience with Activiti or similar workflow/process engines.
- Experience with API compatibility and regression testing.
- Experience with CI/CD-based application deployment.

📌 Senior Java Software Engineer (Chandigarh)
🏢 Trantor
📍 Chandigarh