Senior Spring / Java Migration Engineer

Role Summary

ByteCrew Technologies is hiring a Senior Spring / Java Migration Engineer for its Spring Framework Modernisation Practice. The role is hands-on — executing upgrades, fixing breaking changes, writing regression tests, and shipping migrated code into client repositories on sprint cadence.

Key Responsibilities

- Execute Spring Boot 2.x 3.x and Spring Framework 5 6 upgrades across client application portfolios.

- Run OpenRewrite recipes for automated code transformation; debug recipe behaviour.

- Identify and remediate breaking changes (jakarta.* namespace, removed/deprecated APIs).

- Refactor Maven and Gradle build files, dependency versions, and lock files.

- Write and run integration and regression tests using JUnit 5 and Mockito.

- Address Spring Security CVEs and apply enterprise security patches.

- Commit, code-review, and ship migration pull requests through client Git wo...