I will write a spring boot upgrade readiness report for your java app

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Jeff S

About this gig

Java teams on Spring Boot 2.7 or 3.x: find out what the upgrade to Spring Boot 4.1 takes before you start it.


Free support ended on 30 June 2023 for Spring Boot 2.7 and on 30 June 2026 for 3.5, the last 3.x line.


WHAT YOU GET (a PDF, within 3 days)

The verdict in three lines

Your versions next to what 4.1 manages

The upgrade path in steps

Every blocker, ranked, with where it is and the fix

Behaviour changes to test

An effort estimate, marked as an estimate

What was not checked


See the sample in the gallery: a real five-page report on the public PetClinic app, 2.7.3 to 4.1.


WHAT I NEED

Your build file (Maven or Gradle)

Your dependency tree

The output of one command that counts framework imports. It prints package names and counts, none of your code.


No repo access. No source code. No call.


WHAT THIS IS NOT

I don't do the upgrade or run your app. The report is advice from one engineer's reading of your build against the official Spring Boot migration guides, with no warranty. It is not a security audit.

Get to know Jeff S

Jeff S

Java and Spring Boot engineer

  • FromUnited States
  • Member sinceNov 2026
  • Languages

    English
I'm Jeff, a Java engineer. I've spent decades building the systems big companies run on. Here I do one thing: I read your Spring Boot build and write up what stands between your app and a supported version. You get the blockers ranked, the behaviour changes to test, the order to do it in and a rough size for the work. Fixed price, three text files from you, no repo access and no calls.