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Spring Boot upgrades & modernization

Keep your Java services supported without a risky rewrite.

Planned, tested upgrades of Spring Boot services and their dependencies, so older Java applications stay supported, secure, and deployable.

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Who it is for

For teams running Spring Boot services on older versions that are falling out of support, accumulating dependency warnings, or blocking new work.

The problem

Upgrades get postponed because they touch everything: framework versions, libraries, configuration, and API behaviour. The longer they wait, the larger and riskier the jump becomes.

How we approach it

  1. 01

    Assess before changing

    We inventory the current versions, dependencies, and integration points, and identify what will break and in what order.

  2. 02

    Upgrade in steps

    Large version jumps are broken into smaller, reviewable steps, each with its own build and regression checks.

  3. 03

    Verify behaviour, not just compilation

    API responses, database access, and scheduled jobs are checked against the previous behaviour before anything is promoted.

What you receive

  • Upgrade assessment with risks and sequencing
  • Updated Spring Boot, Java, and dependency versions
  • Regression checks for critical APIs and workflows
  • Notes on configuration and behavioural changes
  • Rollout and rollback guidance

Typical tools: Java · Spring Boot · REST APIs · PostgreSQL

Worth knowing upfront

  • Test coverage of the existing service strongly affects effort and risk; we assess it first.
  • Deployment environments and access are agreed before work starts.
  • We recommend rolling out to a non-production environment before production.

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Common questions

How do you estimate an upgrade?

After reviewing the codebase, versions, dependencies, and existing tests. The assessment itself identifies the steps, which makes the estimate concrete rather than a guess.

Do we need to stop feature work during the upgrade?

Not necessarily. Upgrade steps can be planned around ongoing work, though it helps to agree on a short freeze for the final switch.

Have a project in mind?

Tell us what you are building or what needs fixing. We can work out the sensible next step together.

Discuss your project