I will audit and plan your ruby on rails upgrade for a legacy app

Stuck on an old Rails version and not sure what an upgrade will break? I audit your app and hand you a clear, prioritized plan. No vague "it depends".

You get a written report covering:

- Current Ruby/Rails versions and end-of-life status

- Gems that will block the upgrade (abandoned, incompatible, replaceable)

- Deprecations and removed APIs your code actually uses

- What your test suite really covers

- A recommended upgrade path (e.g. 5.2 > 6.0 > 6.1 > 7.0) with an effort estimate per step

Standard adds an executable plan: gem-by-gem replacement matrix, a dual-boot setup as a pull request so your team upgrades safely, config diffs and a test plan. Premium executes one version upgrade on a branch with a green test suite and handover notes.

About me: senior full-stack engineer (Ruby on Rails, React, Go) who maintains and modernizes mission-critical legacy systems in the oil and gas industry, where downtime is not an option. Read-only repo access is enough; I never need production access. UTC-3, overlapping US business hours.

Message me before ordering if your app is very large (100k+ lines) so I can confirm the scope.