Rails Upgrade Consultant
for Legacy SaaS Apps
Upgrade your Rails application with less production risk. I help SaaS teams plan and execute Rails 6.x and Rails 7.x upgrades across older codebases, fragile dependencies, background jobs, caching, and deployment workflows.
Available for US, UK, Europe, Canada, Singapore, and remote-first teams.
Rails upgrades become risky when the app has been running for years
Older Rails apps usually carry old gems, custom patches, limited tests, unclear ownership, fragile background jobs, layered caching, hand-rolled deployment scripts, and production behavior that is hard to reproduce locally. Each one of those is a small upgrade risk on its own — together, they're what stalls upgrades for months.
- Rails version is behind and blocking new work
- Upgrade has started but keeps breaking things
- There is little or no test coverage
- Old gems or dependencies are no longer maintained
new_framework_defaults changes are unclear- Sidekiq, Redis, ActiveStorage, or caching may break
- Worried about production deployment and rollback
- Senior Rails developer left — nobody fully owns the upgrade
What I help with
Four areas covered on every Rails upgrade engagement. Some projects need all of them, some need only one or two — the audit decides.
A — Planning
Upgrade planning
- Current Rails and Ruby version review
- Gem and dependency audit
- Risk areas identified before touching code
- Upgrade path and step-by-step sequencing
B — Framework
Framework defaults & config changes
new_framework_defaults review and staged enablement- Config changes between Rails versions
- Digest and hash changes (sessions, cookies, signed IDs)
- Mailer and ActiveSupport behavior changes
C — Production
Production-risk review
- Deployment flow and release process
- Rollback plan and recovery checklist
- Logs, metrics, and monitoring coverage
- Smoke checks and high-risk user flows
D — Infrastructure
Background jobs, caching & storage
- Sidekiq and Redis compatibility with target version
- Cache key and expiry risks under new defaults
- ActiveStorage and image processing checks
- Vips vs MiniMagick considerations where relevant
How a Rails upgrade engagement usually starts
Most upgrade work starts with a short technical review. I look at the Rails and Ruby versions, the Gemfile, framework defaults, background jobs, caching, deployment flow, and known production risks. After that, I provide a practical upgrade path — what to change first, what to test, what to monitor, and how to reduce deployment risk on the way through.
What you get
Concrete deliverables, not a slide deck.
- Upgrade risk assessment for your specific app
- Prioritized upgrade plan with staged steps
- Gem and dependency notes — what to replace, what to keep
- Framework default and config review
- Deployment and rollback checklist
- Hands-on help implementing the upgrade changes if needed
- Written notes and clear next steps for your team
This is a good fit if
- You have an existing Rails SaaS app running in production
- You are on Rails 5, 6, or early Rails 7 and need to move forward
- You have limited test coverage on the critical paths
- You use Sidekiq, Redis, caching, or ActiveStorage
- Your team needs senior Rails help without hiring full-time
- You want a practical upgrade plan — not a rewrite
Planning a Rails upgrade?
Send me a short description of your current Rails version, target version, and biggest concern. I'll reply with the most sensible next step.
Book a Rails upgrade consultation