Hire pre-vetted Ruby on Rails Developers

Most Rails hires can scaffold a CRUD app over a weekend. Keeping a Rails codebase alive, fast, and secure five years into feature growth is a different skill entirely, and it is the one most job boards do not screen for. By then the app has accumulated forgotten gems, N+1 queries nobody flagged in review, and a test suite that takes longer to run than the original build took to ship. Cortance matches you with Ruby on Rails developers who have already carried a production app through that stretch, not just built the first version of one.

Who keeps a five-year-old Rails app running fast?

Karen Hakobyan, a senior fullstack engineer in our network with nine years of experience and Ruby on Rails as a core skill, has spent that career across fintech, cybersecurity, and telecom systems, the kind of long-lived, compliance-heavy codebases where a rushed migration gets expensive fast. That is the profile we look for: engineers who have owned an API's backward compatibility, not just written its first version. Several of our Rails engineers now pair AI-assisted code review with their RSpec suites, catching regressions before a reviewer ever opens the pull request, which shaves real hours off release cycles without touching how the codebase is architected.

New Rails build vs. an inherited one

Starting from zero? A greenfield Rails MVP rewards developers who move fast with conventions and ship a working product in weeks. Picking up someone else's app? That calls for someone who reads an unfamiliar schema, untangles old callback chains, and upgrades a Rails version without breaking payment flows already in production. We ask which situation you are in before we shortlist anyone, because the two skill sets barely overlap and a great greenfield builder can struggle badly on a ten-year-old monolith.

Look past the framework name

Rails experience alone tells you little. Our developers work daily with Active Record, Sidekiq for background jobs, Action Cable for real-time features, and PostgreSQL as the default database, plus RSpec and CI pipelines that catch problems before staging. When your project depends on Redis caching, GraphQL APIs, or a move from Heroku to AWS or GCP, we filter for engineers who have already done exactly that, not generalists who list Rails as one line among many skills. For teams rebuilding a monolith into services, we also screen for API design experience specifically, since that decision shapes the codebase for years after the migration itself is done.

Three ways to add Rails expertise this month

1. A dedicated Rails team that owns delivery end to end, from sprint planning to production releases and on-call rotation.
2. A senior Rails architect who refactors legacy code, plans version upgrades, and designs the API layer your product will run on next.
3. Staff augmentation that slots one or two Rails developers into your existing team within days, without disrupting how your team already works.

Most greenfield teams start with staff augmentation and only bring in an architect once the app is large enough to need one; most modernization projects need the architect from day one, before the first refactor gets scoped.

Every developer on this list clears the same technical vetting process before we introduce them: a live coding review, an architecture discussion, and a check of past production work, so you are not the one running that screen yourself.

Tell us what your Rails app needs to do next, whether that is a new build or five years of accumulated technical debt, and we will send matched developer profiles within days.