Rails Developers for New Products and Old Codebases
Ruby on Rails engineers for fast product build, API back ends, and the considerable amount of Rails running in production on versions that badly need upgrading.
Is Ruby on Rails still worth using, and what should you screen Rails developers for?
Rails remains one of the fastest routes from idea to working product, with strong conventions and a mature ecosystem, and it is well suited to conventional web applications and APIs. A great deal of production Rails is also several major versions behind, so upgrade experience matters as much as greenfield ability. Screen for ActiveRecord query awareness, background job design with Sidekiq, test discipline with RSpec, and experience upgrading Rails across major versions. Anviam staffs all of these.
- Time to onboard
- 5–10 business days
- Common brief
- New product build or Rails upgrade
- Rails versions
- Legacy 4.x through current 7.x
- Minimum term
- 1 month, rolling
- Overlap hours
- 4+ hours with US, UK and AU time zones
- Trial period
- Two-week replacement window
Most Rails Work Today Is Rescuing Rails Written Years Ago
Rails had a long period as the default choice for web products, which means an enormous amount of it is still running in production — often on Rails 4 or 5, on end-of-life Ruby versions, with gems no longer maintained and a test suite that has been red for so long nobody runs it. These applications still generate revenue, and they are increasingly difficult and expensive to hire for.
That makes upgrade capability at least as valuable as greenfield ability. The work is methodical rather than glamorous: get the test suite green, upgrade Ruby, then step through Rails versions one at a time addressing deprecations, replacing abandoned gems as you go. It is very doable when approached incrementally and very risky when attempted as one jump. We screen specifically for engineers who have done it.
What Our Rails Developers Cover
Screened for both new product work and the realities of older Rails codebases.
Rails Application Development
Idiomatic Rails with sensible service objects, avoiding both anaemic models and thousand-line ones.
ActiveRecord & Query Performance
Eager loading, index awareness and finding the N+1 queries that ActiveRecord makes easy to write.
Background Jobs
Sidekiq job design with idempotency, retries and dead-letter handling rather than optimistic enqueuing.
Rails & Ruby Upgrades
Stepwise major-version upgrades, deprecation handling and replacing unmaintained gems.
RSpec Test Discipline
Meaningful coverage on business logic, and rehabilitating suites that have been ignored for years.
API-Only Rails
Rails as a JSON API back end for mobile clients and separate front ends, with versioning and serialisation.
Ruby & Rails Stack We Staff
When to Hire Rails Developers
Rapid Product Build
Early-stage products where Rails conventions genuinely compress time to a working application.
Legacy Rails Upgrade
Applications on Rails 4 or 5 carrying security exposure and hiring difficulty.
Inherited Codebase
A Rails application whose original team has gone, needing someone to take ownership.
Performance Work
Slow Rails applications where query patterns and N+1 problems are the actual cause.
API Back End
Rails serving mobile and front-end clients, with versioned JSON APIs and background processing.
Team Extension
An existing Rails team needing senior capacity without a permanent hire.
The Terms, in Writing
Most problems with contract engineering come from things nobody agreed in advance. These are ours, contractually, for every role.
Talk to Our Team- You interview every candidate and can decline anyone, with no pressure to accept a shortlist
- Engineers are our salaried employees, dedicated to you alone and never split across clients
- Replacement within two weeks at our cost if someone is not working out
- Rolling one-month term with 30 days' notice, no exit fee and no minimum contract length
- Code stays in your repository and your cloud accounts throughout the engagement
- Four or more hours of daily overlap with your working hours as standard
From Request to Contributing Engineer
Role Brief
A short call on the stack, seniority, domain and team context, then a written role summary.
Profiles Within 3–5 Days
Matched candidate profiles with real project history, not anonymised generic CVs.
You Interview
Technical and cultural interviews on your own process. Decline anyone, and we send more.
Onboard in 5–10 Days
Access, environment setup, codebase walkthrough and a first small ticket shipped in week one.
Work in Your Cadence
Your board, your standups, your review standards, reporting to your lead rather than to us.
Common Questions About Hiring Rails Developers
For conventional web applications and APIs, yes. Rails remains one of the fastest frameworks to build a complete product in, its conventions reduce decision overhead, and Hotwire means you can build interactive interfaces without a separate front-end application. The considerations are a smaller hiring pool than JavaScript or Python, and less suitability for compute-heavy or very high-concurrency workloads. For a small team shipping a business application quickly, it is still a strong choice.
Yes, and stepwise rather than in one jump. The sequence is usually: get the test suite passing so regressions are visible, upgrade Ruby to a supported version, then move through Rails major versions one at a time, addressing deprecations and replacing unmaintained gems at each step. Each version lands as a deployable release. Applications with no working test suite need that built first, which is often a third of the effort and is not optional.
We write characterisation tests around current behaviour before changing anything — capturing what the application does today, including behaviour that looks wrong but that users depend on. Coverage starts with the highest-risk paths rather than attempting everything. It feels slow at first and it is what makes the subsequent upgrade or refactor safe rather than a series of production surprises.
Rarely, and usually not for the reason given. Teams often propose rewriting because the codebase is unpleasant, but the unpleasantness is normally accumulated complexity rather than the framework, and it will accumulate again in a new language. Upgrading Rails, adding test coverage and refactoring the worst areas typically costs a fraction of a rewrite and carries far less risk. We would only support a rewrite where the workload has genuinely outgrown Ruby's concurrency model or where the domain has changed fundamentally.
For Hotwire, Turbo, Stimulus and server-rendered views, yes, and for many Rails applications that covers everything needed. Where you have a React or Vue front end consuming a Rails API, capability varies by individual and we will be specific about each candidate rather than claiming uniform breadth. For a demanding front end, a dedicated front-end engineer alongside is the better arrangement.
Profiles within three to five business days and a productive engineer within five to ten of you accepting. For legacy codebase work we build a short discovery period into the first week — reading the code, running the test suite, documenting what is actually there — because diving straight into changes on an unfamiliar and untested Rails application is how avoidable incidents happen.