Senior Ruby on Rails developers, based in the US, working your hours
Rails apps, upgrades, and rescues, built by US engineers who have kept large Rails codebases healthy for years.
- Every engineer lives and works in the US
- Works your hours, joins your standups
- NDA and full IP assignment from day one
Book your call: tell us what you need
"NextGen scaled us from 2 to 7 dedicated engineers in under a quarter. Enterprise-grade capacity, zero agency drag."
"Their R&D tax credit workflow platform paid for itself in the first filing season."
"AI-native from day one. Our IRS transcript pipeline runs 24/7 without a human in the loop."
"Property tax appeals used to take weeks. Their comp analysis tooling turned it into hours."
"The AI intake agent handles our tier-1 patient calls with a hand-off cleaner than our old call center."
"POS, inventory, ordering — all unified. We finally have one source of truth across every location."
"The procurement platform paid for itself in the first quarter of use."
"They shipped our matching engine in 6 weeks. Our old team would've taken 6 months."
"Enterprise-grade delivery without the enterprise-agency price tag."
"Their team plugged into our sprint on day one. Zero ramp time."
"NextGen scaled us from 2 to 7 dedicated engineers in under a quarter. Enterprise-grade capacity, zero agency drag."
"Their R&D tax credit workflow platform paid for itself in the first filing season."
"AI-native from day one. Our IRS transcript pipeline runs 24/7 without a human in the loop."
"Property tax appeals used to take weeks. Their comp analysis tooling turned it into hours."
"The AI intake agent handles our tier-1 patient calls with a hand-off cleaner than our old call center."
"POS, inventory, ordering — all unified. We finally have one source of truth across every location."
"The procurement platform paid for itself in the first quarter of use."
"They shipped our matching engine in 6 weeks. Our old team would've taken 6 months."
"Enterprise-grade delivery without the enterprise-agency price tag."
"Their team plugged into our sprint on day one. Zero ramp time."
Sound familiar?
- Hiring a senior Ruby on Rails developer full-time is taking months.
- Your Ruby on Rails codebase has grown messy and every change breaks something else.
- Offshore hand-offs and time-zone gaps turn one-day fixes into week-long threads.
- You need someone senior enough to make decisions, not just close tickets.
What our Ruby on Rails engineers build
Rails products
Features shipped fast on a clean, tested Rails codebase.
Rails upgrades
Old Rails and Ruby versions upgraded without stopping work.
Performance
Slow endpoints, N+1 queries, and background jobs fixed.
How it works
- 01
15-minute call
Tell us what you need built or fixed and where it's stuck.
- 02
Matched profiles
You meet US-based engineers with directly relevant work behind them.
- 03
You interview
Run your own technical interview. You only move forward with people you pick.
- 04
They start shipping
Onboarded into your repo, tools, and review process, with a weekly written update.
Hire US-based Ruby on Rails developers to maintain Rails applications, plan upgrades, improve PostgreSQL queries, and build APIs or Hotwire interfaces. Projects can range from a Rails 7.1 monolith using Sidekiq to a Rails 8 application using Solid Queue. NextGen Coding Company engineers are senior, with many bringing more than ten years of experience.
Rails maintenance often means untangling callbacks, finding N+1 queries, and deploying schema changes without breaking running workers. Bundler dependencies, Ruby compatibility, and background-job behavior deserve as much attention as controller code. Every engineer lives and works in the US, follows your working hours, and joins your standups. We sign an NDA and full IP assignment before accessing your code.
Frequently asked questions
- How should we plan an upgrade from Rails 7 to Rails 8?
- Start by checking Ruby requirements, gem compatibility, and test coverage for critical workflows. Rails 8 requires Ruby 3.2 or newer. Move through appropriate intermediate releases, resolve deprecations, and review framework defaults separately from dependency updates. Exercise authentication, serialized attributes, assets, and background jobs in staging before scheduling the production rollout.
- Can a Rails developer improve slow PostgreSQL queries?
- Yes, but first identify whether time is spent in database execution, excessive queries, or Ruby object allocation. Use ActiveSupport instrumentation, query logs, and PostgreSQL EXPLAIN ANALYZE where appropriate. Fixes may involve eager loading, better indexes, narrower selects, or pagination. Tools such as Bullet can flag N+1 patterns but do not replace production-representative investigation.
- Should our Rails application use Sidekiq or Solid Queue?
- Sidekiq uses Redis and has an established operational model for background processing. Solid Queue is database-backed and is the default Active Job backend in Rails 8. Compare throughput requirements, scheduling, database capacity, and existing operations. Either choice still needs idempotent jobs, retry policies, and protection against executing work before its transaction commits.
- Is Hotwire a good alternative to a React frontend for Rails?
- Hotwire, including Turbo and Stimulus, fits many server-rendered workflows such as forms, account settings, and internal tools. React may suit interfaces with substantial client-side state or rich interaction independent of navigation. Review the actual screens and team maintenance needs. A Rails application can also use targeted React components without replacing its entire view layer.
- How do we evaluate a senior US-based Rails developer?
- Ask candidates to reason through a risky migration, an N+1 query, and a job that runs twice. Discuss RSpec or Minitest coverage alongside deployment and rollback decisions, not just Rails conventions. Most teams interview matched engineers within a week of the first call. Book a 15-minute call to describe your application and priorities.
- Are your developers really based in the US?
- Yes. Every engineer lives and works in the United States. No offshore subcontracting and no hand-offs to another team. That's written into the contract.
- How fast can someone start?
- Most teams interview matched engineers within a week of the first call. Start dates depend on your interview process.
Related reading
- How to hire a software developer
What to check before you sign.
- Hiring test for senior engineers
How to vet senior talent fast.
- Senior engineer salary guide 2026
What the market pays.
- Onshore vs offshore vs nearshore
The honest tradeoffs.
- Forward deployed engineers
Need an owner, not just capacity?
- Resource library
Every guide and benchmark we publish.
Start your project request
Tell us what you're building — engineering capacity, AI, QA, cloud, or a fixed-scope software engagement. Our NYC team responds within one business day.
- Response within 1 business day
- 30-minute discovery conversation
- Recommended engagement model & pricing
- NYC-focused — in-person available
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