Rails 7+ applications
Rails 7.1 / 7.2 with Hotwire (Turbo + Stimulus), import maps, Propshaft, encrypted credentials, Solid Queue / Solid Cache.
Senior engineering · Ruby on Rails
Senior Ruby on Rails engineering for production systems.
Rails for the workloads it was designed for, content-led web apps, marketplaces, B2B SaaS, with Hotwire, Sidekiq, and the modern Rails 7+ tooling that quietly outperforms what the discourse credits it for.
- In production
- 2018+
- Senior bench
- 12+ G6/G9 engineers
- Floor
- G6+ on client work
- Engagement
- Outcome-led, not hourly
Why senior, not contractor
Ruby on Rails in production is a different problem than Ruby on Rails on a laptop.
Rails 7+ with Hotwire (Turbo + Stimulus) is a quietly excellent stack for the workloads it fits: opinionated MVC for content-led web apps, marketplaces, and B2B SaaS where engineering velocity is the value. Prosigns ships Rails for greenfield product-engineering work where the team can absorb Ruby, and for legacy Rails modernization (Rails 4/5 → 7+, Sprockets → Propshaft, jQuery → Stimulus) where the existing app is too valuable to rewrite.
Senior floor
G6+ minimum
Bench depth
12+ G6/G9 engineers
In production
2018+
Engagement
Outcome-led SOW
Where Ruby on Rails ships
6 sub-areas, grounded in shipped engagements.
Specific applications of Ruby on Rails we’ve built and operate. Every example below maps to a real engagement, not a bullet on a stack-card.
01 02 Hotwire-led UIs
Turbo Frames + Streams for SPA-feel without the SPA cost. Stimulus for incremental interactivity. View Components for reusable UI.
03 API-only Rails + GraphQL
Rails as JSON API for separate frontend (React / Vue / mobile) consumers. GraphQL via graphql-ruby where the consumer benefits.
04 Background jobs at scale
Sidekiq Pro / Solid Queue for durable workers, scheduled jobs, retry semantics with DLQ wiring. Cron-replacement done properly.
05 Rails monolith → modular
Packwerk for enforced module boundaries within the monolith. Engines for true separation. The opposite of micro-services-on-day-one.
06 Legacy Rails modernization
Rails 4 / 5 / 6 → 7+, Sprockets → Propshaft, CoffeeScript → Stimulus, ActionCable → Turbo Streams. Phased upgrade with reconciliation.
Stack depth
The Ruby on Rails ecosystem, owned.
Frameworks, libraries, and runtime tools the bench has shipped in production. Not a CV-skim, a working depth.
Core
- Rails 7.1+
- Ruby 3.3+
- Hotwire
- Turbo
- Stimulus
- View Components
Background + cache
- Sidekiq
- Solid Queue
- Solid Cache
- Redis
- GoodJob
Data
- ActiveRecord
- PostgreSQL
- MySQL
- ElasticSearch
- Meilisearch
API + frontend
- graphql-ruby
- JSON:API
- Inertia Rails
- Importmap
- esbuild
Quality + ops
- RSpec
- Minitest
- RuboCop
- Brakeman
- Skylight
- Sentry
Engagement models
Three ways to engage Ruby on Rails engineers.
We don’t bill hourly contractors. Engagements run against outcomes, choose the shape that matches the work.
See engagement models- 01
Fixed-scope
Defined deliverable, fixed price
When the deliverable is clear and the scope is bounded: an MVP, a migration, a discrete platform build. Senior engineering against a written outcome, not against a body count.
- 02
Embedded squad
Senior product team, ongoing
When the work is product-shaped and the cadence is continuous. A senior pod (engineering + design + PM as needed) embedded into your team, with the practice lead co-piloting from HELM.
- 03
Managed services
Steady-state operations
When the system is running and needs ongoing engineering ownership: operations, SLO defense, release management, security and compliance evidence. Monthly retainer against a published SLA.
Selected work
Ruby on Rails engineering that shipped.
Marketplaces
Rails 7 + Hotwire replatform off legacy Rails 4 for a B2B procurement marketplace.
+22%TTI improvementMigrated a 2017-era Rails 4 monolith to Rails 7.1 with Hotwire and import maps. Replaced the SPA frontend with Turbo Frames where the SPA wasn’t earning its keep. Sidekiq → Solid Queue for the worker tier.
Duration · 5 months
Brief us
Reply < 4 business hoursHave a Ruby on Rails workload? Send a brief.
Five fields. Goes straight to the practice lead, not an SDR. We’ll reply with a senior engineer’s read on fit, scope, and the engagement model that suits the work.
FAQ
Questions buyers ask.
Everything below also appears in the proposal and the SOW: no surprises after signing.
When does Rails fit and when doesn't it?
Rails fits for content-led web apps, marketplaces, B2B SaaS, internal tools: workloads where engineering velocity and convention-over-configuration are the value. It doesn't fit for high-throughput async / event-driven systems, for apps where every team writes Ruby reluctantly, or for greenfield where TypeScript end-to-end is the team's existing strength. We’ll tell you which.
Hotwire or a separate React frontend?
Hotwire when the app is server-rendered and SPA-grade interactivity is selective. Separate React/Vue when the frontend has SPA-level complexity that Turbo can’t reach economically, or when the API is consumed by mobile / multiple frontends. Both are credible and we ship both.
Is this staff-aug, or is it engineering-led delivery?
Engineering-led delivery. We don't bill hourly contractors against your JIRA board. Every engagement runs against a defined outcome with a senior engineer accountable from kickoff to operating cutover. If you genuinely need staff-aug, discrete bodies, your management, hourly rates, we'll be honest and route you to a partner that fits.
What seniority floor are we talking about?
G6 minimum (six-plus years in their craft) on every billable hour. Department leads are G9 or G10. We don't flex juniors onto the bench mid-sprint, we don't subcontract to delivery centers, and we don't dilute senior rates with mixed staffing. The bench in the proposal is the bench in production.
How does pricing work?
Three engagement models published at /engagement-models/. Fixed-scope for defined deliverables, embedded squads for ongoing product work, managed services for steady-state operations. Rates depend on seniority, engagement length, and region. Discovery + scoping conversation is free; SOWs are written against deliverables, not bodies.
Where are your engineers based?
Senior-only across Dallas, Doha, Lahore, and Islamabad. We staff against the engagement's needs (timezone, language, regulatory frame), not against arbitrary regional preferences. Most engagements run with a US/EU-aligned core and a follow-the-sun extended bench when the workload warrants it.
Will the engineers I see in the proposal be the engineers shipping the work?
Yes. We name the engineers in the SOW, attach their profiles, and they're on the kickoff. We don't bait-and-switch with senior reviewers and junior execution. If a named engineer needs to roll off the engagement (rare), we surface a replacement from the same seniority tier with explicit handoff.
Talk to a Ruby on Rails lead
Senior Ruby on Rails engineering, accountable from kickoff.
Bring the workload: we’ll bring a senior engineer plus the practice lead most relevant to the work. 30 minutes, no obligation, no junior reps.