HIRE WITH US
Hire Ruby on Rails Developers
Kultrix Ruby on Rails developers build production-ready web applications and APIs with the speed that convention-over-configuration enables.
Start in 1-2 Weeks
Senior Engineers Only
7+ Years Experience
NDA

HIRE WITH US
Kultrix Ruby on Rails developers build production-ready web applications and APIs with the speed that convention-over-configuration enables.
Start in 1-2 Weeks
Senior Engineers Only
7+ Years Experience
NDA

EXPERTISE
WHAT WE DO
We build JSON APIs in Rails, RESTful endpoints with strong parameter validation, Pundit-based authorisation, serialisation with active_model_serializers, and OpenAPI documentation.
We build multi-tenant SaaS products with Rails, Stripe billing, Devise authentication, role-based access, background email queues with Sidekiq, and admin panels with ActiveAdmin.
We implement Turbo Drive, Turbo Frames, and Turbo Streams for dynamic, SPA-like interactivity within a Rails app, without writing a separate JavaScript frontend or maintaining two codebases.
We implement reliable background processing with Sidekiq, scheduled jobs, retry logic, dead-job queues, and Sidekiq Web UI monitoring, for emails, webhooks, and async tasks.
We upgrade legacy Rails applications from older versions, refactor tangled codebases, introduce test coverage, and migrate databases, preserving existing functionality throughout.
We eliminate N+1 queries using Bullet, optimise ActiveRecord eager loading, add database indexes for slow queries identified in production logs, and benchmark with rack-mini-profiler.
WHO THIS IS FOR
Whether you are a startup or enterprise, we have the right engagement for you.
Fast-track your MVP with senior talent. Launch on time and within budget.
Improve performance, UX, and features of your existing product with expert help.
Augment your team with senior specialists to accelerate feature delivery.
OUR APPROACH
Choose the cooperation format that best fits your business goals and development velocity.
Fast launch to test your idea and gather user feedback with minimal investment.
What's included
Timeline Delivery within 4–8 weeks
Complete cycle from initial strategy and design to final launch.
What's included
Timeline Delivery within 3–6 months
Scale your team with expert developers to accelerate development.
What's included
Timeline Flexible / Long-term
OUR HIRING PROCESS
Tell us about your project goals, timeline, and team needs. We'll set up a free consultation to dive deeper into your requirements.
Based on your project, we recommend the ideal team structure, engagement model, and technology approach — tailored to your goals and budget.
We handpick the best-fit professionals from our senior talent pool. You'll meet them, review their experience, and give the green light.
Your team onboards within 48 hours. We align on workflows, set up communication, and start delivering results from week one.
As your project evolves, we scale your team, add new specialists, or adjust scope — all within your existing partnership.
INDUSTRIES
Our Ruby Developer professionals build solutions across various sectors.
Data-driven commerce solutions that improve journeys, boost sales, and optimize operations.
Data-driven commerce solutions that improve journeys, increase sales, and optimize operations.
Reliable medical platforms that protect patient data, simplify workflows, and support clinical accuracy.
Product-driven platforms that enhance workflows, automate processes, and scale with your business.





start with us
Expert professionals ready to join your team and deliver results.
CASE STUDIES
Testimonials
What impressed us most was how Kultrix handled the full stack - frontend, backend, and mobile - with one cohesive team. Communication was clear, delivery was predictable, and the final product exceeded what we initially scoped.
Co-CEO
Kultrix built both our web platform and mobile app from scratch. Their team understood the complexity of our industrial workflows and translated them into clean, intuitive interfaces. We launched on time and our operators adopted the tools immediately.
Co-CEO
Kultrix handled everything for us - landing page, dashboard, mobile app, and even a Chrome extension. Having one team own the entire product surface meant everything felt connected and consistent. They shipped fast and the quality speaks for itself.
CEO, Ping Proxies
Kultrix has been our go-to partner for multiple projects - from marketing websites to full mobile applications and backend systems. They scale up when we need speed and maintain consistency across every project. Reliable, fast, and technically strong.
CEO, Volume Apps
Working with Kultrix on our mobile app and backend was seamless. They brought strong product thinking to every sprint, not just code. When priorities shifted, they adapted quickly without losing momentum. Exactly the kind of partner a product team needs.
Product Lead, Pelago
We needed a team that could handle mobile development, server infrastructure, and AI features all at once. Kultrix delivered on all three fronts. Our fitness platform went from concept to production in under four months with zero compromises on quality.
CEO, Fitblast

start with us
FAQ