Ruby on Rails
The framework that invented modern web productivity.
Rails remains the gold standard for building robust, business-critical monoliths quickly. Convention over configuration, Active Record, Hotwire, and Turbo let you ship working product in weeks without unnecessary frontend complexity.
What Ruby on Rails brings to your project.
Typical use cases: MVPs, product-led SaaS, marketplaces, business applications.
- 01
Convention over configuration: ultra-fast project launch.
- 02
Hotwire / Turbo: SPA-like experience without JavaScript framework overhead.
- 03
Active Record: expressive modeling and migrations.
- 04
Strong community, mature gem ecosystem.
Discover our services and offerings.
Discover our services, expertise and offerings.
Benefit from comprehensive, multidisciplinary expertise to support you through the design, development and maintenance of our applications.
Mobile application
- Scoping and follow-up
- Programming
- Visual design
- Security
- Technical design
- Maintenance
Web application and SaaS
- Scoping and follow-up
- Programming
- Visual design
- Security
- Technical design
- Maintenance
Back-office, CMS and CRM
- Scoping and follow-up
- Programming
- Visual design
- Security
- Technical design
- Maintenance
Complex algorithms and AI
- Technical design
- Sécurité
- Programming and prompting
- Integration
Custom backend
- Scoping and follow-up
- Security
- Technical design
- Maintenance
- Programming
AI-augmented approach, supervised by experts.
We use artificial intelligence as a lever for acceleration and optimisation within our technical processes, while keeping strong human oversight on every strategic phase of the project.
AI improves productivity. It does not replace:
- field experience
- architectural expertise
- understanding business stakes
- technical governance
- complex trade-offs
- cybersecurity
- operational accountability
Beyond visual and technical design, as well as AI-augmented programming, our teams act as a layer of validation, quality control, security hardening and steering, to ensure reliable, scalable deliverables that can operate in real-world environments.
Let's discuss your project.
Describe your project. Our team replies within 24 hours with free technical scoping, along with a clear estimate of costs and timelines. No commitment.
- Reply within 24 hours from a project manager
or engineer.Reply within 24 hours from a project manager or engineer. - Technical scoping and quote, with no fees.
- No commitment, your data stays
confidential.No commitment, your data stays confidential.
Monday to Saturday · 9am to 6:30pm · Standard-rate number.
hello@kosmos-digital.com
Paris · Lyon · Marseille · Nice · Geneva
Your company may qualify for a tax credit equal to 20% of the costs linked to developing its solution.
Free scoping & estimate in under an hour
Describe your project and we'll get back to you with a costed estimate and a roadmap.