How We Build Scalable Web Apps: Our Proven Tech Stack

Whether you’re building from scratch or upgrading an existing system, choosing the right development stack is key.

At mmtm, we specialise in custom web app development using Ruby on Rails - a framework trusted by brands like Shopify, Airbnb and the UK Government and more.

A showcase of some popular apps that are built on Ruby on Rails.

Our Go-To Web App Stack

Combining Ruby on Rails with, modern JavaScript, PostgreSQL, Heroku hosting, and AWS asset storage, your application is setup for success. That is why our usual tech stack for building secure, high-performance apps is:

Ruby on Rails - powerful, mature modern web framework
HTML + CSS - for modern, mobile first responsive user interfaces
JavaScript (JS) - with frameworks such as Hotwire, React and Vue for a slick front-end
PostgreSQL - reliable and scalable open-source database
Heroku - managed cloud platform with enterprise-grade reliability and scaling
Amazon Web Services (AWS) - fast, secure file and asset delivery

This combination allows for rapid development, efficient scaling, and smooth deployment - ideal for startups to businesses and budgets of all sizes looking to grow quickly.

Why Ruby on Rails?

As a leading UK web development agency, we’ve seen first-hand how fast and secure Rails can be compared to alternatives such as Laravel, PHP, or Django. It enables:

Fast, Cost-Effective Delivery

Rails encourages rapid development with a focus on convention over configuration - helping you launch faster and keep development costs under control.
Rich, Built-In Functionality

Enjoy a robust foundation with features like authentication, background jobs, admin interfaces, and RESTful APIs, all without reinventing the wheel.
Scalable and Sustainable Architecture

Rails apps are built to scale smoothly, supporting your growth from MVP to full-scale platform - while remaining easy and low cost to maintain and evolve over time.
Clean Code and Industry Standards

Rails promotes well-structured, readable code and follows widely accepted best practices, making it easier for teams to onboard, maintain, and extend your application in the future.
Flexible and Customisable

The modular nature of Rails makes it easy to tailor functionality, user experience, and integrations as your product vision evolves.
Thriving Open-Source Ecosystem

Accelerate development and unlock new features by leveraging thousands of actively maintained libraries (gems), vetted by the global Rails community.
Security by Default

Rails includes built-in protections against common web vulnerabilities like SQL injection, XSS, and CSRF, helping you maintain a secure foundation from day one.

Security and Hosting You Can Trust

If you’re handling user data, security should be a non-negotiable. Our stack prioritises it at every level with:

Built-in Rails protections - read more
Heroku’s secure cloud infrastructure - read more
AWS’ encrypted, multi-regional storage - read more

Together, they provide peace of mind and help meet data protection standards without extra engineering overhead.

Ready to Scale From Day One

Whether you’re launching a minimum viable product (MVP) or supporting thousands of users, our process and setup is:

Easily extendable
Avoids price traps as you scale
Built to mitigate costly rewrites down the line

We’ve helped clients grow with their needs from pilot programmes to enterprise rollouts without rebuilding from scratch.

Want to Build Your App on the Best Technology Stack?

Our team at mmtm is ready to help.

Get in touch to find out how we can support your next digital product.

Interested in Upgrading or Maintaining Your Ruby on Rails App?

We also offer web app maintenance and feature development. If you’re looking for a Ruby or Rails version upgrade or hoping to expand your platform, we can help you modernise safely and sustainably.