Ruby on Rails development agency
Build a new product, extend an existing Rails application or take over a system your organisation depends on. Our UK-based senior team combines Rails engineering with UX expertise and product oversight, working alongside your team from initial assessment through delivery and ongoing support.
What you can expect
- A delivery plan grounded in your codebase
- Tested features and integrations
- Clear ownership of releases and ongoing care
Senior specialists in engineering, design and delivery.
How we assure qualityWhat we can help with
- New Rails application development
- Existing application improvements
- APIs and third-party integrations
- Performance and database optimisation
- Technical assessment and takeover
Why choose Bit Zesty as your Ruby on Rails development agency?
You need a partner who can understand the code and the business behind it. We have been building and maintaining software since 2009, working alongside in-house teams and taking responsibility for applications inherited from other suppliers.
- Experience with live systems: for Easol, we worked within the existing engineering team on Rails upgrades, permissions and performance. Some customers’ sites loaded in half the time.
- A practical approach to legacy code: at Enterprise Nation, we stabilised and improved the existing service incrementally because the business could not wait for a full rebuild.
- Clear delivery responsibilities: we agree priorities, review progress with you and make technical risks visible. Read our technical assurance approach for security, testing and support arrangements.
Ruby on Rails Application Development
Build around the work your application needs to do
We develop customer portals, internal tools, e-commerce platforms and digital services. We start with the people using the application, the processes it supports and the systems it must connect to. That gives your team a basis for deciding what to build first and where further investigation is needed.
Our Ruby on Rails development services cover:
- Product definition and design: user research, prototypes and a prioritised scope before committing to a full build.
- Application development: maintainable Rails code, automated tests and regular reviews of working software.
- APIs and integrations: connecting payments, CRM, ERP and other services, with attention to data integrity and failure handling.
- Security and permissions: access controls, dependency updates and testing appropriate to the application’s risks.
- Performance: investigating slow requests, database queries and hosting constraints before choosing an optimisation.
Ruby on Rails Support and Maintenance
Keep improving the application you already rely on
An existing application needs more than occasional fixes. We can take over support, address technical debt, upgrade Ruby and Rails, and deliver new features alongside maintenance.
We assess the codebase, dependencies, hosting and operational risks before agreeing a takeover plan. Monitoring, response times, escalation and out-of-hours coverage are agreed for your service; they are not assumed to be included in every engagement.
Explore Ruby on Rails support and maintenance.
Ruby on Rails Rescue Services
Establish what is wrong before committing to a rewrite
If delivery has stalled or the system is unreliable, we begin with a code and technical assessment. We explain which issues need immediate attention, what can be improved in place and where replacement may be justified.
We agree a sequence of work with you: stabilise urgent problems, improve test coverage, address the highest-priority risks and document the system for the people who will maintain it.
See how we approach project rescue.
Ruby on Rails Team Augmentation
Work with your team, in your delivery process
If you already have a technical lead and a roadmap, we can add Rails engineering capacity around a defined need. We agree responsibilities, code review, communication and knowledge transfer with your team so that progress remains visible and the application stays maintainable.
Our Easol client story shows how this worked within an established product and engineering team.
Our Ruby on Rails Technology Stack
We work with Ruby on Rails, RSpec and Sidekiq; Hotwire, JavaScript and React; and databases including PostgreSQL, MySQL and MongoDB. Hosting, deployment and monitoring choices depend on your existing platform, operating requirements and budget.
We assess the tools you already use before recommending a change. A new framework or hosting platform should solve a specific problem and justify the migration effort.
How a Rails engagement starts
- Discuss the application: explain the business need, current constraints, team and deadlines. You do not need a finished specification for an initial conversation.
- Assess the right starting point: this may be discovery for a new product, a technical review of an existing system or a defined piece of development.
- Agree delivery and support: establish scope, responsibilities, estimates, review points and ongoing support before work begins.
What will it cost, and how long will it take?
That depends on the scope, integrations, condition of the codebase and level of assurance required. We discuss these with you before proposing an approach. Where there is substantial uncertainty, an initial assessment helps establish a realistic delivery plan.
Why Choose Ruby on Rails?
Ruby on Rails provides established conventions and libraries for building web applications. It can be a good fit for products that need to evolve, but the framework alone does not guarantee delivery speed or low running costs. Architecture, testing, maintenance and the experience of the team matter throughout the application’s life.
Independent reviews
What clients say
“They were incredibly adaptive. When we gave them feedback they always incorporated that into their work, and they actively tried to adopt our workflow. They were detail-oriented and proactive about mentioning things to us when they saw something that didn't look right.”
“From an internal perspective, our team enjoyed working with their developers, and they helped us to achieve high-quality work.”
Experience in practice
Relevant work

Easol
Staff augmentation to extend the development team for an events e-commerce platform
Worked alongside the EASOL development team to improve performance, develop new features and upgrade their Ruby on Rails application. For some customers, their site loaded in half the time.
Business and Financial ServicesE-commerceEnterprise Nation
Helping the UK’s most active small business network deliver a great digital experience to their 70,000 users
We conducted a code audit and made significant technical fixes to the site. Most importantly, we carried out thorough user research and made vital user experience improvements, delivering a website that better meets their business and member needs.
Business and Financial Services
Plan your next step
Share what the application needs to do, what is holding it back and any deadlines. We can discuss the right starting point, our availability and how we would work with your team.


