Business Applications
Custom Applications
Built around how your people really work.
Some jobs do not fit a standard screen. A warehouse team scanning stock, a clinician working through an assessment or a planner juggling engineers across a region all need an interface designed for that task, not a grid of records with a form behind each one.
We build those interfaces as modern web applications. Most sit on top of platforms you already trust, such as Dataverse or Azure SQL Database. Bespoke means the experience your people get when they use the system, not the platform underneath it, so you never have to reinvent security, hosting and data from scratch.
What we build
Custom development is the right answer when nothing off-the-shelf fits the way the work is actually done. Typical examples:
Task-focused front ends over Dynamics 365
Guide someone through a job rather than making them navigate the records beneath it.
Field and mobile applications
For people on site, on the road or on the factory floor.
Customer and supplier portals
Where a standard portal cannot deliver the experience you need.
APIs
Let your systems, partners and products exchange data in a controlled, documented way.
Business platforms
Where your process is the product and needs to be built exactly as you run it.
Coded extensions inside Dynamics 365
Server-side C# plugins, Custom APIs and PCF controls, including our own components, that give the standard application behaviour it cannot provide on its own.
Dynamics 365, re-imagined
Many of our clients already run Dynamics 365 and the data and processes inside it are sound. The screens your people interact with are where it falls down, because the standard interface was designed for looking things up, not for working through a task at pace.
We now build custom front ends that sit directly on Dataverse and are usually seamlessly hosted within Dynamics 365 itself. These custom components use the same data, security and business rules as the rest of the system, ensuring your team gets an interface shaped around their day while Dynamics 365 continues to do the heavy lifting underneath.
AI-assisted engineering has changed what this costs. Interfaces that once only made sense for very large organisations are now realistic for mid-sized ones, because AI accelerates the build while our consultants make the decisions about design, architecture and quality. We are open about where AI is used and everything we hand over is understood, tested and owned by a named member of our team. It has also changed discovery, as we can now put a clickable prototype of your application in front of you, often in as little as one to five days.
How we build
Bespoke should not mean fragile. Everything we build is designed to be maintained long after go-live.
A modern, typed front end
React and TypeScript, which catch errors early and keep a growing codebase manageable.
A consistent component library
Built on Material UI, so screens behave predictably and meet WCAG 2.1 AA accessibility standards.
Well-defined services
ASP.NET Web API or Node.js, each described with an OpenAPI specification so other systems and developers know exactly how to use them.
Secure sign-in
Microsoft Entra ID, Entra External ID, Auth0 or passwordless sign-in, depending on who your users are.
Hosted on Microsoft Azure
Every change made on its own branch in Azure DevOps, tested before release and documented, so the application never depends on one person's knowledge.
You own what we build
Once the work is paid for, the application belongs to you and any of our reusable components inside it come with a perpetual, royalty-free licence to use, modify and maintain them.
The stack behind it
Robust services that hold business logic and connect to your data Secure sign-in for your applications, including single sign-on and two-step verification Complex business processes run server-side inside Dataverse and exposed safely to other components A consistent, accessible look and feel across every screen A managed relational database where an application needs its own data store The governed data platform behind Dynamics 365, used as the foundation for many of our front ends Customers, suppliers and partners can sign in securely, without separate passwords to manage Secure sign-in for staff, customers and partners, including passwordless options Lightweight services for real-time and integration-heavy work A standard way to query data, including directly from Dataverse A published contract for each API, so integrating with it is straightforward Custom components that extend the standard Dynamics 365 screens Fast, responsive screens that work the same on desktop, tablet and phone Catches mistakes before they reach users and keeps the code maintainable
ASP.NET Web API
Auth0
C# Plugins & Custom APIs
Material UI
Microsoft Azure SQL Database
Microsoft Dataverse
Microsoft Entra External ID
Microsoft Entra ID
Node.js
OData
OpenAPI
PCF Controls
React
TypeScript
Sound familiar?
We tend to be the right call when:
Fighting the screens
The system holds the right data, but the screens slow your team down.
Work on the move
People on site or on the road are stuck with screens built for a desk.
Nothing fits
No off-the-shelf product fits the way the work is really done.
Access for outsiders
Customers, patients or suppliers need their own way into your process.
Some of these have names. If one is hitting home, this is where it leads:
What it unlocks
Get the foundations right and this is what becomes possible:
It rarely stops at custom development
A real solution usually pulls in more than one of our skills. We will not steer you towards one product over another, we build what the process needs.
Business applications
Dynamics 365
Process-matching applications on Microsoft's own business platform.
Explore →Apps and automation
Power Platform
The low-code layer that connects your systems and removes the manual work.
Explore →Integration
Integration & Automation
Systems that talk, so your people do not have to.
Explore →We have done this before, see what our clients say
Read the latest thoughts from our team
Start with a conversation
Tell us about the task your team struggles to do in the system you have. We will help you work out whether it needs a new interface, a better configuration or something else entirely.
Book a Call
Or call 03333 209 969 · enquiries@circyl.co.uk