Service

Web Application Development Company for Business-Critical Software

We design, build and run secure web applications — customer portals, internal tools and multi-tenant platforms — that replace spreadsheets and outgrown off-the-shelf systems.

What we mean by a web application

A website mainly publishes information. A web application does work: it stores data, enforces business rules, handles logins and permissions, and connects to other systems. Typical examples we build include customer self-service portals, booking and scheduling systems, operations dashboards, approval workflows, B2B ordering platforms and internal tools that replace a tangle of spreadsheets and emails.

How we build web applications

Most of our web applications use ASP.NET Core on the back end with React, Angular or Next.js on the front end, backed by SQL Server or PostgreSQL. That combination is mature, fast and easy to hire for, which matters when you own the code for the next ten years.

We favour a pragmatic architecture:

  • A modular monolith first. Clean module boundaries without the operational cost of microservices. We split services out only when load or team size justifies it.
  • An API-first back end, so a mobile app or partner integration can reuse the same business logic later. See our API development service.
  • Role-based access control and audit trails built in from the first sprint, not bolted on before go-live.
  • Automated tests and CI/CD pipelines so releases are routine rather than risky.

When a custom web app makes sense

Custom development is not always the right answer. If a mainstream SaaS product covers 90% of what you need, use it. A custom web application pays off when:

  • Your process is a genuine competitive advantage and generic tools force you to work around it.
  • You are paying for several overlapping subscriptions and re-keying data between them.
  • You need to offer customers or partners a branded portal with your own rules and pricing.
  • You want to turn an internal tool into a product — in which case read about our SaaS development approach.

What drives cost and timeline

The biggest cost drivers are the number of user roles, the complexity of workflows, the number of integrations (ERP, payments, identity providers) and reporting requirements. A focused internal tool can go live in 8–12 weeks; a multi-tenant customer platform typically takes 4–9 months. Our guide on custom software development cost breaks this down in more detail.

Built to be handed over

You own the source code, infrastructure and documentation. We deploy to your Azure or AWS account, document the architecture and runbooks, and offer ongoing support — or a clean handover to your in-house team if you prefer.

    • What you get

      • Production web application

        Deployed to your cloud account with staging and production environments.

      • Full source code

        In your Git repository, with automated tests and CI/CD pipelines.

      • Technical documentation

        Architecture overview, API reference, runbooks and environment setup guide.

      • Admin and user guides

        Short, task-focused guides and recorded walkthroughs for your team.

    • Industries we serve

      • Professional Services

        Client portals, CRM, project and time tracking, billing and AI-assisted document workflows for consultancies, agencies, law and accountancy firms.

      • Logistics

        Fleet tracking, driver apps, dispatch and warehouse software for logistics, courier and distribution companies that need live visibility and proof of delivery.

      • Finance

        Secure software for lenders, brokers, accountancy practices and fintech teams: client portals, workflow automation, reporting and integrations with financial systems.

      • E-commerce

        Custom e-commerce platforms, headless storefronts and back-office integrations for online retailers who have outgrown templates and manual order handling.

      • Education

        Software for schools, colleges and training providers: admissions, attendance, fees, timetables, gradebooks and parent communication in one connected platform.

      • Healthcare

        Patient booking apps, clinic management systems and secure portals for private clinics and healthcare providers, built with privacy and reliability first.

      • Real Estate

        Property management, lettings, lead handling and tenant portal software for estate agents, landlords and property managers who want less admin and faster responses.

    Benefits

    Why invest in web application development

    • Fits your process, not the other way round

      Workflows, fields and approval rules are modelled on how your team actually works, cutting workarounds and re-keying.

    • Access from anywhere

      Staff, customers and partners use the same secure system from any modern browser, with no installs to manage.

    • One source of truth

      Replace scattered spreadsheets and inboxes with a single database, clear ownership and audit history.

    • Room to grow

      An API-first, modular design means new features, mobile apps and integrations can be added without a rewrite.

    Capabilities

    What we build and deliver

    • Role-based access control

      Granular permissions per role, team or tenant, with optional single sign-on through Microsoft Entra ID or Google.

    • Responsive, accessible UI

      Interfaces built to WCAG 2.2 AA guidance that work equally well on a desktop, tablet or phone.

    • Dashboards and reporting

      Live KPIs, filterable tables and scheduled exports so managers stop asking for weekly spreadsheets.

    • Workflow and approvals

      Configurable multi-step approvals, status tracking and notifications by email or Teams.

    • Integrations

      Connections to ERP, CRM, payment gateways, accounting packages and identity providers via REST APIs and webhooks.

    • Audit trail and history

      Every change is logged with who, what and when — essential for compliance and for resolving disputes.

    Process

    How we deliver

    A transparent, milestone-based process with working software at every stage.

    • Discovery and scoping

      Stakeholder workshops, process mapping and a prioritised backlog with a realistic estimate and release plan.

    • UX and clickable prototype

      Wireframes and an interactive prototype tested with real users before any production code is written.

    • Iterative build

      Two-week sprints with a working demo at the end of each, deployed to a staging environment you can try yourself.

    • Testing and hardening

      Automated and exploratory testing, performance checks, security review and data migration rehearsals.

    • Launch and support

      Phased rollout, user training, monitoring and an agreed support plan for fixes and new features.

    Technologies

    Technology we use for this service

    • ASP.NET Core

      ASP.NET Core is our default framework for secure web applications and REST APIs: fast, cross-platform and well suited to complex business logic and integrations.

    • React

      We build responsive, accessible React front ends for dashboards, portals and SaaS products, backed by clean APIs and a component library you can maintain.

    • Angular

      Angular development for large, form-heavy enterprise applications where consistent structure, strong typing and long-term maintainability across teams matter most.

    • Next.js

      Next.js lets us build fast, search-friendly React websites and web apps with server rendering, ideal for marketing sites, storefronts and SaaS products that need SEO.

    • Microsoft Azure

      We design, build and run applications on Microsoft Azure: App Service, containers, Azure SQL, Functions and Azure OpenAI, with security and cost control built in.

    • .NET

      We use Microsoft .NET to build fast, secure and maintainable business software: web APIs, ERP and POS back ends, background services and cross-platform apps.

    Related work

    Projects we've delivered

    • Fleet Logistics Tracking App

      A driver app and dispatch dashboard for a regional delivery company, with live vehicle tracking, digital proof of delivery and optimised route sequencing.

    • Manufacturing ERP Rollout

      A custom ERP for a mid-sized metal fabrication manufacturer, connecting sales orders, production planning, inventory, purchasing and finance in one system.

    • Smart Education ERP

      A unified education management platform for schools, colleges, universities, and multi-campus institutions, covering admissions, attendance, timetabling, fee management, examinations, academic records, and parent and student portals in one integrated system.

    Case studies

    Results from similar engagements

    • School Group Digital Transformation

      How a five-school trust replaced six disconnected tools with one school management platform and parent app, cutting admin time on attendance and fees by around 40%.

    • AI Support Assistant for a B2B SaaS Company

      How a B2B SaaS company deployed a grounded AI support assistant that resolves 42% of conversations on its own and hands the rest to agents with full context.

    What our clients say

    • Parents now have one app instead of four, and our office teams have stopped spending Monday mornings chasing absence calls. The migration was the part we worried about most, and the trial runs meant there were no surprises on go-live day.

    • We used to lose half a day's takings every time a store's broadband went down. Since the new tills went in, outages barely register, and head office can change a price at lunchtime and see it on every shelf-edge promotion by the afternoon.

    • The assistant resolves the repetitive how-do-I questions and hands everything else to us with a proper summary. Our agents spend their time on the tricky tickets now, and customers get answers at 2am without us adding a night shift.

    Solutions

    Related software solutions

    • Custom SaaS Platform

      A production-ready SaaS foundation — multi-tenancy, authentication, billing, admin and APIs — that we customise into your own software product, so you launch sooner.

    • Customer Management Software

      Customer management software that unifies customer profiles, service history, support tickets, loyalty and communication so every team sees the full customer picture.

    • School Management System

      An all-in-one school management system for admissions, attendance, timetables, fees, exams and parent communication, configured for single schools and multi-campus groups.

    FAQ

    Frequently asked questions

    • How much does custom web application development cost?

      It depends mainly on the number of user roles, workflows, integrations and reports. A focused internal tool often sits in the low tens of thousands, while a multi-tenant customer platform costs considerably more. We always provide a range after a short discovery phase, and our cost guide explains the drivers.

    • How long does it take to build a web application?

      A minimum viable version of an internal tool typically takes 8–12 weeks. Larger platforms with many integrations take 4–9 months, usually released in phases so you get value early.

    • Which technologies do you use for web applications?

      Mostly ASP.NET Core and C# on the back end, with React, Angular or Next.js on the front end and SQL Server or PostgreSQL for data. We host on Azure or AWS depending on your existing setup.

    • Will we own the source code?

      Yes. The code, infrastructure and documentation belong to you and live in your own repositories and cloud accounts from day one.

    Insights

    Further reading

    Have a web app in mind?

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    Start a Project

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