Web app development services for products and platforms people use every day
Customer portals, SaaS platforms, commerce and internal systems built in React and Node.js, designed for the load you will have and tested with the people who will use them.
- React
- Angular
- TypeScript
- Node.js
- Python
- PostgreSQL
- MongoDB
- AWS
- Users, roles and workflows
- ERP and CRM data
- Performance budget
- 01 Prototypeflows tested with users twice
- 02 API layerdocumented for web, mobile, partners
- 03 Buildtests and performance checks per build
- 04 Launchmonitoring and rehearsed rollback
- Production web app
- Role-based access
- Workflow analytics
What you get
7 deliverables, all yours to keep
- Tested prototype and design system in code
- Production app with role-based access and audit trail
- Documented API layer
- Performance budget and accessibility checks in pipeline
- Automated tests, pipeline, monitoring and rollback
- Analytics for the workflows that matter
- Source code and infrastructure in your accounts
Sound familiar?
Who buys web app development services from us
The buyers who need web app development services from us are rarely starting from nothing: something already exists and has stopped working for them. It might be a SaaS product that slows down when a large customer signs, a partner network logging into three portals, or an ERP that customers now need to reach through a portal.
We build SaaS platforms, commerce, portals and data applications in React and Node.js, with performance, permissions and the API decided before the first sprint. For a global fashion retailer, generic merchandising was replaced with personalized product discovery. When comparing firms, ask who owns the repositories, what happens when an integration arrives late, and how you will know the app is slow before your customers do. More on the wider approach is on our product engineering page.
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A SaaS product that slows down whenever a large customer signs
It was built quickly, and now the moment the business grows is the moment the product gets slower.
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Commission rules no hosted storefront can express
Selling through distributors, affiliates and a direct store leaves the rules that matter outside the platform.
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An employee process run through forms, email and a shared inbox
Requests move through a shared inbox rather than a system, so the process depends on whoever reads it.
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Partners logging into three portals to do one job
A partner or dealer network spends its time switching between systems instead of doing the work.
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A customer portal needed on top of an ERP or CRM
The system of record was never designed for external users, so customers cannot reach it directly.
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Mobile apps planned for later on an unprepared backend
Without a backend designed for it, adding mobile apps means rebuilding it rather than adding a front end.
The work
Inside a Web Application Development engagement.
What a web application development company should build for you
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SaaS platform development
Multi-tenant products with accounts, roles, subscription state and usage analytics. Tenant isolation is decided in design, since changing it later means migrating live customer data.
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Commerce and customer-facing platforms
Catalogs, personalized discovery, loyalty and affiliate structures. Platforms of this type lift conversion by up to 26%.
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Partner and employee portals
Self-service systems where the rules live in the software, such as travel approvals with the policy checks inside the workflow.
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Operational dashboards and data applications
Screens on a data layer with one definition per metric, so the number in the portal matches the number in the board pack.
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React development, or Angular where it is standard
React with TypeScript and a Node.js backend for most front ends, Angular where your organization already uses it, and Python when the app needs data science or document processing.
How we approach web application development
- 01
Performance is a budget, not a hope
Limits on page weight, JavaScript and response time are set at the start and checked on every build, because users on a mid-range phone over a hotel connection are the ones who matter.
- 02
Permissions get designed, not bolted on
Business web apps end up with more roles than anyone expected: regional managers, partners, auditors, support staff. We model roles and data scope early.
- 03
API first, screens second
The web app talks to a documented API, which keeps the front end replaceable and lets mobile apps, partners and reporting tools use the same backend.
- 04
Rendering follows the audience
Public pages that need to rank are server-rendered or static. Signed-in screens can be a client-side application, where search engines never look.
- 05
Accessibility is part of done
Keyboard navigation, contrast and screen reader labels are checked in the pipeline. For UK and EU public-facing and employee systems, that is increasingly a procurement requirement.
Where web app projects go wrong
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The demo that falls over when 500 people use it at once
We test with realistic volumes before launch, not in a walkthrough.
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A front end nobody can maintain after two years
A component library is built in the first weeks and the product is held to it, so three state management libraries and five button styles never appear.
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Integration left until the end
Each ERP or CRM integration is proven early with a thin slice. Where another team's API is late, release one gets a file import instead.
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Errors that surface through customer complaints
Monitoring, error reporting and a rehearsed rollback go live with the first release, and analytics cover the workflows the product exists to support.
How it runs
From first call to production.
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Discovery
Users, workflows, roles and constraints, ending in a signed statement of what the first release does.
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Prototype and test
Clickable flows tested with real users at least twice, then turned into a component library the engineers build from.
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Architecture
Rendering approach, tenancy, permissions, API design and caching decided against the tested design, and written down.
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Build
One-week cycles with a demo every week. Every build runs tests, security scans and performance checks.
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Launch and operate
Production release with monitoring and a rehearsed rollback, followed by handover or a pod that runs the next releases.
Team and timeline
5–8 weeks
for a scoped first release
Indicative. Actual duration depends on requirements and complexity, and can change.
Who works on it
- Product consultant
- UI/UX designer
- Two to four full stack developers
- QA engineer
- Data specialist when needed
Engagement model
Fixed Cost for a scoped first release of around 5–8 weeks. Dedicated Team or Time and Materials for platforms that grow release by release.
Good to know
Fixed Cost fits a scoped first release. Dedicated Team or Time and Materials fits platforms that keep shipping; a large multi-module commerce, loyalty or travel program typically plans for 6–10 months. You see working software every week.
Proof
Where we have built this.
How a global fashion retailer increased customer engagement by 34%
increased customer engagement
How an FMCG brand increased market share by 37% through digital commerce
increase in market share
How a large global financial services company reduced travel processing time by 38%
faster travel processing
FAQ
Web Application Development: common questions.
What is included in web app development services?
Everything needed to run the application in production, not only the screens. That covers discovery, a tested prototype, the front end, APIs, database, authentication and permissions, automated tests, a deployment pipeline, monitoring and handover documentation. Hosting setup is included too, in your own cloud account. What varies between projects is integration work with your existing systems.
What is the difference between a website and a web application?
A website mainly publishes information. A web application lets signed-in users do work: place orders, approve requests, manage partners, analyze data. That difference drives everything underneath it, including permissions, data integrity, audit trails and performance under concurrent use. A marketing site can be static. A web application needs a backend designed around the workflows it supports.
Why do you use React for web application development?
React has a deep hiring pool, a mature ecosystem and strong support for component libraries, which makes a product easier to maintain after handover. We also use Angular where an organization already standardizes on it. The choice matters less than consistency: one front-end approach, one component library and one way of fetching data across the product.
Can the same backend serve our web app and a mobile app later?
Yes, if the API is designed for it from the start. We build the web application against a documented API rather than coupling screens to the database, so a mobile app, a partner integration or a reporting tool can use the same endpoints later. Adding mobile then becomes a front-end project rather than a rebuild.
How long does it take to build a web application?
A focused first production release typically takes 5–8 weeks, including discovery, design and build against a tested prototype. Where the release depends on an ERP or CRM integration, early access to a test environment keeps it at the shorter end. Our commerce and travel platform engagements ran between 15 and 18 months as a series of releases; a comparable multi-module program today typically plans for 6–10 months.
Related services
- Custom Software DevelopmentEnterprise platforms, workflow systems and software products built around how your organization works, with the architecture decided for the load you will have.
- MVP DevelopmentA 4–6 week cycle from discovery to a deployed product with real users. Scope moves, the date holds, and you own the code from day one.
- Mobile App DevelopmentiOS and Android apps for customers, patients, partners and field teams, in Flutter, React Native or native code, built on a backend designed to serve web and mobile.
