Services

Application & PWA Development

Installable, fast, accessible applications built as business systems — with authentication, data, dashboards and structure that hold up after launch.

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The problem

A brochure site cannot carry an operating business.

Once a business needs accounts, roles, submissions, dashboards, records and state, a conventional website stops being the right shape. Plugins get stacked on top of it until behaviour depends on a chain of extensions nobody controls.

The result is slow, fragile and progressively harder to change. Performance and accessibility become things you audit after the fact instead of properties of the build.

Who it is for

Businesses outgrowing a plugin-stacked website
Platforms needing authenticated user areas
Operations teams that live in dashboards
Products that must work well on mobile in the field

How I look at it

I choose the delivery model after I understand what the product actually has to do for the people using it.

Installability, offline behaviour, notifications and app-like navigation are not goals by themselves. They are answers to questions about context, frequency of use, and what happens when connectivity or attention is limited. A tool someone opens twice a day in the field has different demands than one used at a desk once a month.

The right delivery model should disappear into the experience instead of becoming the point of the product.

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John M Granskou, founder of JMG Group — John M Granskou, SEO, CROGrowth Systems Architect

What JMG Group does

The actual work involved.

Progressive web applications

Installable, offline-tolerant applications delivered over the web — no app store dependency, one codebase, immediate updates.

Business platforms and dashboards

Authenticated areas, role-aware navigation, records, filters, exports and the operational views a team actually works from daily.

Data-driven interfaces

Interfaces built on a real data model — server-rendered where it matters for search, client-driven where it matters for interaction.

Performance and accessibility engineering

Core Web Vitals, keyboard paths, focus states, contrast and semantics treated as build requirements, not a remediation pass.

AI-assisted development workflow

AI is used to accelerate implementation and review inside a defined architecture. The architecture is still designed deliberately.

Core capabilities

What is included.

Progressive web applications
Server-side rendering
Authentication and sessions
Roles and permission gates
Dashboards and admin surfaces
Forms, validation and submissions
Database and API integration
Core Web Vitals performance
WCAG-aligned accessibility
Maintainable component architecture

How it fits the wider system

Never delivered in isolation.

The application is where every other capability becomes visible. It has to be built so search, automation and growth work can attach to it without a rebuild.

Architecture: The data model and permission structure come from the platform design, not from the UI.
Search: Rendering, routing, metadata and structured data are part of the build, not a plugin.
Automation: Application events become triggers for workflows, notifications and integrations.
Analytics: Instrumentation is placed against defined conversion paths during the build.
Content: Editorial surfaces share the same components and data as the product surfaces.

Typical engagement

How the work runs.

01
Architect
Data model, routes, roles, rendering strategy and component structure.
02
Build
Implement in vertical slices — each one usable, reviewable and deployed.
03
Harden
Performance, accessibility, error states, edge cases and validation.
04
Validate
Test real flows on real devices, then measure against the defined criteria.
05
Improve
Iterate on evidence from usage rather than assumption.

Related work

Projects