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Business systems & SaaS

Custom web application development

We build browser-based software for the work your business does every day: managing customers, processing invoices, tracking stock and running services online.

Replace a spreadsheet process, connect existing systems or develop a new SaaS product. We work directly with businesses and as a development partner for agencies.

Example workflow · order management

One order, from enquiry to invoice

  1. 01Capture the customer and their requirements
  2. 02Check stock and prepare a quote
  3. 03Approve the order and assign the work
  4. 04Issue the invoice and track payment

A connected workflow with shared records, permissions and a clear history of changes.

What we build

Web applications for business operations

Our work covers internal tools, customer portals and subscription products. The features below are examples of what we can scope around your process.

01

Excel-to-web applications

Turn spreadsheets used for approvals, calculations or reporting into a shared application. Keep the business rules, with controlled access and consistent data.

02

Custom CRM systems

Manage enquiries, customer records, follow-ups and sales activity in one place. Shape the pipeline around how your team actually sells and supports customers.

03

Invoicing & accounting systems

Create quotes and invoices, record payments and give staff a clear view of outstanding balances. Agree accounting rules and integrations with your finance team.

04

Finance & investment portals

Give customers or internal teams access to portfolio information, documents and reports. Define data sources, access controls and review steps before development.

05

SaaS product development

Build a subscription service with customer accounts, administration and billing integrations. Start with the core paid workflow, then extend it using customer feedback.

06

Inventory management

Track products, stock movements, purchasing and fulfilment. Connect stock records to orders and reports so staff can work from the same information.

Excel to web

Keep the knowledge in your spreadsheets. Make the process easier to run.

The spreadsheet usually contains years of practical decisions. We review its formulas, exceptions and hand-offs before replacing it.

The first release can cover one process while the rest of the business continues working as usual. Data migration and a check against your existing calculations belong in the scope from the start.

Understand the workbook

Identify the inputs, calculations, reports and people responsible for each step.

Design the shared workflow

Agree who can view, edit and approve records, including the exceptions staff handle manually today.

Check the results before switching

Import sample records, compare outputs and test the workflow with the people who will use it.

Our web development technology stack

We select a stack for the application, your existing systems and the team maintaining it. A project does not need every technology on this list.

React & Angular
User interfaces

Interactive screens, forms, dashboards and administration tools.

Node.js & FastAPI
Backends and APIs

Business rules, authentication, integrations and the services behind your application.

MySQL & PostgreSQL
Application data

Structured records, relationships, transactions and reporting.

Rust
Specialist components

Components where performance or systems integration makes Rust a practical choice.

Development, integration and ongoing support

A working application needs more than screens. We agree the scope for APIs, permissions, migration, testing, deployment and backups, then define what support covers after launch. Agencies can bring us in for an agreed part of delivery or the full application build.

Explore agency partnerships →

Web application development questions

Should we build a custom application or use existing software?

If an existing product meets your requirements without awkward workarounds, it may be the better choice. Custom development makes sense when your workflow, integrations or product idea needs behaviour that available tools cannot reasonably provide.

Can you move our Excel process to a web application?

Yes. We start by reviewing the workbooks, formulas, data and users. We then agree the first workflow to replace, how records will be migrated and how the results will be checked.

Can the application connect to our current systems?

We review the available APIs, data formats and access permissions before confirming an integration. This can include accounting software, payment providers, existing databases and other business tools.

How do you estimate the cost and delivery time?

We need to understand the main workflows, user roles, integrations and existing data. We use that information to define a first release and provide an estimate with the assumptions and exclusions clearly stated.

Show us the process you want to improve

Describe the workflow, who uses it and where it gets difficult. A sample workbook with sensitive information removed can help explain the job.