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Systems, software and AI

APIs and integrations that keep business data moving

Need payments, CRM, booking or back-office systems to exchange data reliably? I define ownership, authentication and failure handling before connecting them.

Sami Swain, founder of Web Spinner UK, with his son Teddy
20+ years trading 500+ builds delivered Direct senior developer contact
20+ Years
Building UK businesses
Staged Delivery
Visible, testable milestones
Direct Access
Work directly with Sami
Trustpilot ★★★★★ Rated 5 out of 5 Google ★★★★★ Rated 4.9 out of 5
Workflow firstScope the real operation
Secure foundationsRoles and access considered
Supportable buildTesting and handover included
Get A Proper Quote See Pricing
New project slots scoped weekly From £1,250 API and integration work
Call Sam: 07903 505 874 WhatsApp Sam
Need systems to connect? API integrations from £1,250 Authentication, data flow and failure handling scoped before build Message Sam
API and integration development · Family-run · UK-wide Hi, I'm Sam — your integration developer
Talk directly with Sam

Need systems or APIs to connect properly?

API and integration work starts from £1,250. Tell me which systems hold the data, what must move between them and what currently fails or gets repeated.

By sending this enquiry, you agree to Web Spinner UK contacting you about your request. Do not send passwords or access keys here. See our Privacy Policy.

Authentication, data ownership and failure handling are scoped before development begins.

Systems, software and AI

What’s included with Custom Software & API Development

This Custom Software & API Development service starts with the people, workflow and data involved, then turns the requirement into a maintainable system with clear permissions, integrations and measurable next steps.

See pricing and options
Relevant to this page Custom Software & API Development

Six parts of the scope are shown in the order they are considered, with the exact work confirmed before delivery begins.

01 / Scope

What the work covers

  1. Data-flow discovery

    Systems, owners, inputs and outputs mapped before implementation.

  2. API design

    Clear endpoints, validation, errors and versioning where appropriate.

  3. Platform integration

    Existing business services connected without unnecessary duplication.

  4. Security controls

    Authentication, permissions, rate limits and sensitive data handled deliberately.

  5. Automation

    Reliable background jobs and event-driven tasks reduce manual work.

  6. Monitoring

    Logging, failure visibility and maintainable operational support.

Read the full custom software & api development service detail
From cloud-based tools to complex API ecosystems and mobile backends — we deliver robust, maintainable software that drives efficiency and revenue. Specialising in high-value integrations for UK enterprises.
Choose a sensible starting point

Three routes, shaped around the job

Start with the route closest to the current problem. The exact scope is confirmed before meaningful build work begins.

Get a proper quote
02 / Starting route

Choose the closest fit

You do not need to diagnose the whole job before getting in touch. Pick the nearest route and the scope can be corrected before work starts.

Pilot

Prove one valuable workflow

Start with a bounded operational problem, clear users and a measurable result.

Scope a pilot
System

Build the working platform

Develop roles, data, screens and business rules in visible, testable stages.

Plan the system
Connect

Integrate and automate

Join the platform to the services, APIs and follow-up processes that make it useful.

Discuss integrations
Why not buy an off-the-shelf tool?

Use an existing product when it fits. Custom work is justified when the workflow, permissions, data or integrations create a genuine operational gap.

Can delivery be staged?

Yes. A useful core workflow can launch first, with integrations and advanced modules added through visible milestones.

What happens after launch?

Monitoring, maintenance, documentation and a prioritised improvement route are agreed around the system’s real operational importance.

Fit, problems and outcomes

Who this service helps and what it is built to improve

Useful coverage is grouped around buyer needs rather than exposed as an internal keyword list.

Who this helps

Trades & Construction Businesses Home Improvement & Renovation Specialists Professional Services & Legal Firms Aesthetic Clinics & Beauty Professionals Businesses Seeking Web Design & Digital Upgrade Local service businesses Growing SMEs Multi-location businesses

Outcomes to work towards

Consistent High-Quality Leads Increased Revenue & Bookings Dominant Local & Service Rankings Premium Professional Online Presence

Problems to fix

Low Website Traffic Not Ranking on Google Poor Lead Conversion Slow & Outdated Website Weak conversion flow Manual admin processes

Ways we can help

Custom API Development CRM Lead Routing
API and backend integration needs

This service supports custom API development, platform integrations, backend workflows and software layers that improve how information moves between business systems.

The priority is architecture, interoperability, security and reducing avoidable manual work rather than adding another disconnected interface.

Relevant project proof

Real interfaces and platforms relevant to Custom Software & API Development

The examples show the kinds of interfaces, accounts and operational journeys Web Spinner UK has delivered, with dedicated profiles for the underlying scope.

View all case studies
Holiday Friend Finder website screenshot built by Web Spinner UK
Holiday Marketplace

Holiday Friend Finder

A real app development project with a dedicated profile covering the build focus and delivered components.

  • Product and workflow planning
  • User journey structure
  • Custom application development
  • Scalable platform foundations
Read project profile →
Want to discuss a similar route? Send the essentials and Sam will suggest the most sensible next step.
Discuss my project
Pricing and options

Custom Software & API Development pricing and cost calculator

Choose a service and package in three quick steps. Your fixed package price appears at the end, without waiting for a callback or chasing a quote.

Your price is waiting at step 3 No enquiry form, no callback and no chasing just to see the package price.
1Choose a service
2Choose a package
3See your price
Step 1 of 3

What would you like us to build or improve?

Choose the closest service. You can review the matching packages next.

Next: choose a package, then see the fixed package price at step 3.
Step 2 of 3

Choose the package closest to your project

You will see the fixed package price immediately on the next step.

Selected package

Custom Software & API Development Starter

Bespoke software solutions, APIs, integrations and enterprise systems.

A focused Custom Software & API Development package for smaller scopes that need a clear, professional starting point.

Package detail What’s included 2 items
Custom Software & API Development Starter Delivery Focused planning, setup, implementation, and launch support for a starter Custom Software & API Development scope.
£1,250.00
Support & Maintenance (Year 1) First-year support, maintenance, monitoring, and minor adjustments.
£0.00
Step 3 of 3

Your fixed package price

No waiting for an email, no chasing a callback and no obligation.

Selected package

Custom Software & API Development Starter

Fixed first-year package price £1,250.00
One-off build / optimisation £1,250.00
Annual maintenance £0.00
The package price is clear before you contact us.

This price covers the listed package. Extra pages or bespoke functionality are priced clearly and agreed with you before work starts.

Use This Fixed Package Price
Price shown immediately No chasing a quote No obligation
Clear Process, Stronger Trust

What Working Together on Custom Software & API Development Usually Looks Like

If you are looking at Custom Software & API Development, the usual next step is a short brief, a proper scope, and a straight answer on budget, timing, and whether WordPress, custom code, or a mixed route makes the most sense.

01

Quick Brief

You explain the goal, what already exists, and where things feel stuck.

02

Scope & Route

The right route gets recommended properly, whether that means WordPress, custom-coded, an integration-heavy build, or a tighter first phase.

03

Build in Stages

Work is handled directly with clear review points, not bounced between account managers and mystery devs.

04

Launch & Handover

You get a live result, a clean next-step plan, and support options if the project needs ongoing care.

Typical Platform Timeline

Custom software, portals, dashboards, CRM systems, and heavier custom-coded work usually sit in the 3 to 12+ week range depending on workflows, users, permissions, and integrations.

  • • Discovery and scoping matter more here than they do on a brochure site.
  • • Larger builds are best split into clear phases rather than guessed in one hit.
  • • The more operational detail you can share early, the cleaner the delivery becomes.

Payment & Commercial Shape

Larger systems are usually split into staged milestone payments so the build stays visible and sensible.

  • • You get a proper scope before meaningful build work starts.
  • • Anything outside the agreed scope gets priced before it is added.
  • • Final handover happens once the closing balance is settled.
  • • Invoices are normally due within 7 days unless something else is agreed in writing.

Best Fit

  • • Businesses with a real workflow, portal, CRM, dashboard, or operational problem to solve.
  • • Teams that need user roles, permissions, integrations, or custom reporting.
  • • Owners who want software shaped around the business instead of the other way round.

Probably Not The Right Fit

  • • If the brief is still too vague to tell the difference between a dashboard, portal, CRM, or reporting layer.
  • • If the scope needs to be guessed rather than properly discussed.
  • • If the plan is to keep every bad existing process and just paint over it.

Why People Trust The Process

  • • Direct contact with the person doing the work, not an account-manager relay race.
  • • 20+ years in business and 500+ websites, apps, and software builds behind the scenes.
  • • Portals, dashboards, CRMs, custom-coded builds, APIs, and operational tooling are all normal territory here.
  • • Clear scopes, realistic timelines, and a proper next step instead of brochure fog.
Get A Proper Quote Read Terms
Useful questions

Custom Software & API Development FAQs

Do you build APIs and integrations for business systems?
Yes. API and integration work is designed to connect systems more cleanly, reduce duplication, and improve how data moves through the business.
Can you replace manual exports and re-entry between tools?
Yes. That is one of the most common reasons businesses invest in software and API development.
Do you work on secure authentication and permissions too?
Yes. Security, access control, and reliable data handling are core parts of custom API and integration work.
Is this only for large enterprises?
No. It is often valuable for any business where disconnected systems or manual processes are costing time, control, or commercial visibility.
UK service coverage

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England 65 locations
Scotland 4 locations
Wales 2 locations
Northern Ireland 1 locations
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