API Integration API integration developers in London, United Kingdom
UK teams often run Shopify or a custom site, Xero or QuickBooks, a CRM, a payment provider and a courier, glued together with a no-code tool that has started to creak. We replace the fragile parts with connectors that are logged, monitored and documented.
For London and UK e-commerce brands, service firms and operations teams, including UK businesses selling into Saudi Arabia and the Gulf.
CREATVZ is an API integration company for UK businesses, with a studio in London. We connect Shopify or your own site, Xero or QuickBooks, your CRM, payment provider and courier, replacing fragile no-code links with connectors that are logged, monitored and documented. Send a list of your tools through the project form or WhatsApp.
The automation that fails quietly.
No-code automation tools are a good start. The trouble comes later: a step fails without anyone noticing, a task limit is hit at month end, or the one person who built the flows leaves. Orders go missing, invoices duplicate, and nobody can explain why.
We audit what you have, keep what is working, and rebuild the critical flows as proper connectors with retry, logging and alerts. Each decision, such as which system owns the customer record, is written down so your team understands the setup without us.
What UK teams connect with us
- Shopify to Xero or QuickBooks
- Website and forms to CRM
- Orders to courier and tracking
- Stripe or PayPal to invoicing
- UK systems to Gulf partners
What you get
You get an audit of your stack, a written plan per connection, tested connectors, alerts when something fails, and documentation and keys in your own accounts.
Systems Audit
A map of the tools you use today, what data moves between them by hand, and which of them offer an API we can work with.
Integration Plan
A written plan for each connection: what triggers it, which fields move, which system is the source of truth and what happens when something fails.
Connector Build
The connectors built and tested against your real accounts, using each provider’s official API where one exists.
Data Mapping & Sync
Field mapping for customers, orders, products, invoices or stock, with an agreed rule for duplicates, missing values and Arabic and English names.
Error Alerts & Logs
Alerts when a sync fails and a log your team can read, so a missed order is noticed in minutes rather than at month end.
Documentation & Support
Plain documentation of every connection and the keys it uses, held in your accounts, plus a support plan for when a provider changes its API.
API integration developers in the UK
No-code automations are a good start. The trouble comes when one fails quietly and nobody notices.
No-code automation tools are a good way to start. The trouble comes later: a step fails without anyone noticing, a task limit is hit at month end, or the one person who built the flows leaves. Orders go missing, invoices duplicate and nobody can explain why. We audit what you run today, keep what works, and rebuild the fragile parts as integrations with clear error handling and alerts.
We take briefs from London and across the UK, working remotely from our London studio in UK hours. E-commerce brands, service firms and operations teams use us for Shopify to Xero or QuickBooks, website forms to HubSpot or another CRM, orders to couriers with tracking, and Stripe or PayPal payments to invoicing. We work with your in-house developers where you have them, and document the work so another developer can pick it up.
Some UK businesses also sell into Saudi Arabia, Bahrain or the Gulf, and need their systems to talk to a partner or marketplace there. Our teams in Riyadh and Manama help with the Arabic text and with the practical details of the Gulf tools. Keys and ownership stay with you, and we explain what happens when a connection fails. Send us a list of your systems and the tasks your team repeats, and we will say what we would audit first.
How UK businesses use API integration
Automations that fail quietly
A no-code flow stopped weeks ago and orders were not passed on. We rebuild the flow with failure alerts and a record of what ran.
Shopify and accounting out of step
Finance fixes sales entries by hand each month. An integration passes orders, refunds and fees across consistently.
A UK shop selling to a Gulf partner
Orders from a Gulf partner arrive by email. We connect the partner’s feed to your order system, with Arabic names handled correctly.
Staff re-typing orders from one system into another?
List the systems and what moves between them. We reply with questions and a scoped quote.
How it works
Step 1: Audit
We list your systems, watch where staff re-type data, and check what each system’s API allows.
Step 2: Plan
Each connection written down: trigger, fields, source of truth, error handling. You approve before we build.
Step 3: Build
Connectors built and tested on a copy or test account first, then switched on with real data under watch.
Step 4: Hand over
Documentation, access keys in your name, alerts set up, and a support plan for provider changes.
Development work
See all work
High Star Est. website and brand
Website, branding, logo and company profile for High Star Est., an operation and maintenance contractor in Yanbu, Saudi Arabia.
Mobius bilingual brand and website
Bilingual Arabic and English logo, brand identity, company profile and website for Mobius Technology Company Limited, an industrial services company in Saudi Arabia.
Alwa Ali Mubarak Est. website
Website, domain and hosting setup, and company profile for a general contracting and trading establishment in Saudi Arabia.
Orbit Conveyancing website
Website, branding and Google Business Profile setup for Orbit Conveyancing, a property conveyancing firm in Melbourne, Australia.
Project or retainer?
Questions
How much does API integration cost in the UK?
It depends on scope: the number of systems and data types, sync frequency and each provider’s API. We audit first and quote each connection as a fixed scope, with changes priced before work starts.
How long does it take?
A single connection between two well-documented platforms is much quicker than a chain. The proposal lists each connection with its own date.
Should we keep our no-code automations?
Often some of them, yes. We keep the simple flows that work and rebuild the high-volume or business-critical ones where failures cost you money.
Can you work with Shopify, Xero and HubSpot?
Those platforms publish APIs, and we build against them using your own accounts. We confirm the specific endpoints and limits for your case in the audit.
How do you handle failures and retries?
Failed items are retried where it is safe, logged where it is not, and alerts go to the person you name. Nothing is meant to fail silently.
What about GDPR?
We pass only the fields each connection needs, keep keys out of the code and avoid storing personal data unnecessarily. Your legal obligations should be confirmed with your adviser.
Who owns the code and the keys?
You do. Code, hosting and API keys sit in your accounts, documented in plain English.
Can you connect our systems to a Gulf partner or marketplace?
If their system offers an API or a supported data exchange, yes, including Arabic product data. We check it with their team during the audit.
Can you work with our in-house developers?
Yes. We can take the integration layer, follow your conventions and review process, and hand over cleanly.
What support follows?
A written support plan for provider API changes and new connections, without lock-in.
Can you take over flows built in a no-code tool?
Yes. We review them, keep what is sound and rebuild the parts that are fragile or hard to maintain.
Can you work to our change process?
Yes. We follow your release and approval steps and document each change.
Can you connect our accounting package and our CRM together?
Yes, where both offer a way to connect. We map which records move and in which direction before building.
Do you build webhooks and custom endpoints?
Yes, where the integration needs them. We document them and agree who maintains them.
Can your Gulf team help with Arabic data?
Yes. Our teams in Riyadh and Manama check Arabic names, addresses and text as they move between systems.
Can we start with an audit only?
Yes. An audit with a written list of risks and fixes can be scoped as a first step.
Tell us which systems need to talk.
A short list is enough to start: the systems you use, the data you move by hand and how often. We reply with questions and a fixed-scope quote.
More specialist services
Each one stands alone, and they work together on a single brief.
- DevelopmentAll Development services
- E-commerce Store DesignSalla, Zid, Shopify, WooCommerce / Arabic + English / Launch-ready
- Web Application DevelopmentPortals + dashboards / Arabic RTL / Your code
- Real Estate Portals & AppsListings + search / Arabic RTL / Your code
- Website Speed OptimizationCore Web Vitals / Mobile first / Before + after
- Mobile App DevelopmentiOS + Android / Arabic RTL / Store submission
Cities we work in
Got a brief?
Tell us what you are making and when it has to ship. We will take it from there.