API Integration in London
e10 Infotech provides API integration services in London connecting websites, CRM, ERP, accounting.
API integration so your systems stop needing a human to copy data
e10 Infotech Private Limited connects the tools your business already runs. The value is rarely in the connection itself. It is in removing the person who exports a file every morning, and in trusting one number because both systems agree on it. Businesses in London come to us when they want this handled properly.
What we connect
- Website and store to CRM, so enquiries and orders arrive instantly
- Accounting and ERP such as Tally, Zoho Books, QuickBooks or SAP
- Logistics and courier platforms for labels, tracking and serviceability
- Payment gateways, subscription billing and reconciliation feeds
- Communication tools: WhatsApp Business API, email, SMS and calling systems
- Marketplaces and internal legacy systems through files or custom endpoints
Built to fail safely
Integrations break, because the systems on either side change. We design for that: retries with backoff, idempotency so nothing is duplicated, dead letter queues for records that need attention, structured logs, alerting when a sync stalls, and a small dashboard so your team can see what is stuck without opening a ticket.
Works well with
Integration work sits inside Custom Software Development and Web Application Development. Payments are covered by Payment Gateway Integration, workflow removal by Business Automation, and sales data flow by CRM Development.
Working with businesses in London
Work for clients in London runs remote first: a named team, a scope agreed in writing before anything starts, and regular demos you can hold us to. Working hours are arranged to overlap your day, and everything is delivered in English.
Commercial context changes from one city to the next, so we start by looking at what comparable businesses in London already do, what they charge and where the gaps sit. That research shapes scope before production work begins.
You get one point of contact, senior people on the delivery, and reporting tied to enquiries and revenue rather than activity. Businesses in London and across the wider region are supported on the same terms.
Tired of moving data between systems by hand?
List your systems and we will map the integration and quote it.
Serving London and the wider region.
Queries raised before signature
Everything worth knowing about API Integration in London.
01What is an API integration?
It is code that lets two systems exchange data automatically, so a record created in one appears correctly in the other without manual entry.
02How long does an integration take?
A simple one way sync can take a few days. Two way syncs with reconciliation and edge cases usually take two to four weeks.
03What if a system has no API?
We use file based exchange, scheduled imports, database level integration or, as a last resort, controlled automation of the interface.
04Can you integrate Tally with our website?
Yes, commonly for customers, invoices, stock and payment status, using a middleware layer since Tally runs locally.
05How do you handle failures?
With retries, alerts, a queue of failed records and a log that shows exactly what was sent and what came back.
06Is our data secure during transfer?
Yes. Encrypted connections, scoped credentials stored in a secret manager, signed requests and no unnecessary data copied.
07Can you use WhatsApp Business API?
Yes, through an approved provider, with template management, opt in handling and delivery reporting.
08Do you document the integration?
Yes. Endpoints, field mappings, schedules, credentials location and failure handling are documented for your team.
09What about rate limits?
We respect them with throttling and batching, and design schedules so peak business hours are not disrupted.
10Can you build an API for our own system?
Yes, a documented REST API with authentication, versioning and rate limiting so partners can integrate with you.
11Who monitors it after launch?
We can, through a support plan with alerting, or hand over monitoring with runbooks to your team.
12How do we start?
List the systems, the data that must move and how often. We return a mapping document and a fixed quote.
13Do you offer API Integration in London?
Yes. e10 Infotech delivers API Integration for businesses in London and across the wider region, remote first with a named team and a scope agreed before work starts.
14How do you run API Integration projects for clients in London?
Working hours overlap the London business day, communication is in English, and you get one point of contact with reporting tied to enquiries and revenue rather than activity.
Talk to an engineer about API Integration in London.
Four lines is enough to start. You will hear back from someone who does the work, usually the same day, and nothing is sent to a sales desk.
Prefer to set it all out at once? The full brief form asks the longer questions. Or write to [email protected].