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Niqcode

System Integration

Most integration work is not writing the happy path. It is deciding what happens the first time the other side returns something you were not told about.

Connecting what you already run: payment gateways, WhatsApp and messaging, OTP and identity, government and customs APIs, ERP and third-party services.

What we do

System Integration

Payment gateways, WhatsApp and messaging providers, OTP and identity services, government and customs APIs, ERP systems and third-party services: we connect what you already run against its real documented contract, and against what it actually returns in production.

Retries, idempotency, timeouts and reconciliation are designed up front, because a payment or a customs submission that is sent twice is a business problem, not a bug report. Every call is logged in a form your team can search when someone asks what happened to one transaction.

Where a provider's sandbox does not match production, we say so in writing and agree how it will be verified before go-live rather than discovering it after.

System Integration

What you get

  • A written integration contract per provider: fields, error cases and retry rules

  • Idempotent request handling so a repeat never becomes a duplicate transaction

  • Searchable request and response logs, with sensitive fields masked

  • Reconciliation reports for anything involving money or regulatory submission

  • Sandbox and production verification steps agreed before go-live

Our Expertise

Typical stack

  • Go: high-throughput services and integrations
  • Node.js: APIs, jobs and integration workers
  • .NET: enterprise backend services
  • Docker: containerised builds and deployments
  • Kubernetes: orchestration for multi-service systems

How we work

How a project starts, and how it is priced

  1. Tell Us The Problem

    Reach us by email or WhatsApp and describe what is broken or what you want built. We reply with our reading of the problem and the options.

  2. Get Scope And Price

    You receive a written scope, a timeline and a fixed price, including what is explicitly not included. No surprise line items later.

  3. We Build And Hand Over

    We deliver on the agreed timeline, with documentation and a working deployment. You can keep us on for support, or take it in-house.

How pricing works

The price follows the scope. Once we understand the problem, you receive a written quotation that states what is included, what is explicitly not included, the timeline and the price.

If something outside that scope turns up during the work, we write it down and tell you before anything changes. Extra work is quoted separately and only starts once you agree to it.

You can also stop after the quotation. Reading our scope does not commit you to building with us.

FAQ

Questions buyers ask us

How is an integration project priced?

Per provider and per flow: how many systems are connected, which error cases they return, and whether money or a regulatory submission is involved, because those need reconciliation. You receive the scope in writing with a fixed price before work starts.

How long does an integration take?

The timeline is written into the quotation. The provider's side often decides it: access to a sandbox, the gap between sandbox and production, and how quickly their team answers. Where we depend on them, the quotation says so.

Who owns the integration code?

Ownership of the source code is agreed in the quotation before work starts, and so is which accounts and keys are held by you. At handover you get the written integration contract per provider, the logs and documentation, and a working deployment.

What happens when a provider changes their API?

It will happen. Under managed service we monitor the integrations, handle incidents and make the change within the monthly change budget when it is small, or quote it separately when it is not. Without managed service, the integration contract and the logs tell your team where to start.

Which systems can you connect?

Payment gateways, WhatsApp and messaging providers, OTP and identity services, government and customs APIs, ERP systems and other third-party services. We build against the documented contract and against what the provider actually returns in production.

Start with one conversation

Describe the problem and you get our reading of it, a scope and a price. If we are not the right fit, we will say so.