API integrationBuilt around your workflow.

Connecting two endpoints is only the beginning of an integration. We define what each system owns, how changes travel and what happens when a dependency is unavailable, so failures can be detected and recovered deliberately.

Discuss your project requirements

From your workflow to a working system

  1. 1Source system
  2. 2API contract & processing
  3. 3Destination records

The right scope.
Built around your needs.

Start with the problem that matters. Combine the capabilities your project needs, with boundaries agreed before the build.

Contract and mapping

Review endpoint capabilities, authentication and provider limits alongside the business workflow. Define field mappings, identifiers and validation rules, documenting incompatible records and assumptions so the integration does not silently discard information or invent missing values.

Reliable data exchange

Choose synchronous calls, scheduled jobs or event delivery according to the task. Plan timeouts, retries, deduplication and rate-limit handling, with explicit behavior for partial completion and a durable record of changes that still need to be processed.

Operational visibility

Expose useful integration status, correlation identifiers and failure details without revealing credentials or unnecessary personal data. Define reconciliation checks and authorized replay procedures so operators can investigate a broken handoff and restore consistency between the connected systems.

Connected systems. Clear ownership.

A reference integration flow. Mapping data is only part of the work; failures and conflicting updates need a deliberate resolution path.

REFERENCE ARCHITECTUREChoose a layer to inspect its role.

Source: its responsibility

Read approved records from the system that owns each entity and field.

What to review

Confirm API access, identifiers, rate limits, change events and source-of-truth rules.

Illustrative planning model. Your architecture and deliverables are agreed during scoping.

Decisions before the build.

Review the scope and planning questions before agreeing the work.
The planning question

Which direction should data move, and how quickly?

The approach

Review endpoint capabilities, authentication and provider limits alongside the business workflow. Define field mappings, identifiers and validation rules, documenting incompatible records and assumptions so the integration does not silently discard information or invent missing values.

The service scope

API integrations between business systems with documented contracts, authentication, retries and data reconciliation.

Start where
your project is.

The first step depends on what is already known. These starting points help define an engagement; scope, price and timing are agreed separately.

Explore an uncertain idea

The problem is clear, but the approach is not.

  1. 1Question
  2. 2Prototype
  3. 3Decision

What you take forward

A bounded experiment, findings and a recommendation on what to validate next.

A prototype is not a production-ready service.

Deliver a defined scope

You know the workflow and can agree acceptance checks.

  1. 1Scope
  2. 2Build & review
  3. 3Handover

What you take forward

Agreed deliverables, verification evidence and operating instructions for the scoped release.

Changes to scope need an explicit decision on cost and timing.

Improve an existing system

A live system needs focused changes or ongoing care.

  1. 1Review
  2. 2Prioritize
  3. 3Release & observe

What you take forward

A prioritized backlog, reviewed changes and an agreed maintenance or support boundary.

Coverage, response targets and access are agreed per engagement.

How project pricing works

A clear path.
Through the work.

Scope and deliverables are agreed for each project. These stages guide the conversation.
  1. 1

    Source system

    Which direction should data move, and how quickly?

  2. 2

    API contract & processing

    How will records be matched across systems?

  3. 3

    Destination records

    Who owns failed-event recovery and provider changes?

Connect through explicit contracts

Technology is a scoping decision. These are relevant tools and building blocks to discuss against your existing systems, operating constraints and maintenance needs.

Interfaces

APIsWebhooksFile exchange

Choose an interface after reviewing the systems’ supported contracts, rate limits and access methods.

Processing

Node.jsTypeScriptValidation

Define entity identifiers, mappings and validation rules that preserve source-of-truth ownership.

Operations

QueuesRetry rulesReconciliation

Choose delivery and exception-handling patterns based on update timing and the consequences of partial failure.

Meet the founder and review the engineering background

The ecosystem.
Behind the experience.

Interfaces, application logic, data and operations. The building blocks work together around your project.

Frontend Development

  • React
  • Angular
  • JavaScript
  • HTML5
  • CSS3

Backend Development

  • Node.js
  • Express.js
  • Laravel
  • PHP

Database

  • MySQL
  • PostgreSQL
  • MongoDB
  • Firebase

Cloud & DevOps

  • Azure
  • AWS
  • Google Cloud
  • Docker
  • Jenkins

What should be checked
before handover.

Turn quality expectations into reviewable evidence. The exact checks and responsibilities belong in the project scope.

  1. Correct mapping

    Compare representative records and edge cases, including units, missing fields and changed identifiers.

  2. Safe recovery

    Test duplicate events, partial writes and unavailable destinations against agreed retry behavior.

  3. Visible exceptions

    Verify that failed or inconsistent records can be traced, assigned and reconciled by operations teams.

Before
we begin.

Practical answers to help turn your idea into a scope everyone understands.

What does api integration include?

API integrations between business systems with documented contracts, authentication, retries and data reconciliation. The scope can include contract and mapping, reliable data exchange, operational visibility. Deliverables depend on the agreed workflow and existing systems.

Who is api integration for?

Teams connecting products, internal applications or third-party business platforms.

What should we prepare before starting?

Bring the workflow, user roles, existing systems and anonymized examples. Which direction should data move, and how quickly? Start with a local project brief and share it when you are ready.

How are scope, timing and price agreed?

The estimate depends on the workflows, integrations, data, review requirements and operating responsibilities. These are agreed for the individual project. A planning brief does not book work or establish a delivery commitment.

Open code. Lasting value.

Built to be understood,
adapted and improved.

Our own products are intended to be open source. We also provide custom development, managed hosting and servers, support and training. Custom software we build for clients stays private unless they explicitly agree to an open-source release.

Repositories and licences for JUHENZA products will be shared as releases take shape. No specific licence has been selected yet.

Often better together.

All services

Still have questions?
Start with the brief.

Bring the problem you want solved. We’ll shape it into a project brief you can keep — or let AI draft a first approach.