Skip to content

Software Engineering

API Development & Integration Services

What is API Integration?

An API is how one system talks to another. Integration is the work of connecting your systems — CRM, ERP, payments, shipping, your own apps — so data moves between them automatically instead of being exported, emailed and typed in again.

Good integration is invisible: an order placed on the website appears in the warehouse, the invoice in accounting and the customer record in the CRM, correctly and within seconds. When something fails, someone knows before a customer does.

Contact How it works
Data entered onceSystems in syncFailures caught early

How it works

How Data Moves Between Your Systems

Every integration follows the same reliable path, with checks at each step.

  1. Event

    Something happens — an order, a payment, a new customer.

  2. Transform

    The data is mapped to the format the next system expects.

  3. Validate

    It is checked and authenticated before anything is written.

  4. Deliver

    It reaches the target system, retried if it is briefly down.

  5. Monitor

    Every call is logged, and failures raise an alert.

What we provide

API & Integration Services We Provide

New APIs, connections between existing systems, and the monitoring that keeps them healthy.

  • API Design & Development

    Secure, documented APIs for your apps, partners and customers.

    • REST and GraphQL
    • OpenAPI documentation
    • Auth, rate limits and versioning

  • Business System Integration

    Your CRM, ERP, accounting and ecommerce systems sharing one set of data.

    • Salesforce, HubSpot, Zoho
    • SAP, Odoo, Tally
    • Shopify and marketplaces

  • Payment & Third-Party APIs

    Payments, shipping, messaging and maps built into your product.

    • Stripe and Razorpay
    • Shipping and logistics
    • WhatsApp, SMS and email

  • Integration Monitoring

    Logs, retries and alerts so failed syncs are fixed before anyone notices.

    • Retry and dead-letter queues
    • Dashboards and alerts
    • Audit logs

Under the hood

APIs Designed as Contracts

Every API starts as a written contract, so both sides build against the same promise.

  • Spec first

    The OpenAPI contract is agreed before code, and the docs are generated from it.

  • Secure by default

    Authentication, scopes and rate limits on every endpoint.

  • Versioned

    Changes never break existing clients without warning.

openapi: 3.1.0info:  title: "Orders API"  version: 2.4.0paths:  /orders/{id}:    get:      summary: "Fetch one order"      security:        - oauth2: [orders:read]      responses:        200:          description: "The order"        404:          description: "No order with that id"      x-rate-limit: 600
Contract validapi · v2.4

Use cases

Integrations That Pay Back Fastest

Start where the same data is typed in twice — that is where the hours and the errors are.

  1. Order to cash

    Website orders flow to inventory, shipping and accounting automatically.

  2. Lead to customer

    Forms, ads and chats feed the CRM with every lead, scored and assigned.

  3. Partner connections

    Give partners and resellers a secure API instead of spreadsheets.

  4. One customer view

    Support, sales and billing all see the same customer data.

Technologies We Use

  • REST
  • GraphQL
  • Webhooks
  • gRPC
  • Laravel
  • Go
  • Python
  • RabbitMQ
  • Kafka
  • Redis
  • AWS
  • Azure
  • API StylesREST, GraphQL, Webhooks, gRPC
  • BackendLaravel, Go, Python
  • MessagingRabbitMQ, Kafka, Redis
  • CloudAWS, Azure

Open standards and proven tools, so integrations stay reliable and easy to extend.

Contact

Our process

Our API & Integration Process

Map the data, agree the contract, then connect one flow at a time with monitoring from the start.

  1. Discovery

    We map your systems, their APIs and where data is re-keyed today.

    • System map
    • Data flows

  2. Contract

    We agree the data model and API contract with every side.

    • API spec
    • Field mapping

  3. Build & Connect

    We build the integration with retries, logging and tests.

    • Live integration
    • Test suite

  4. Monitor

    We watch every sync and fix failures before they reach users.

    • Dashboards
    • Alerts

Start here

Not sure which systems to connect first?

List the tools you use and where data gets typed in twice. We will show you the integration with the quickest payback.

Contact Explore use cases

Why Proponent

Integrations You Can Rely On

An integration is only as good as its worst day. We build for the failures, not just the happy path.

Countries Served
70+
Projects Completed
600+
Hours Support
24x7
Office Locations
5

  • Retries built in

    Temporary failures are retried automatically, nothing lost.

  • Monitored end to end

    Dashboards and alerts on every flow.

  • Secure connections

    Authentication, encryption and least-privilege access.

  • Documented

    Every API and mapping written down, never tribal knowledge.

  • Works with what you have

    We connect the systems you already run.

  • Stop typing the same data twice.

    Tell us which systems you use. We will map the integrations that would save your team the most time.

Start a project

Tell us what you are building

A few lines is enough to start. Tell us the problem, not the solution, and we will come back with the questions that shape the plan.

What happens next

  1. We read it properly

    Someone who would work on the project reads your note and comes back with questions, not a sales script.

  2. We scope it together

    One call to agree the problem, the constraints and what finished looks like — before anyone talks about price.

  3. You get a proposal

    Scope, sequence, timeline and cost, in writing, with the risks we would plan for named up front.

To learn more about how we protect your data, please refer to the Proponent privacy policy.

Next step

Your Partner For What Comes Next. Let's Start The Conversation.

Starting is the easy part. Tell us where you are and what you are trying to reach, and we will map the route — the scope, the sequence, and the risks worth planning for now rather than later. From that first conversation through build, launch and everything after, the same team stays with it.

Contact