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API Integration

API Development & System Integration Services

Make your software talk to each other, reliably and securely.

Engineer reviewing API documentation and integration flows on dual monitors
API Development & System Integration
  • No more manual data entry

  • Real-time data flow

  • Fewer operational errors

Overview

Make your software talk to each other, reliably and securely.

Most businesses run a dozen or more software tools that were never designed to work together. The result is duplicate data entry, errors, delays and blind spots. SolVeda Digital's API development and system integration services connect those tools so data flows automatically and everyone works from the same information.

We design, build and document REST and GraphQL APIs, integrate third-party services such as payment gateways, shipping carriers, ERPs, accounting software and marketing platforms, and implement event-driven architectures with webhooks and message queues. For lighter integrations we configure automation platforms like n8n, Make and Zapier.

Every integration is built for the long term with authentication, rate limiting, retries, monitoring and clear documentation, so it keeps working long after launch and your developers can extend it with confidence.

What's included

Everything you need for api integration

Our api integration service covers strategy, design, build and support, so you work with one accountable team from start to finish.

  • REST and GraphQL API design and development

  • Third-party integrations: payments, logistics, ERP, accounting

  • Webhooks, event-driven architecture and message queues

  • Middleware and iPaaS setup (n8n, Make, Zapier)

  • API documentation, versioning and developer portals

  • Security, rate limiting and monitoring

Why it matters

Benefits of professional api integration

What your business gains when api integration is done properly by an experienced team.

  • No more manual data entry

    Orders, customers, invoices and inventory move between systems automatically.

  • Real-time synchronisation

    Webhooks and event streams keep every tool updated within seconds.

  • Fewer errors

    Validation, retries and reconciliation eliminate mistakes caused by copying data by hand.

  • Secure by default

    OAuth, API keys, encryption, rate limiting and audit logs protect every connection.

  • Well documented

    OpenAPI specs and developer portals make your APIs easy to use and extend.

  • Monitored 24/7

    Alerts and dashboards catch failures before they affect your business.

Our process

How we deliver api integration

A transparent, step-by-step approach that keeps you informed and in control from the first call to launch and beyond.

  1. 1

    Integration mapping

    We document systems, data flows, triggers and business rules to design the right architecture.

  2. 2

    API design

    Endpoints, schemas, authentication and error handling are specified with OpenAPI before coding.

  3. 3

    Development

    APIs, connectors, webhooks and middleware are built with automated tests.

  4. 4

    Testing and rollout

    End-to-end testing with real data, then phased rollout with monitoring.

  5. 5

    Support

    Ongoing monitoring, version management and updates as connected systems evolve.

Why SolVeda Digital

Why businesses choose us for api integration

  • 01

    Reliability engineered in

    Retries, idempotency, validation and monitoring keep integrations working long after launch.

  • 02

    Documented and maintainable

    OpenAPI specifications and clear code mean any developer can extend what we build.

  • 03

    Broad platform experience

    Payments, logistics, ERPs, CRMs, accounting and marketing platforms, plus systems with no API.

  • 04

    Security by default

    OAuth, encryption, rate limiting and audit logs on every endpoint and connection.

What you receive

Deliverables

  • Integration map and API specification
  • REST or GraphQL APIs with authentication and documentation
  • Connectors, webhooks and middleware for your systems
  • Automated tests, monitoring and alerting
  • Developer portal or handover documentation
  • Ongoing maintenance and version management

Use cases and industries

What we build and who we build it for

Typical api integration projects we deliver, and the industries where our team has hands-on experience.

  • Payment gateway and subscription billing integration
  • ERP, inventory and accounting synchronisation
  • Shipping carrier and logistics integrations
  • CRM and marketing platform connections
  • Public and partner APIs for your product
  • Legacy system integration and modernisation

Industries we serve

  • E-commerce and retail
  • Logistics
  • Finance
  • SaaS
  • Healthcare
  • Manufacturing

Do not see your industry? Our process adapts to any sector. Tell us about your business and we will share relevant experience.

Technology

Tools and platforms we use for api integration

We choose proven, well-supported technology so your solution stays fast, secure and easy to maintain for years.

  • Node.js
  • NestJS
  • FastAPI
  • GraphQL
  • Kafka
  • RabbitMQ
  • OpenAPI

Engagement models

Flexible ways to work together

Choose the model that fits your project and budget. Every option comes with transparent pricing, senior talent and a single point of contact.

Fixed-price project

Defined scope, predictable budget

A clearly scoped deliverable with a fixed budget and timeline. Ideal for websites, e-commerce stores, CRM implementations and defined automation projects.

  • Written scope and milestones
  • Fixed quote, no surprises
  • Post-launch support period

Dedicated team

Software products and long roadmaps

Senior engineers, a designer and a project manager embedded with your business for ongoing product development, billed monthly.

  • Two-week sprints and demos
  • Flexible priorities
  • Scale the team up or down

Retainer & support

Peace of mind after launch

A monthly plan covering maintenance, security, monitoring, improvements and on-call expertise for everything we have built for you.

  • Guaranteed response times
  • Monthly health reports
  • Priority feature requests
  • 0+

    Projects delivered

  • 0+

    Automations running in production

  • 0%

    Client satisfaction rate

  • 0+

    Countries served

Technologies we build with

  • Next.js
  • React
  • TypeScript
  • Node.js
  • Python
  • OpenAI
  • Anthropic Claude
  • LangChain
  • HubSpot
  • Salesforce
  • Zoho CRM
  • Shopify
  • WordPress
  • React Native
  • Flutter
  • PostgreSQL
  • MongoDB
  • AWS
  • Google Cloud
  • Vercel
  • Docker
  • n8n
  • Playwright
  • Scrapy

FAQ

API Integration questions, answered

Straight answers on pricing, timelines and how we work. Anything else? We are one email away.

System integration connects separate software applications so they share data and trigger actions automatically, for example syncing website orders to your ERP and accounting software without manual entry.

Ready to start your api integration project?

Tell us about your goals and we will reply within one business day with a clear plan, timeline and pricing. Free consultation, no obligation.