API Development & System Integration
- REST, GraphQL, gRPC and event-driven architectures
- ERP, CRM, payment and SaaS platform connectors
- OpenAPI-first design with versioning and developer docs
- Built-in retries, idempotency, monitoring and alerting
Why API & Integration with VN Softverg
Most businesses run on a dozen or more systems: ERP, CRM, e-commerce, payments, HR, support desks and in-house apps. When they don't talk to each other, people end up re-keying data, reconciling spreadsheets and making decisions on stale information. Integration fixes that.
We design and build APIs that are secure, versioned and well documented, and we connect them to the platforms you already use, including SAP, Salesforce, Microsoft Dynamics, Shopify, Stripe, Razorpay and many more. Depending on the need, we use synchronous REST or GraphQL, asynchronous messaging with Kafka or RabbitMQ, or integration platforms like MuleSoft and Azure Integration Services.
Every integration ships with monitoring, retries, idempotency and alerting, so failures are visible and recoverable rather than silently corrupting data.
Everything you need, under one roof
API Design & Development
Contract-first REST and GraphQL APIs with OpenAPI or schema definitions, consistent error handling, pagination and versioning.
- OpenAPI 3 / GraphQL schema
- API service implementation
- Developer documentation portal
Enterprise System Integration
Two-way data sync between ERP, CRM, HRMS and finance systems such as SAP, Salesforce, Microsoft Dynamics 365, Zoho and Tally.
- Integration architecture and data mapping
- Connector services
- Reconciliation reports
Event-Driven & Messaging
Asynchronous integration using Apache Kafka, RabbitMQ, AWS SQS/SNS or Azure Service Bus for decoupled, resilient systems.
- Event schema catalog
- Producer and consumer services
- Dead-letter queue and replay handling
Third-Party & Payment Integrations
Payment gateways, shipping, SMS, email, maps and identity providers, including Stripe, Razorpay, PayPal, Twilio, SendGrid and Google APIs.
- Gateway integration with webhooks
- Sandbox and production configuration
- Failure and retry handling
API Gateway & Security
Centralized authentication, rate limiting and analytics with Kong, AWS API Gateway or Azure API Management, secured with OAuth 2.0 and JWT.
- API gateway configuration
- OAuth 2.0 / OIDC security setup
- Rate limiting and usage policies
Integration Platforms (iPaaS)
Low-code and enterprise integration using MuleSoft, Azure Logic Apps, Apache Camel or n8n where they're the better fit.
- iPaaS flow designs
- Reusable integration templates
- Monitoring and alert configuration
Measurable from day one
Every API delivered with an OpenAPI or schema specification.
Response time goal for synchronous API calls under expected load.
Every failed message is logged, alerted and replayable.
For a standard two-system integration, depending on complexity.
A clear path from kickoff to results
Integration Audit
Inventory systems, data flows, volumes and pain points across your landscape.
Contract & Mapping
Define API contracts, data mappings, ownership and error-handling rules.
Build & Test
Develop connectors and APIs with contract tests against sandbox environments.
Deploy & Monitor
Roll out with dashboards, alerts and runbooks for operations teams.
The right stack for the job
- Eliminate manual data entry and the errors that come with it
- Real-time visibility across sales, finance and operations
- Faster partner onboarding with clean, documented APIs
- Resilient integrations that recover from outages automatically
- Freedom to swap or add systems without rebuilding everything
Built for teams like yours
ERP-to-e-commerce sync
Keep inventory, orders and pricing in sync between SAP or Dynamics and Shopify or Magento.
CRM integration
Push leads, deals and customer activity between Salesforce or Zoho and your other systems.
Partner and public APIs
Expose secure, rate-limited APIs to partners, resellers or developers.
Payment & fintech flows
Integrate payment gateways, reconciliation and accounting systems.
Microservices communication
Event-driven backbones that let independent services scale and deploy separately.
REST is simple, cache-friendly and widely supported, making it ideal for most integrations and public APIs. GraphQL suits frontends that need flexible data fetching from many sources. We often use both in the same platform.
Related services
ERP Implementation
ERP selection, implementation and customization on Odoo, Microsoft Dynamics 365, ERPNext, NetSuite and Zoho, from data migration to training and support.
Learn moreCRM Solutions
CRM implementation and customization on Salesforce, HubSpot, Zoho CRM and Dynamics 365, with automation, integrations, data migration and adoption support.
Learn moreCustom Software Development
End-to-end custom software engineering, from discovery and architecture to build, launch and support, using proven stacks like Java, .NET, Python and React.
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