C# APIs and Integrations That Keep Your Systems Talking
Every System Needs to Talk to Another One
Orders live in one platform, stock in another and customers in a third. What keeps them in step is usually a tangle of scripts, exports and one integration nobody wants to touch. C# and .NET are a strong base for replacing that with services you can test, monitor and hand over.
why choose ecomia
Why teams bring us their integration work
Integration projects fail at the edges: the API that times out, the record that arrives twice, the field that means something different in each system. We design for those cases first, because that is where the support tickets come from.
Failure handled by design
Retries, timeouts, idempotent writes and dead-letter handling are part of the first build, not added after the first outage.
Contracts written down
Each API gets a versioned contract and OpenAPI documentation, so the teams consuming it are not guessing what a field means.
Visible in production
Structured logging, health checks and alerts show when a sync falls behind, before a customer or a warehouse notices.
Built to be handed over
Clean service boundaries and tests around every mapping, so your own team or the next developer can extend it safely.
Services
What we build in C#
Most engagements mix new APIs with integrations to systems you already run.
Versioned REST APIs with authentication, rate limits and OpenAPI documentation, built on ASP.NET Core.
gRPC for high-volume service-to-service calls, with clear contracts shared between the teams that depend on them.
Connectors between platforms such as NetSuite, SAP, Salesforce, Shopify and Magento, with field mapping and conflict rules agreed up front.
Scheduled and queue-driven workers using hosted services, Hangfire or Azure Functions to keep inventory, orders and pricing in step.
Webhook receivers and message queues such as Azure Service Bus or RabbitMQ, so systems react to changes instead of polling for them.
Wrappers around older WCF and SOAP services, so modern clients can use them while the old system is retired in stages.
Built Around Your Needs
Choose how you
work with us
Dedicated teams
Need a team that owns your integrations?
A dedicated C# team takes ownership of your APIs and connectors for the long run. They learn your systems, keep the integrations healthy and build new ones as the business adds platforms.
Software outsourcing
Have a defined integration project?
Hand us a scoped project, such as connecting a new ERP to your store, and we deliver it end to end. You get a plan, regular demos and a handover with documentation.
Staff Augmentation
Short on C# capacity right now?
Add experienced C# engineers to your existing team to clear an integration backlog or cover a migration. They work in your tools and your process from day one.
Frequently Asked Questions
ASP.NET Core is well supported and runs on Linux, Windows and containers. It has mature libraries for HTTP, messaging, serialization and authentication, which covers most of what integration work needs.
Usually, yes. If the platform has an API, we build against it; if it only offers file exports or a database, we design a safe sync around that. We confirm the options during discovery, before any estimate.
Writes are idempotent, failed messages are retried and then parked for review, and every sync is logged so a missing record can be traced.
Yes. We can wrap existing services behind a modern API so new clients use them today, then move the logic over in stages. For larger modernization work, see our .NET developers page.
With a short discovery: which systems are involved, how data moves today and where it breaks. From that we propose a plan and an estimate you can review before any build starts.
Let’s Build What’s Next
Talk to our team about your goals
Have a project in mind or a challenge you’re looking to solve? Let’s talk about how we can help you move forward.