API Development & Integration Services
Erudite Solutions designs and builds secure APIs, and integrates third-party services, payment gateways, and business systems, so applications can share data and work together reliably instead of operating as disconnected silos.
API Development & Integration Capabilities
Custom REST API Development
Designing and building REST APIs from scratch for new or existing applications.
Third-Party Integration
Connecting applications with external services such as accounting software, payment providers, and government systems.
Authentication & Security
Implementing OAuth, token-based authentication, and access control for every API we deliver.
Webhooks & Event-Driven Integration
Building webhook-based flows so systems react to events in real time instead of polling for changes.
Real-World API Integration: FBR Digital Invoicing
One of our integration projects connected a client's invoicing workflow to Pakistan's FBR Digital Invoicing API and bridged it with QuickBooks, so invoices generated in QuickBooks are automatically submitted for digital compliance without manual re-entry. It's a practical example of the kind of system-to-system integration work we do — read more in our case studies.
Business Problems API Integration Solves
Manual data entry between systems is slow and error-prone — a sale recorded in one system that has to be typed again into another, or a compliance requirement that needs data submitted in a specific format to a government API. Integration work removes that manual step, letting systems exchange data directly and reliably, which reduces both the workload and the chance of mismatched records between systems.
API Development for .NET Applications
Most of the APIs we build are on .NET, using ASP.NET Core Web API with Entity Framework Core for data access. This gives us a consistent, well-tested foundation for building endpoints that are fast, secure, and straightforward for other teams to integrate against, whether the API is serving a mobile app, a frontend, or another backend system entirely.
Integration for SaaS and Enterprise Applications
SaaS products and enterprise applications rarely operate in isolation — they need to connect to payment gateways, customer tools, and other internal systems. We design integration layers with that reality in mind, so new connections can be added later without redesigning the application's core.
Security and Scalability
Every API we build includes authentication, input validation, and rate limiting appropriate to its use case, since an API is often a system's most exposed surface. We also design with scalability in mind — an integration that works for a handful of requests a day should still hold up as volume grows, without needing to be rebuilt.
Our API Development Process
We start by mapping the data and workflows that need to move between systems, then design the API contract before writing implementation code, so both sides of an integration agree on the shape of the data upfront. Each API is documented, tested against realistic scenarios, and reviewed for security before it's connected to a production system.
Why Choose Erudite Solutions?
Real Integration Experience
Delivered integrations with government and third-party financial systems.
Security-First Design
Authentication and access control built into every API.
Documented and Maintainable
APIs delivered with documentation other teams can build against.
Global Delivery
Serving clients worldwide through remote collaboration.
Frequently Asked Questions
What kinds of APIs do you build?
Primarily REST APIs built with .NET or Node.js, designed to expose application functionality securely to other systems.
Can you integrate with third-party and government systems?
Yes — we've built integrations with accounting software and government digital invoicing systems.
Do you handle authentication and security for APIs?
Yes, including OAuth authentication, token management, and access control.
Do you write API documentation?
Yes, documentation is part of every API project so other teams can integrate without guesswork.
Can an existing application get an API without a full rebuild?
In many cases yes — often as part of a broader legacy application modernization effort.
Do you support clients outside Pakistan?
Yes, this is a core service we deliver to businesses worldwide.
