Ali Saad

Architecture showcase

Enterprise integration architecture

  1. Source system
  2. Extract
  3. Transform
  4. Validate
  5. Target system
Problem
Each customer needs data from a core platform delivered in its own format to external systems such as payroll.
Architecture approach
Keep shared extraction logic in a core layer and isolate customer-specific transformation and formatting in per-customer modules.
Result
New customer requirements are delivered as modules without changing shared code.

API architecture

  1. Client
  2. REST API
  3. Business layer
  4. Data access
  5. SQL Server
Problem
Clients need a stable contract that does not depend on how data is stored.
Architecture approach
Expose REST endpoints over a business layer and a data access layer, keeping logic out of controllers.
Result
Services that are easier to maintain and scale, the direction taken in finance modernization work.

Legacy modernization architecture

  1. WCF service
  2. Contract mapping
  3. .NET Core API
  4. Angular client
Problem
Legacy WCF services limited maintainability while production systems had to keep running.
Architecture approach
Migrate service by service, mapping existing contracts to REST APIs so behavior stays stable.
Result
An API-first architecture with better maintainability and scalability.

Reporting data flow architecture

  1. Source data
  2. Record builder
  3. RecordInfo
  4. Print pass
  5. HTML or PDF
Problem
Printing inline while traversing data made layout fixes risky and spread logic across the report.
Architecture approach
Fill a record first, then print from it in a second pass.
Result
Consistent HTML and PDF output, with layout changes isolated from data logic.

Authentication flow

  1. User
  2. Client application
  3. Credential provider
  4. MFA verification
  5. Access granted
Problem
Enterprises need strong authentication at the point of sign-in across desktop environments.
Architecture approach
Integrate at the sign-in step through a credential provider and require multifactor verification before granting access.
Result
Stronger enterprise authentication workflows.

Enterprise application architecture

  1. Browser
  2. Portal modules
  3. Shared services
  4. SQL Server
Problem
Several departments needed different functionality inside one large, long-lived platform.
Architecture approach
A modular structure where modules share common services, with SQL optimization focused where lists and reports are heaviest.
Result
A maintainable platform supporting HR, Finance, IT and Supply Chain operations.