Developer needed for APIs SDK Development by C#,VB and C++ for ASP.Net

The deliverable is: API SDK for endpoints resources API Restful (Library dll and source code as VS Project ) for online payment gateway like stripe We are looking for freelancer API SDK developer The programing languages: C#,VB,C++ for ASP.net platform SDK Development: APIs RESTFUL RESOURCES END POINTS API Server URL: [login to view URL] API Live Mode: add/send request param “livemode=true” in all requests API Test Mode: add/send request param “livemode=false” in all requests Charge — List: GET /api/charge — Create: POST /api/charge — Update: PUT /api/charge/{charge_id} — Retrieve: GET /api/charge/{charge_id} — Delete: DELETE /api/charge Source — List: GET /api/customer/{customer_id}/sources — Create: POST /api/customer/sources — Update: PUT /api/sources/{id} — Retrieve: GET /api/sources/{id} — Delete: DELETE /api/sources/{id} — Create Attach: POST /api/customer/{customer_id}/sources — Attach: POST /api/customer/{customer_id}/sources/{id} — Detach: DELETE /api/customer/{customer_id}/sources/{id} Customer — List: GET /api/customer — Create: POST /api/customer — Update: PUT /api/customer/{customer_id} — Retrieve: GET /api/customer/{customer_id} — Delete: DELETE /api/customer Checkout Session — List: GET /api/session — Create: POST /api/session — Update: PUT /api/session/{id} — Retrieve: GET /api/session/{id} — Delete: DELETE /api/session/{id} Refund — List: GET /api/refunds — Create: POST /api/charge/{charge_id}/refunds — Update: PUT /api/refunds/{id} — Retrieve: GET /api/refunds/{id} — Delete: DELETE /api/refunds/{id} Reviews: — List all open reviews: GET /api/reviews — List all open reviews: GET /api/charge/{charge_id}/reviews — Approve: PUT /api/reviews/{id}/approve — Decline: PUT /api/reviews/{id}/decline — Retrieve: GET /api/reviews/{id} Namespace: - FlospayApi - [login to view URL] - [login to view URL] - [login to view URL] - [login to view URL] Classes: - Charge - Customer: - Source - Session - Refund - Review Constants fields in all classes: - publishable_key - secret_key - session_id - client_secret token - livemode Methods: - names: - all(array filter) : array of objects : return List object - create(array data or model object) : object : create new object - update(string id , array data or model object) : object : update the updated object - Retrive(string id) : object : return the object - delete(string id) : delete the object - Parameters: - Request - Response - Auth keys / Access tokens. - Exceptions and error handling File Structures: ?FlospayApi\ — ?Flospay Main class — ?Endpoints\ — — ?Charge — — ?Customer — — ?Source — — ?Session — — ?Refund — — ?Review — ?HttpClient\ — — ?Request — — ?Response — ?Exceptions\ — — ?CardErrorException — — ?SourceErrorException — — ?ChargeErrorException — — ?RefundErrorException — — ?ResourceErrorException — — ?ApiRequestErrorException — — ?RateLimitError — — ?ValidationError — — ?AuthenticationError — — ?ApiConnectionError