04 · Payments · Notion
Credit Card Payment Gateway
Integrate with Rapid Connect to process card payments across multiple industries, transaction scenarios and validation forms using the host-capture model.
Project context — organizations, products, and platforms evidenced in the source
Payology
Rapid Connect / FirstData- Role
- Back-End
- Domain
- Payments
- Sources
- Notion
- Published artifacts
- 3
Evidence archiveWide Payology branded cover.

Context
The problem and its boundary.
Integrate with Rapid Connect to process card payments across multiple industries, transaction scenarios and validation forms using the host-capture model.
Decisions & deliverables
- FirstData integration research and documentation
- Behavior-pattern analysis from FirstData test scenarios
- Mandatory, optional, common and uncommon tag analysis
- Tag relationship model described as a tag neural network
- Merchant-terminal collection endpoints
- Organization and recurring-payment data structure
- Relational table design
- Parser and integration factories
- Jest integration tests
- SRS / Datawire ID registration and activation specification
- Sending-transactions flow
- A structured inventory of 102 fields and their metadata
Technology
- Node.js
- TypeScript
- Amazon SQS
- Knex
- PostgreSQL
Evidence archive
Real diagrams, interfaces and documents.
Open any artifact to inspect the full local image.
What this archive can prove
Published authorship. Claims proportional to the source.
- No repository, public product link, quantified result, date, scale or certification outcome is present.
- The page documents certification scenarios but does not prove that certification was achieved.
- The 102-field table has no standalone structured export in the archive.

