Payments & integration
Secure Online Payment Platform
A production payment workflow with secure transaction processing, banking-style integration boundaries, auditability, and recurring compliance-focused upgrades.
Passed stringent third-party security testing
- REST / SOAP integrations
- ASP.NET payment workflows
- SQL Server · AWS
Overview
A production payment workflow with secure transaction processing, banking-style integration boundaries, auditability, and recurring compliance-focused upgrades.
Business Problem
Payment systems need reliability, traceability, controlled access, and low-risk upgrade paths without interrupting business operations.
Constraints
Fully implemented on AWS with production-oriented deployment, operational support, and compliance-focused upgrade planning.
My Role
Backend engineer supporting secure integration design, implementation, regression planning, and production upgrade cycles.
Architecture
API-first workflow with explicit request/response contracts, SQL Server-backed traceability, audit logging, access controls, and operational failure handling.
Technical Decisions
Implemented backend payment workflows, integration contracts, validation, audit-oriented controls, regression planning, and annual upgrade support that passed stringent third-party security testing.
Implementation
Fully implemented on AWS with production-oriented deployment, operational support, and compliance-focused upgrade planning.
Results
Improved trust in recurring payment-platform upgrades by keeping security testing, release planning, and production continuity central to the work.
Lessons / Tradeoffs
The public project record describes the implementation and outcomes above. Detailed alternatives, internal decision records, and retrospective findings are not published here.
Technology
AWS · C# · ASP.NET · SQL Server · REST/SOAP · Security · PCI-style controls