SophistiPay

Context

SophistiPay is a fintech product where I worked as a contract developer across the mobile app, the backend services, and the deployment layer. Payment processing means security and auditability come before everything else.

What I worked on

• Built production fintech features with Flutter and Golang.
• Designed secure REST APIs and backend services for payment processing.
• Managed AWS infrastructure and deployment workflows.
• Implemented automated CI/CD pipelines with GitHub Actions.
• Worked across frontend, backend, and deployment to deliver new features.

What the system taught me

Owning the whole path from UI to deployment makes the tradeoffs visible. A schema change is not just a migration, it is a mobile release you cannot roll back, an API contract other services depend on, and a deploy that has to be safe to run twice. Thinking in those terms early saves painful cleanup later.