Senior Full Stack Engineer

About the Role
Drive the Developer Experience (DX) and Operational Efficiency of the Payment Hub. You are responsible for creating the Face of the infrastructure: a seamless, embeddable SDK and a powerful, secure Command Center (Operations Portal) for our Finance and Ops teams.
What You'll Be Doing
White-Label Checkout SDK: Build a high-performance, modular Embeddable SDK/Widget that supports secure field-level encryption for sensitive payment data on the frontend.
Dynamic UI Logic: Ensure the widget intelligently displays payment methods based on backend routing logic and regional availability.
Internal Operations Portal: Build a robust dashboard for real-time monitoring, manual refunds, and PSP configuration management using Clean Frontend Architecture.
Secure Communication: Implement secure practices such as iFrames isolation, PostMessage API, and Content Security Policy (CSP) to protect transaction data.
Cryptography Integration: Work with the backend team to i...