Principal Digital Security Architect

Key Responsibilities

1. API & Ecosystem Architecture

• The API Fortress: Architect the security layer for our API Gateway (e.g., Kong,

Apigee, AWS Gateway). Define global policies for Rate Limiting, Throttling, and Authorization (preventing BOLA/IDOR attacks).

• Supply Chain Security: Design secure integration patterns for our 3rd party partners

(Fintechs, Credit Bureaus, Payment Processors). Ensure their insecurities do not become our breaches.

• Microservices Mesh: Define how our internal services trust each other. Move from

"Network Trust" to "Cryptographic Trust" using mTLS and Service-to-Service authentication.

1. Identity & Access Management (CIAM)

• Identity Strategy: Own the architecture for Customer Identity (CIAM). Design flows for

Biometric Binding, Adaptive MFA, and Step-Up Authentication for high-value transactions.

• Token Lifecycle: Define the standards for OAuth 2.0 and OpenID Connect (OIDC).

Ensure we are using Financial-grade API (FAPI) standards for token issuance, revocation, and storage.

1. Secure Development Lifecycle (SDLC)

• Threat Modeling: Lead "Whiteboard Hacking" sessions with product owners. Identify

business logic flaws (e.g., race conditions in ledgers, bypassable KYC steps) before a single line of code is written.

• Paved Roads: Work with DevOps to architect secure-by-default libraries. (Example:

Create a standard "Encryption Wrapper" library that all developers must use, so they don't invent their own crypto).

1. Data Privacy & Cryptography

• Data Defense: Define the architecture for Field-Level Encryption (FLE) in the

database for PII and Banking Secrets.

• Privacy Engineering: Architect systems that support "Right to be Forgotten"

(GDPR/CCPA) without breaking the immutability of the financial ledger. Strategic Deliverables

• Identity Patterns: Deliver new security design patterns and components for

authentication, authorization, SSO, MFA, and Partner security to ensure seamless and secure user access.

• Mobile & Edge: Deliver new security design patterns and components for Mobile

security, ensuring consistency between iOS, Android, and the backend.

• Modern Tech Stack: Deliver API, container, cloud, and AI security design patterns to

support the bank's move toward intelligent, cloud-native infrastructure.

What We Are Looking For

1. The Background

• 8+ Years Experience: A mix of Software Engineering and Security Architecture.
• Ex-Developer: You must be able to read code (Java, Kotlin, React or Node.js, ).
• Banking/Fintech Experience: Strong preference for candidates who have secured

payment gateways, ledgers, or wallets.

1. The Technical Skills

• API Security: Deep mastery of REST and GraphQL security.
• Auth Protocols: You can draw the OAuth 2.0 Authorization Code Flow with PKCE

from memory. You understand JWT signing and JWKS key rotation.

• Mobile Security: Understanding of how mobile apps store secrets

(KeyStore/Keychain) and how to prevent API abuse from emulators/bots.

1. The Mindset

• Business Aligned: You understand that a bank exists to process transactions. You

design security that reduces risk without destroying the User Experience (UX).

• Pragmatic: You know when to demand a "Blocker" fix and when to accept a "Risk

Acceptance" waiver.