Design and develop security & identity features: MFA, authentication, fraud detection, transaction signing, encryption.

Apply cryptography standards for data protection (encryption at rest/in transit, key management).

Develop middleware, validation (Joi/AJV), logging (Winston/Bunyan), and monitoring (PM2).

Perform database design, migration, tuning (MSSQL/Oracle) with CRUD operations.

Handle authentication mechanisms, JWT/JWS/JWE, and secure integrations.

Troubleshoot, fix defects, and resolve integration & application issues.

Participate in threat modeling, secure design reviews, and Agile SDLC processes.

Work closely with Development Lead, PM, and Support teams on technical solutions.

Knowledge of async programming, promises, cron jobs, file operations, lodash.

Bonus: Experience with Firebase, Keycloak, OpenBao, RSA Fraud tools, AI tools.

Preferred: Backend programming or cybersecurity certification.

Stro...