Tools:Node.js • TypeScript • PostgreSQL • Docker
Skills:Backend Engineer • Security Engineer

Strict trust boundaries Ensuring that untrusted actors cannot gain access to secure enclaves without multi-factor authorized requests
Implemented an AES-256 encryption layer that encrypts all payloads before they touch the database. The encryption keys themselves are vaulted separately
Backend: Node.js, TypeScript
Database: PostgreSQL
Security: AES-256, JWT, Bcrypt

A distributed, horizontally scalable polling system with sub-50ms latency
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A high-integrity, ACID-compliant double-entry ledger system designed for transactional idempotency and financial auditability
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An end-to-end disease surveillance system integrating real-time data ingestion with ML for outbreak prediction
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