Santanu Raj

I’m a security-focused Software Engineer Intern who builds production-minded features with threat-aware engineering. I enjoy transforming security requirements into reliable systems—whether that’s tightening authentication, monitoring logs, or designing secure APIs.

At BlueStock Fintech, I automated financial data ingestion workflows with Python, cutting manual effort by 40% while adding anti-bot checks. I also hardened JWT-based authentication flows and configured custom AWS WAF rules and API rate-limiting—blocking 200+ malicious requests daily and maintaining 99.9% availability with zero reported token breaches.

As an AI Intern at TechSaksham with Microsoft, I developed a full-stack fitness tracker with secure authentication and practices that prevented XSS and SQL injection vulnerabilities. I engineered telemetry-based exception detection to reduce issue resolution time by 30%, and built secure Python ETL pipelines that improved daily log data accuracy to 99%.

In my projects, I designed a production-ready Node.js backend for NexusFund, securing REST APIs against XSS/NoSQL injections and integrating Stripe Webhooks. I also built Shado Text, a secure distributed messaging engine achieving sub-50ms latency with end-to-end cryptography, and I keep sharpening my craft through TryHackMe labs (SOC, DFIR, SIEM, Malware Analysis) and security certifications.