Ishika Jaiswal

I’m a security-minded web developer focused on building resilient, tamper-resistant backend systems and improving reliability under real-world constraints. I’ve shipped full-stack products and emphasized performance, observability, and defensive design.

As a Web Developer Intern at Expelee FZCO, I engineered full-stack products (ZammenCalc and Memorwall API) and reduced PostgreSQL query latency by 40% using composite indexing. I also audited distributed LMS codebases to identify attack surfaces, insecure flows, and reliability failures—my findings were adopted by the engineering team.

Across projects, I built abuse-resistant systems like a KIIT Fest event security backend with QR replay prevention and strict identity enforcement, plus an AI documentation generator designed for cost-efficient abuse prevention. I also work on Smart Contract Security Engineering, building 30+ Solidity contracts and validating them with fuzz/invariant testing to mitigate vulnerabilities such as reentrancy, access-control bypass, and signature replay.