Advait Marathe
Security Engineer — AppSec / Product Security
Summary

A decade across AppSec, cloud security, DevSecOps, vulnerability management, and incident response at startups and public companies. I design and deliver security solutions and work directly with the teams building the product.

Experience
ASAPP Jan 2025 — Present
Lead Security Engineer
  • Led supply chain attack remediation and response across all teams and services.
  • Defined LLM acceptable use policies and led security remediation for AI tooling including Claude Code.
  • Led architecture reviews on several complex systems across the organization.
  • Ran org-wide CTF competition to build AppSec awareness across the engineering team.
Eltropy Aug 2023 — Dec 2024
Sr. Security Engineer
  • Resolved a product security issue blocking an enterprise renewal; saved ~$200k ARR.
  • Joined the Enterprise Architecture group as security SME for product platform decisions.
SentiLink May 2022 — Aug 2023
Security Engineer
  • First security hire — owned AppSec, vuln management, and secure development practices from day one.
  • Automated vuln tracking and SLA enforcement in Python; eliminated manual overhead and reached 100% coverage across all services.
Q2 Nov 2018 — May 2022
Security Engineer / DevSecOps
  • Ran WebApp pentests across 5 products; found OWASP Top 10 issues including XSS and CSRF across multiple codebases.
  • Integrated SAST, secrets scanning, and container scanning into all CI/CD pipelines org-wide — zero secrets post-rollout.
  • Automated repetitive security tasks with Python and F5 APIs; saved $27k/year.
eBay May 2017 — Aug 2017
Software Engineer Intern — Security Operations
  • Built automated vuln reporting for 12,600 employees using Python (Django) and Qualys.