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Sr Technical Security Engineer

New York, NY 10003

Posted: 12/10/2025 Job Category: Software Development Job Number: 21752

Job Description

Sr. Technical Security Engineer, W2 remote
Minimum Requirements
  • 5+ years of experience in application or product security, with a track record of securing desktop and mobile applications.
  • Strong understanding of secure architecture for thick clients, including local storage protection, inter-process communication, JavaScript engines, OS-level security features, and web security standards (CSP, same-origin policy, TLS/HTTPS).
  • Experience with mobile (iOS/Android) and desktop (Windows/macOS/Linux) application security models.
  • Proficiency in GenAI security, modern cryptography, certificate management, secure authentication (OAuth, WebAuthn, FIDO2), and secure session handling.
  • Knowledge of OS-level hardening techniques, sandboxing, privilege separation, and secure use of platform APIs.
  • Hands-on experience with secure coding practices in at least one systems language (C++, Rust, Go) and one application language (Kotlin, Swift, C#).
  • Familiarity with static/dynamic analysis tools, fuzzing, penetration testing, and reverse engineering for client applications.
  • Experience embedding security into the software development lifecycle (threat modeling, code reviews, secure design patterns).
  • Ability to manage incident response and vulnerability remediation for thick client environments.
  • Strong cross-team communication skills and ability to write clear developer-facing security guidelines.
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