X
X· HQ in United States

Sr. Application Security Engineer

Location: Palo Alto, CA · Category: Engineering & Development · Seniority: Senior · Posted: August 29, 2026 · Verified: Nov 13, 2026

Role Overview & Description

This senior role focuses on application security, ensuring the security of software applications throughout the development lifecycle. Responsibilities include conducting security reviews, threat modeling, and implementing security controls. The ideal candidate has strong experience with application security testing, secure coding practices, and common vulnerabilities.
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Source & Transparency: This position was structured directly from the publicly accessible career portal of X. Details on the employer’s original job posting are authoritative. Polaris7 charges no placement fees and conducts no candidate screening.
Company IntelligenceVerified Profile

Operator of X, a social platform monetised through ads, subscriptions and API access.

Headquarters: United States

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