Platform Security Engineer

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Platform Security Engineer in USA new

PhysicsX
Full time
Email

USA
11/12/2026
Report

New York, NY

Responsibilities

Design and implement platform security features and security guardrails.
Serve as the security subject-matter expert for delivery and FDSE teams.
Perform threat modeling, security code reviews, and security design reviews.
Validate and remediate product security vulnerabilities through hands-on work.
Develop secure coding standards and provide developer training and mentorship.
Build automations, integrations, and custom agentic agents to secure the platform at scale.
Collaborate across development teams while managing multiple security initiatives.

Requirements

10+ years of application security experience with a strong focus on design reviews and threat modeling.
Experience building agents to augment or assist security teams.
Strong understanding of AI security fundamentals.
Hands-on secure coding experience covering the OWASP Top 10 and advanced industry-specific threats.
Strong developer skills and experience shipping production code in high-stakes environments.
Experience with Python, Go, CI/CD, and IaC.
Experience balancing security rigor with pragmatism in fast-paced teams.
Strong communication skills and the ability to work across development teams.
Preferred: cloud security and incident response experience, experience in restricted environments, US citizenship, bug bounty participation, familiarity with BSIMM, and experience with identity and access management and cloud-native services.

Benefits

Hybrid work model combining time in the New York office with work-from-home days.
Equity options.
5% 401(k) contribution.
Free team lunch once per week.
Private health insurance.
Enhanced parental leave, including 3 months of fully paid paternity leave and 6 months of fully paid maternity leave.
20 days of annual leave plus public holidays.
Personal development and learning support.
Subsidized Gympass/Wellhub for the employee and up to three family members.
Flexible Spending Account (FSA).

PhysicsX

PhysicsX builds an AI-driven simulation software stack that enables high-fidelity, multi-physics modeling and optimization for engineering and manufacturing teams. The company sells software and delivery services to enterprises in aerospace and defense, automotive, semiconductors, materials, and ...

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