Senior Security Engineer I, Application Security
Core
Senior Application Security Engineer designing AI-driven security automation and leading secure architecture for complex payment systems.
Role type
Senior IC application security engineer (AI/LLM focus)
Builds
Automated security review workflows, secure design reviews, and AI-integrated application defenses
Domain
Fintech / Payments / AI Security
Deliverable
production ML models | product features
Required skills
Application security, web application penetration testing, source code auditing, security tool tuning (SAST/DAST/SCA), cryptography, OAuth2/SAML/SSO, Python, Ruby on Rails, Java, JavaScript, Node.js, AWS, Docker, GitLab CI, prompt engineering, LLM pipeline integration, OWASP Top 10 for LLMs
Preferred skills
AI-driven automation, emerging AI vulnerability research, SOC 2/PCI-DSS compliance alignment
Technologies
Python, Ruby on Rails, Java, JavaScript, Node.js, AWS, Docker, GitLab CI, Claude, LLM APIs
Responsibilities
Design and deploy AI-driven automated security review workflows; lead secure design reviews and threat modeling for payment systems; perform deep-dive source code audits and live application testing; tune security tools to eliminate noise; mentor engineers on traditional and AI-specific vulnerabilities; align technical controls with compliance standards
Seniority
Senior, hands-on IC
