Senior AppSec Engineer - AI-Driven Security & SDLC

Flywire; Hinoba-an; On-site; PHP 2,500,000 - 3,600,000; Full time

Benefits offered by this job

Competitive compensation

ESPP

Global Induction

Global team

Wellbeing

Volunteer days

Disconnect days

Talent development

Job summary

Flywire seeks a Senior Security Engineer I, Application Security to bridge robust defense with rapid innovation. Drive AI-driven security automation, conduct advanced threat modeling, and lead secure design reviews for complex payment systems. Collaborate with engineering, mentor teams, and own S-SDLC controls in a global, hybrid environment.

The role emphasizes proactive security tooling, cloud and DevOps practices, and strong communication with stakeholders across the business.

Qualifications

• 5+ years in Application Security with web apps.
• Experience in code auditing and product assessments.
• Ability to build tooling and security workflows.
• Capable of explaining findings to non-technical teams.

Responsibilities

• Design and deploy AI-driven security review workflows in CI/CD.
• Lead secure design reviews and threat modeling for payments systems.
• Collaborate with Engineering to address security issues.
• Perform deep-dive source code audits on high-risk features.
• Own automated security controls across the SDLC.
• Mentor junior engineers and product teams on security.

Skills

Application Security

Penetration Testing

Code Auditing

Automation

AI Security

Cloud & DevOps

AWS

CI/CD

SAST/DAST

Tools

Claude

LLM APIs

GitLab CI

Docker

Job description

Flywire seeks a Senior Security Engineer I, Application Security to bridge robust defense with rapid innovation. Drive AI-driven security automation, conduct advanced threat modeling, and lead secure design reviews for complex payment systems. Collaborate with engineering, mentor teams, and own S-SDLC controls in a global, hybrid environment.

The role emphasizes proactive security tooling, cloud and DevOps practices, and strong communication with stakeholders across the business.