Senior Application Security Engineer

United Kingdom (Remote-First) · Ireland · 3+ years experience · Remote · Posted Oct 15, 2026

At a glance

Our leading SaaS-based Global Employment Platform™ enables clients to expand into over 180 countries quickly and efficiently, without the complexities of establishing local entities. At G-P, we’re dedicated to breaking down barriers to global business and creating opportunities for everyone, everywhere.
Our diverse, remote-first teams are essential to our success. We empower our Dream Team members with flexibility and resources, fostering an environment where innovation thrives and every contribution is valued and celebrated.
The work you do here will positively impact lives around the world. We stand by our promise: Opportunity Made Possible. In addition to competitive compensation and benefits, we invite you to join us in expanding your skills and helping to reshape the future of work.
At G-P, we assist organizations in building exceptional global teams in days, not months—streamlining the hiring, onboarding, and management process to unlock growth potential for all.

As a Senior Application Security Engineer, you will support G-P’s application security program, ensuring the safety of both web platforms and integrated AI/LLM systems.
You will evaluate web technologies and AI workflows using enterprise-grade tools, enforce AI security guidelines, and coordinate remediation efforts with engineering teams.

Participate in threat modeling exercises with engineering team members for application and AI-driven architectures
Triage SCA/SAST/DAST/CSPM findings by eliminating false positives and providing well-vetted vulnerabilities to engineering teams
Support vulnerability management efforts for networks and infrastructure
Partner with engineering teams ensuring timely remediation of security findings
Perform security assessments, reviews, and internal penetration tests
Support application security programs and security team initiatives
Develop scripts and tools to automate repetitive security tasks, such as log analysis, patch management, and incident detection.
Build custom solutions to integrate security tools with existing systems using languages like Python, JavaScript, or Go.

BS (or higher) in Computer Science or related field, or equivalent work experience.
3+ years of experience in application security with any combination of the following: threat modeling experience, secure design reviews, code reviews, pen-testing
Excellent communication skills and business acumen
Proficiency in coding/scripting languages (e.g., Python, Go etc.).
Web application penetration testing experience (CTFs, Bug Bounty, etc)
Amazon Web Services (AWS) security and engineering knowledge and experience
Experience with developing or testing web application technologies