Senior Security Engineer — Cloud & AI Security

FastSpring, LLC; Northern (KY); Hybrid; USD 155,000 - 187,000; Full time

Job summary

FastSpring is seeking a Sr. Security Engineer to join the Agentic Experience group, strengthening security of our core payments platform and shaping AI-assisted development security practices. You will collaborate with the CISO and executives on security strategy and governance.

This hands-on role covers application, cloud, and tooling security, including vulnerability remediation, IAM governance, PCI DSS compliance, and security standards across engineering teams.

Qualifications

• 7+ years of hands-on security engineering experience (application, cloud, or infrastructure).
• Strong experience with AWS security services and primitives (IAM, VPC, secrets).
• Experience securing large production codebases; JVM ecosystem experience preferred.
• Familiarity with AI-assisted development tools and their security implications.
• Strong prioritization and communication; ability to advocate for security investments.
• Experience in payments/fintech or regulated environments is a plus.
• Certifications (e.g., CISSP, OSCP, AWS Security Specialty) are a plus but not required.

Responsibilities

• Identify, prioritize, and remediate vulnerabilities across our Java-based platform and AWS infrastructure.
• Drive infrastructure security improvements, including IAM policy refinement, instance metadata protections, and network egress controls.
• Conduct security reviews of AI-assisted development pipelines, tool integrations, and agent-accessible services.
• Develop and maintain secure development standards, patterns, and guardrails for engineering teams.
• Partner with the fractional CISO on risk assessment, remediation planning, and PCI DSS compliance.
• Contribute to incident response readiness and security monitoring improvements.
• Communicate security priorities and progress clearly to technical and executive stakeholders.

Skills

Security engineering

AWS security

JVM ecosystem

AI security

Stakeholder comms

Payments fintech

Certifications

Job description

FastSpring is seeking a Sr. Security Engineer to join the Agentic Experience group, strengthening security of our core payments platform and shaping AI-assisted development security practices. You will collaborate with the CISO and executives on security strategy and governance.

This hands-on role covers application, cloud, and tooling security, including vulnerability remediation, IAM governance, PCI DSS compliance, and security standards across engineering teams.