Application Security Engineer — AI-First SaaS Security

intercom; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Job summary

Fin, now part of Salesforce, is transforming customer service with AI-powered security. The Security Engineering team builds tier-zero protections, authentication, SAML/SSO, and enterprise controls to keep customers safe.

As a security engineer, you will partner with engineering across the SDLC, perform threat modeling and architecture reviews, and lead incident response in a fast-growing SaaS environment.

Qualifications

• Proven experience in SaaS security, focusing on application security and secure development practices.
• Experience designing or securing authentication, identity, or enterprise security capabilities.
• Strong understanding of security threats, threat modeling, and secure SDLC.

Responsibilities

• Own and engineer tier-zero security capabilities that help customers securely deploy Fin.
• Design, build, and evolve authentication, SAML/SSO, permissions, audit logging, and enterprise security controls.
• Partner with engineering teams across the SDLC to build secure products and services.
• Perform architecture reviews and security assessments for new features and systems.
• Lead security incident response, investigations, and remediation efforts.

Skills

Application security

Production systems

Threat modeling

Authn/Authz

Security assessments

Incident response

Automation

AI-assisted tools

Communication

Security trade-offs

Job description

Fin, now part of Salesforce, is transforming customer service with AI-powered security. The Security Engineering team builds tier-zero protections, authentication, SAML/SSO, and enterprise controls to keep customers safe.

As a security engineer, you will partner with engineering across the SDLC, perform threat modeling and architecture reviews, and lead incident response in a fast-growing SaaS environment.