Senior Information Security Auditor (Technical) – TISAX, NIST & CMMC (GTO, Montreal, Ottawa)

Seratos is seeking an experienced Senior Information Security Auditor to join our growing consulting practice. This client‑facing role is focused on delivering information security auditing, compliance assessments, and certification readiness services across multiple security frameworks, with particular emphasis on ISO/IEC 27001:2022, TISAX® (VDA ISA), NIST Cybersecurity Framework (CSF), NIST SP 800-171, and Cybersecurity Maturity Model Certification (CMMC) .

The successful candidate will lead ISMS audits, conduct technical and governance assessments, perform gap analyses, facilitate readiness activities, and support clients throughout certification and regulatory audit processes. This role requires a strong technical understanding of information security controls, risk management, secure system architectures, and compliance frameworks.