Identity Security Engineer - Cloud & SSO Lead

Millennium; New York (NY); On-site; USD 175,000 - 250,000; Full time

Benefits offered by this job

Base salary

Discretionary bonus

Comprehensive benefits

Job summary

Millennium in New York seeks an experienced Identity Security Engineer to lead security consulting and engineering for identity platforms, including Entra ID, Active Directory, and authentication protocols across on‑premises and cloud environments.

You will shape the identity security roadmap, define security policies, mentor engineers, and partner with Technology, Trading, Legal and Compliance to strengthen access controls and protect critical systems.

Qualifications

• 10+ years in a technical role with 5+ years in information security
• Bachelor’s degree in Computer Science, Engineering, or a related field
• Strong experience with Microsoft security solutions across desktop/server OS, Entra ID, AD, Group Policy, DNS, and collaboration tools

Responsibilities

• Lead security consulting and engineering for Windows, Active Directory, Entra ID, and related identity security solutions
• Define and execute authentication platform strategies across on‑premises and cloud environments
• Serve as a technical authority on SAML, OpenID Connect, OAuth 2.0, Kerberos, including SSO and PKI
• Assess identity risks and communicate remediation plans to senior stakeholders
• Shape the identity security roadmap by evaluating emerging technologies and threats
• Lead identity-related workstreams during security incidents; containment and root-cause analysis
• Partner with Technology, Trading, Legal, Internal Audit and Compliance to enforce identity policies
• Establish production-readiness, documentation, and mentor junior engineers

Skills

Security engineering

Identity security

Entra ID

Active Directory

CI/CD pipelines

Microsoft 365 security

DLP / Azure Information Protection

EDR / SIEM

Regulatory compliance

Education

Bachelor’s degree in Computer Science/Engineering or related field

Tools

Entra ID

Active Directory

Group Policy

PKI

Job description

Millennium in New York seeks an experienced Identity Security Engineer to lead security consulting and engineering for identity platforms, including Entra ID, Active Directory, and authentication protocols across on‑premises and cloud environments.

You will shape the identity security roadmap, define security policies, mentor engineers, and partner with Technology, Trading, Legal and Compliance to strengthen access controls and protect critical systems.