Identity Security Engineer

Millennium•New York, NY

1d•$175,000 - $250,000

About The Position

Millennium is a global, diversified alternative investment firm, founded in 1989. Defined by evolution, innovation and focus, Millennium’s mission is to deliver results for our investors. Our people are empowered with both independence and support: the autonomy to pursue ideas with conviction and the backing of a global network committed to collaboration, disciplined risk management and continuous learning. With opportunities to deepen expertise and accelerate development, talent at Millennium is equipped to adapt, evolve and build lasting impact over time. Discover how transformative growth accelerates impact. Core to the health and growth of our business, Millennium’s Information Technology organization supports a flexible, scalable technology environment powered by advanced proprietary systems and the continued development of next-generation analytical and trading capabilities. The Information Security team partners across the firm to protect Millennium’s information and computer systems from internal and external threats, building and operating a robust security program across a complex technical environment.

Requirements

10+ years of experience in a technical role, including 5+ years focused on information security; financial services experience is preferred
Bachelor’s degree in Computer Science, Engineering, or a related field
Strong experience engineering Microsoft security solutions across desktop and server operating systems, Entra ID, Active Directory, Group Policy, Desired State Configuration, DNS, and collaboration platforms
Experience managing IaaS and SaaS solutions and services through CI/CD pipelines
Strong understanding of modern authentication protocols and associated identity security controls
Experience with Microsoft 365 security controls, including Entra ID, Conditional Access, and Foundry
Experience implementing data loss prevention and Azure Information Protection solutions, including data classification, labeling, encryption, and regulatory compliance

Nice To Haves

Familiarity with EDR, SIEM, vulnerability management, and relevant security certifications is a plus

Responsibilities

Lead security consulting and engineering for Windows, Active Directory, Entra ID, and related identity security solutions, setting technical direction for the design and development of new capabilities
Define and execute the vision, strategy, architecture, and implementation of authentication platforms across on-premises and cloud environments
Serve as a technical authority on SAML, OpenID Connect, OAuth 2.0, and Kerberos authentication, including single sign-on, PKI, and associated identity controls
Assess identity management risks and threats, and communicate remediation plans to senior technical and business stakeholders
Shape the identity security roadmap by evaluating emerging security and privacy technologies, trends, and threats against key business initiatives
Lead identity-related workstreams during information security incidents, including containment, root-cause analysis, and post-incident hardening
Partner with senior stakeholders across Technology, Trading, Legal, Internal Audit, and Compliance to define, govern, and enforce identity and access security policies
Establish production-readiness, documentation, and operational standards for identity security solutions, while mentoring junior and mid-level security engineers