Principal Authentication Services Engineer

3M•Maplewood, MN

1d•Hybrid

About The Position

The Principal Authentication Services Engineer is a senior technical leader and subject matter expert within the Identity & Access Management organization. This role owns the architecture, engineering, and lifecycle management of enterprise authentication platforms across a complex global environment -- and plays a meaningful role in shaping the IAM authentication roadmap, org-wide standards, and how authentication capabilities evolve alongside the broader Zero Trust security strategy.

Requirements

Bachelor’s degree or higher (completed and verified prior to start)
Eight (8) years of experience designing, deploying, and managing enterprise Identity and Access Management (IAM) authentication solutions (e.g., Entra ID, Ping Identity, Active Directory) in a private, public, government or military environment
Five (5) years of experience working with modern authentication protocols, including SAML, OAuth 2.0, OpenID Connect (OIDC), and FIDO2 in a private, public, government or military environment
Five (5) years of experience leading complex architectural initiatives, conditional access hardening, or Zero Trust security programs in a private, public, government or military environment
Must be legally authorized to work in the country of employment without sponsorship for employment visa status (e.g., H1B)

Responsibilities

Own the engineering design, implementation, and operational health of Microsoft Entra ID, Active Directory, and federated identity services across the enterprise
Architect and maintain SSO integrations (SAML, OIDC, OAuth 2.0) across SaaS, on-prem, and hybrid application portfolios
Engineer and manage MFA policies, authentication method configurations, and phishing-resistant credential adoption (FIDO2, Windows Hello for Business, certificate-based auth)
Lead Conditional Access policy development, testing, and lifecycle governance
Define authentication standards, patterns, and reference architectures for new and existing applications -- and own keeping them current
Evaluate emerging authentication technologies and drive proof-of-concept efforts that inform roadmap decisions
Maintain technical documentation including architecture diagrams, decision records, and runbooks
Partner with Security Architecture to align authentication controls with Zero Trust principles and enterprise security policy
Support audit and compliance activities by providing technical evidence, control narratives, and remediation guidance
Identify gaps in authentication posture and lead engineering remediation efforts
Serve as escalation point for complex authentication incidents and engineering challenges
Mentor and uplift mid-level engineers on the Authentication Services team
Engage with application teams, infrastructure engineering, and security operations as a trusted IAM authority.
Responsibilities of this position include that corporate policies, procedures and security standards are complied with while performing assigned duties.
Safety is a core value at 3M. All employees are expected to contribute to a strong Environmental Health and Safety (EHS) culture by following safety policies, identifying hazards, and engaging in continuous improvement.