Solutions Architect

Job Description and Responsibilities

TI is seeking a senior AD and Entra architect to lead the design and evolution of our enterprise identity infrastructure supporting both IT and OT environments. This role will architect and optimize Active Directory and Microsoft Entra ID (Azure AD) solutions that serve as the backbone for identity management across our global organization, supporting 50,000+ users and complex hybrid cloud deployments. You will design scalable identity solutions while ensuring seamless integration between on-premises legacy systems, modern cloud applications, and increasingly critical operational technology environments.

Key responsibilities will be as follows:

Design and implement enterprise-scale Active Directory forest architectures, including multi-domain topologies, trust relationships, and site replication strategies

Architect Microsoft Entra ID tenant configurations supporting hybrid identity scenarios, conditional access policies, and zero-trust security models

Develop and enforce identity governance frameworks including role-based access control (RBAC), privileged identity management (PIM), and lifecycle management processes

Design secure authentication and authorization patterns for enterprise applications, including SAML, OAuth 2.0, OpenID Connect, and Kerberos implementations

Partner with cybersecurity, infrastructure, and application teams to establish identity security standards and access management best practices

Evaluate and integrate emerging identity technologies to enhance user experience while maintaining security posture

Lead cross-functional identity modernization initiatives, including legacy application migration and cloud-first identity strategies

Provide technical leadership and mentoring to identity engineering teams across global locations

Establish monitoring and governance frameworks to ensure identity infrastructure performance, compliance, and security metric. Enterprise identity management:

Identity lifecycle management and automated provisioning/deprovisioning

Role-based access control (RBAC), Attribute-based access control (ABAC) & Policy based-access control (PBAC) models

Single Sign-On (SSO) architecture for SaaS, on-premises, and hybrid applications

Multi-factor authentication (MFA) strategy and implementation across diverse application portfolios

Directory synchronization patterns and identity data governance

Operational Technology (OT) identity management experience:

Access management for industrial control systems (SCADA, DCS, PLCs)

Understanding of OT network segmentation and air-gapped environment challenges

Experience with OT-specific authentication protocols and legacy system integration

Hardening & segregation of legacy OT systems, services & data avoiding downtime or disruptions

Technical architecture skills:

PowerShell, Microsoft Graph API, and Azure CLI for identity automation

Directory services protocols (LDAP, LDAPS, Kerberos, NTLM)

Network architecture understanding for identity services (DNS, firewalls, load balancers)

Windows Server infrastructure and enterprise-scale system administration

Cloud architecture patterns in Azure, with understanding of other major cloud platforms

Leadership and communication:

Proven ability to influence technical decision‑making across global, cross‑functional teams

Exceptional communication skills to translate complex identity concepts for business stakeholders

Experience mentoring and developing technical teams in identity management practices

Strong project management capabilities for large‑scale identity transformation initiatives

Preferred/Nice-to-Have Skills:

Experience with other identity platforms (Ping Identity, SailPoint, AWS IAM)

Knowledge of compliance frameworks relevant to identity management (SOX, GDPR, HIPAA, NIST)

Certifications in Microsoft identity technologies (SC-300, MS-102) or equivalent vendor certifications

Experience with identity analytics, risk‑based authentication, and behavioural analysis tools

Understanding of DevSecOps practices and infrastructure‑as‑code for identity deployments

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