Senior Directory Services Engineer & AD Security Lead

Tata Consultancy Services

Irving (TX)

On-site

USD 100,000 - 130,000

Full time

14 days+

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Job summary

Citi is seeking a CISO Technical Lead – Directory Services Engineer to oversee the Active Directory and Hybrid Entra ID environment, ensuring secure, compliant identity platform operations. You will collaborate with global engineering partners, resolve complex incidents, drive process improvements, and lead on-call rotations while aligning tactics with strategic goals.

This role requires 5+ years in AD/Entra ID, deep Windows Server experience, strong LDAP/SSO knowledge, and excellent

Qualifications

5+ years in multi-domain AD environments with Microsoft AD and Entra ID.

Responsibilities

Manage Citi’s Active Directory and Hybrid Entra ID environment.
Collaborate with engineering and operational teams to deliver next‑generation products and platforms.
Troubleshoot and resolve complex problems, identifying root causes.
Perform ongoing resolution of customer incident tickets.
Provide senior‑level guidance and support to global engineering partners, focusing on Active Directory, security management, group policies and other Windows/AD-related technologies.
Identify, analyze and own the resolution of repeat incidents leading to permanent resolution.
Maintain and document internal team processes.
Identify opportunities for process improvements and/or define new processes and procedures.
Host cross‑platform and/or cross‑organization calls with stakeholders to drive project delivery and collaboration when appropriate.
Participate in an on‑call rotation, answering calls for outages or major incidents.
Partner closely with risk teams to build systemic processes that help maintain Citi’s system desired state and enforce compliance.