Active Directory L3 Support Engineer

Tata Consultancy Services (TCS) is an equal opportunity employer, and embraces diversity in race, nationality, ethnicity, gender, age, physical ability, neurodiversity, and sexual orientation, to create a workforce that reflects the societies we operate in. Our continued commitment to Culture and Diversity is reflected in our people stories across our workforce and implemented through equitable workplace policies and processes.

Active Directory L3 Support Engineer

Key Requirements

Active Directory operations including replication, domain controller management, and Group Policy infrastructure

Expertise in security hardening of Active Directory, including securing LDAP channels, disabling legacy protocols such as NTLM, and managing privileged accounts

Proven experience in Active Directory migrations including functional level upgrades, domain consolidations, and Windows Server upgrades

Monitor Active Directory health including domain controllers, replication, and DNS integration

Execute production changes such as patching, domain controller promotion, and configuration updates following strict change control processes

Troubleshoot issues such as replication delays, authentication failures, and Group Policy conflicts using tools like Repadmin and DCdiag

Provide support and guidance to IAM and other teams on Active Directory-related issues

Ensure compliance with internal policies, regulatory standards, and audit requirements

Automate routine tasks using PowerShell scripting including log analysis and system health checks

Collaborate with cybersecurity, networking, and cross-functional teams

Maintain documentation and technical guides for processes and operations

Participate in on‑call rotations including nights and weekends for critical incidents

Hands‑on experience with Active Directory troubleshooting and monitoring tools

Strong scripting skills with PowerShell

Familiarity with PAM, Zero Trust principles, and CIS benchmarks

Skills & Mindset

Adaptable with ability to handle shifting priorities

Detail‑oriented with strong focus on accuracy and compliance

Collaborative with clear communication across teams

Proactive in identifying risks and driving solutions

Salary Range - CA$ 90,000 - CA$ 110,000 Per Year

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