Active Directory L3 Support Engineer

Job summary

Maintain and monitor Active Directory infrastructure, execute controlled production changes, and troubleshoot replication, authentication, and Group Policy issues. Support IAM and other teams, automate routine checks with PowerShell, maintain technical documentation, and participate in on-call rotations.

Job details

Inclusion without Exception 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. Tata Consultancy Services (BSE: 532540, NSE: TCS) is the technology partner of choice for industry-leading organizations worldwide. Since its inception in 1968, TCS has upheld the highest standards of innovation, engineering excellence and customer service. It has set an aspiration to become the world's largest AI-led technology services company and is enabling its clients to transform themselves across the full AI stack, from infrastructure to intelligence. Rooted in the heritage of the Tata Group, TCS is focused on creating long term value for its clients, its investors, its employees, and the community at large. With a highly skilled workforce spread across 56 countries and 194 service delivery centers across the world, the company has been recognized as a top employer in six continents. With the ability to rapidly apply and scale new technologies, the company has built long term partnerships with its clients. Many of these relationships have endured into decades and navigated every technology cycle, from mainframes in the 1970s to artificial intelligence today. 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 TCS does not use artificial intelligence tools for candidate screening or evaluation. This post is for a current vacancy. The hiring process includes an initial screening, followed by a technical evaluation and managerial discussion. Tata Consultancy Services Canada Inc. is committed to meeting the accessibility needs of all individuals in accordance with the Accessibility for Ontarians with Disabilities Act (AODA) and the Ontario Human Rights Code (OHRC). Should you require accommodation during the recruitment and selection process, please inform Human Resources. Thank you for your interest in TCS. Candidates that meet the qualifications for this position will be contacted within a 2-week period. We invite you to continue to apply for other opportunities that match your profile.

What you’ll do

Maintain and monitor Active Directory infrastructure, execute controlled production changes, and troubleshoot replication, authentication, and Group Policy issues. Support IAM and other teams, automate routine checks with PowerShell, maintain technical documentation, and participate in on-call rotations.

Requirements

The role requires hands-on expertise in Active Directory operations, security hardening, migrations, monitoring, and troubleshooting, along with strong PowerShell scripting skills. Candidates should be familiar with PAM, Zero Trust principles, and CIS benchmarks, and demonstrate accuracy, adaptability, collaboration, and a focus on compliance.

Listed skills

• Active Directory · Preferred

Other relevant skills

Identified from the job description. Confirm important requirements above.

• Active Directory
• Active Directory Replication
• Domain Controller Management
• Group Policy
• Active Directory Security Hardening
• LDAP Security
• Privileged Account Management
• Active Directory Migrations
• Windows Server Upgrades
• DNS Integration
• Active Directory Troubleshooting
• PowerShell Scripting
• Repadmin
• DCdiag
• Privileged Access Management
• Zero Trust

Job areas

• Technology
• Security & Safety
• Customer Service & Support

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