System Administrator

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.

• Years of hands‑on experience in on‑premises Microsoft Active Directory administration and support.
• Strong expertise in Active Directory domain and forest design, trust relationships, and troubleshooting.
• In‑depth knowledge of directory infrastructure including FSMO roles, Kerberos authentication, KDCs, DNS integration, Sites & Services, SYSVOL, and replication topology.
• Hands‑on experience installing, configuring, administering, and troubleshooting Windows Server Active Directory (2008, 2012, and later versions).
• Strong understanding of OU design, object lifecycle management, schema updates, permissions delegation, inheritance, and security group design.
• Expertise in Group Policy Management, including design, precedence, enforcement, blocking, and troubleshooting.
• Strong experience with Active Directory‑integrated DNS configuration and issue resolution.
• Hands‑on experience with Active Directory Certificate Services (AD CS / PKI) including trust models and integration with AD; experience with DFS/DFSR, SYSVOL health, and replication troubleshooting.
• Ability to develop and maintain Power Shell scripts for AD administration, health checks, reporting, and automation.

• Design, configure, administer, and support on‑premises Active Directory environments, including multi‑domain and multi‑forest setups.
• Perform Active Directory trust creation, validation, and troubleshooting across forests and domains.
• Own and maintain the overall health of Active Directory, including replication, DNS integration, SYSVOL, and time synchronization.
• Manage, troubleshoot, and optimize Group Policy Objects (GPOs) to meet enterprise operational and governance requirements.
• Administer and support Active Directory Certificate Services (AD CS / PKI), including CA hierarchy management (Root and Issuing CAs).

CA $ 100,000 – CA $ 120,000 per annum.

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.