System Administrator

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.

Role Description:

• 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:

• CA hierarchy design (Root / Issuing CAs)

• Certificate templates

• Certificate lifecycle (issuance, renewal, revocation)

• Trust models and integration with AD

• Experience with DFS / DFSR, SYSVOL health, and replication troubleshooting.

• Ability to develop and maintain PowerShell scripts for AD administration, health checks, reporting, and automation.

Key Responsibilities

• 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)

Salary Range - CA$ 100,000 - CA$ 120,000 Per annum

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.