Unix Administrator

Toronto, ON
On-site
Posted Oct 9, 2026
1 position

$90,000–$100,000 / year

Opens LinkedIn

Employment type: Full-time
Experience level: Senior · 5+ years
Posting language: English
Working hours: 40 hours per week
Seniority: Mid-Senior level
Application method: Direct apply is available

Job summary

Administer, maintain, monitor, and troubleshoot Unix/Linux servers across development and production environments, including managing filesystems, access, patches, backups, and system performance. Automate routine operations with Shell/Bash scripts, support incidents and changes within SLA requirements, collaborate across technical teams, and maintain operational documentation and security standards.

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. Key Responsibilities Install, configure, administer, maintain, and troubleshoot Unix/Linux servers across development, test, staging, and production environments. Perform day-to-day system administration activities including user/group management, file systems, permissions, processes, services, disk space, and resource utilization. Monitor server health, CPU, memory, storage, processes, and system performance, and proactively address potential issues. Troubleshoot complex Unix/Linux infrastructure and application-related issues and perform root cause analysis for recurring incidents. Perform patching, upgrades, vulnerability remediation, configuration changes, and system maintenance in accordance with enterprise change-management processes. Develop and maintain Shell/Bash scripts to automate routine administration, monitoring, housekeeping, and operational activities. Manage file systems, storage utilization, mounts, scheduled jobs, log rotation, and system backups. Support production incidents, service requests, problem management, and change management while meeting defined SLA requirements. Work closely with application, database, network, middleware, security, cloud, and infrastructure teams to resolve technical issues. Perform system capacity and performance analysis and recommend improvements to enhance stability and availability. Maintain operational documentation, SOPs, troubleshooting guides, configuration details, and knowledge-base articles. Participate in on-call, after-hours, weekend, and shift-based production support as required. Ensure adherence to organizational security standards, access controls, audit requirements, and infrastructure best practices. Top 3 Required Skills Unix/Linux System Administration and Troubleshooting Shell/Bash Scripting and Automation Production Support, Monitoring, and Incident Management Top 3 Preferred Skills Banking/Financial Services experience AWS/Cloud infrastructure knowledge Ansible/Infrastructure Automation experience Salary Range - CA$ 90,000 - CA$ 100,000 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

Requirements

The role requires Unix/Linux system administration and troubleshooting, Shell/Bash scripting and automation, and experience supporting production systems through monitoring and incident management. Banking or financial services experience, AWS/cloud knowledge, and Ansible or other infrastructure automation experience are preferred.