Senior System Administrator

Senior System Administrator

Position Description
The Senior System Administrator is responsible for administering, maintaining, and securing enterprise systems to ensure stable, reliable, and high-performing IT operations. This role requires a seasoned technical professional with expertise in system configuration, access controls, patch management, and issue resolution across complex environments.

Your future duties and responsibilities
Key Responsibilities
• Manage system configurations, access controls, and security settings to maintain compliance, operational integrity, and system reliability.
• Oversee patching, updates, and system maintenance activities to ensure all systems remain secure, current, and fully functional.
• Troubleshoot and resolve complex system issues, performing root‑cause analysis and implementing durable corrective actions.
• Monitor enterprise systems for performance, availability, and capacity concerns, ensuring proactive system health and stability.
• Support operational processes, maintenance schedules, and system lifecycle management across production and non‑production environments.
• Maintain enterprise application environments and system infrastructure, ensuring alignment with organizational standards and security requirements.
• Collaborate with engineering, cybersecurity, and operations teams to support system upgrades, integration efforts, and modernization initiatives.
• Document system configurations, maintenance procedures, and troubleshooting steps to support operational continuity and repeatability.
• Assist in the development and implementation of system hardening, access management, and security best practices.

Required qualifications to be successful in this role
• Minimum of 7 years of experience administering enterprise applications and systems in complex IT environments.
• Minimum of 3 years of experience troubleshooting and resolving system issues.
• Experience managing system configurations, access controls, and patch management activities.
• Strong understanding of system monitoring, performance tuning, and operational best practices.
• Demonstrated experience maintaining secure, stable, and compliant enterprise systems.
• Excellent problem-solving, communication, and documentation skills.

Together, as owners, let’s turn meaningful insights into action.

Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you’ll reach your full potential because…

You are invited to be an owner from day 1 as we work together to bring our Dream to life. That’s why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company’s strategy and direction.

Your work creates value. You’ll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise.

You’ll shape your career by joining a company built to grow and last. You’ll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons.

Come join our team—one of the largest IT and business consulting services firms in the world.

Qualified applicants will receive consideration for employment without regard to their race, ethnicity, ancestry, color, sex, religion, creed, age, national origin, citizenship status, disability, pregnancy, medical condition, military and veteran status, marital status, sexual orientation or perceived sexual orientation, gender, gender identity, and gender expression, familial status or responsibilities, reproductive health decisions, political affiliation, genetic information, height, weight, or any other legally protected status or characteristics to the extent required by applicable federal, state, and/or local laws where we do business.

CGI provides reasonable accommodations to qualified individuals with disabilities. If you need an accommodation to apply for a job in the U.S., please email the CGI U.S. Employment Compliance mailbox at View email address on clients.njoyn.com . You will need to reference the Position ID of the position in which you are interested. Your message will be routed to the appropriate recruiter who will assist you. Please note, this email address is only to be used for those individuals who need an accommodation to apply for a job. Emails for any other reason or those that do not include a Position ID will not be returned.

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All CGI offers of employment in the U.S. are contingent upon the ability to successfully complete a background investigation. Background investigation components can vary dependent upon specific assignment and/or level of US government security clearance held. Dependent upon role and/or federal government security clearance requirements, and in accordance with applicable laws, some background investigations may include a credit check. CGI will consider for employment qualified applicants with arrests and conviction records in accordance with all local regulations and ordinances.

CGI will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with CGI’s legal duty to furnish information.