Senior System Administrator

ADGA Group; Ottawa; On-site; CAD 80,000 - 100,000; Full time

Job summary

A technology service provider in Ottawa is seeking a Senior Systems Administrator to ensure the optimal performance of distributed network infrastructure. The role involves testing systems, developing documentation, and providing support for operational readiness. The ideal candidate will have over 5 years of IT experience and a degree from a Canadian institution. This position offers competitive compensation, including a profit-sharing plan and comprehensive benefits.

Benefits

Maternity/Parental Top-Up

Reservist Leave Top-Up

Health & Dental benefits

Telemedicine service

Qualifications

• Minimum 5 years of IT experience.
• Experience in administrating system modules in a 'System of Systems' environment.
• Degree or diploma equivalent to Canadian standards.

Responsibilities

• Develop and maintain system documentation and procedures.
• Test and monitor systems for operational readiness.
• Provide systems administration support for distributed networks.
• Implement security practices and perform monitoring.
• Train and mentor junior technical staff.
• Participate in change management processes.

Skills

System performance testing

Documentation maintenance

Network infrastructure support

System monitoring and troubleshooting

Security best practices

Scripting (PowerShell, Bash, Python)

IT compliance standards

Education

Degree in Science or Engineering or IT from a Canadian university

Tools

Microsoft Exchange Server

Windows Servers

Linux Servers

Endpoint protection software

Job description

ADGA is seeking a Senior Systems Administrator to test and monitor system performance, and to develop and maintain technical and system Concepts of Operations, designs, standard operating procedures, architectural diagrams, and descriptions for activities that use our defence client’s distributed network infrastructure. The Administrator will also be required to provide systems support to the Joint Battle Lab (JBL) / Integrated Test Bed (ITB) for experimentation, training, demonstration, and for C5ISR requirements.

Tasks

• Develop and maintain technical and system documentation, standard operating procedures, designs, and descriptions for activities that use the CJWC’s distributed infrastructure.
• Test and monitor systems to maintain or improve the operational readiness of the CJWC’s distributed infrastructure and to identify vulnerabilities and recommend corrective measures.
• Provide systems administration support to the CJWC’s distributed network and any interconnectivity to other national and international networks.
• Maintain and update system maintenance procedures for infrastructure and associated services.
• Patch, update, administer, configure, and operate CJWC systems and infrastructure including:
  • Server infrastructure
  • Network storage
  • System and infrastructure automation
  • Virtualization infrastructure
  • Virtual desktop infrastructure
  • Virtual networking infrastructure
  • Microsoft services (Active Directory, file/print server, group policy objects, and other)
  • Microsoft Exchange Server (including create user mailboxes and distribution lists, server maintenance)
  • Endpoint protection software (e.g., Trellix)
  • Windows servers (various versions)
  • Linux servers (various distributions)
• Perform system monitoring, troubleshooting, and scheduled maintenance for servers and workstations.
• Implement and maintain security best practices, including system hardening, access controls, and audit logging in accordance with departmental and national cybersecurity policies.
• Support security incident response activities, including forensic data collection, analysis, and reporting.
• Develop and maintain scripts (e.g., PowerShell, Bash, Python) to automate routine system administration tasks and improve operational efficiency.
• Ensure compliance with IT security standards such as ITSG-33, as applicable.
• Configure and maintain system monitoring to proactively detect and resolve issues.
• Provide training and mentorship to junior administrators and technical staff.
• Conduct knowledge transfer sessions and maintain up-to-date documentation for continuity and onboarding.
• Participate in and support change management processes, including risk assessments, implementation planning, configuration updates, documentation, and post-change reviews in accordance with departmental policies.
• Travel to multiple sites and locations in support of the above-mentioned roles and systems.

Qualifications

• A degree from a Canadian* university in the field of Science or Engineering or any Information Technology (IT) field; or a diploma from a Canadian* college in the field of Science or Engineering or any IT field; or any other degree or diploma from a Canadian* university or Canadian* college.
  • *Where the post‑secondary degree or diploma was completed and obtained outside of Canada, Canada may accept a Canadian academic equivalency document issued by a recognized academic credentials assessment organization showing the academic level obtained
• A minimum of 5 years of IT experience.
• A minimum of 4 years of experience in the last 6 years, from the date of task authorization issuance, analyzing, developing, administrating, and implementing system modules, subsystems and programs within a "System of Systems"* environment.
  • *A system of systems is defined as a collection of task‑oriented or dedicated systems that pool their resources and capabilities together to create a new, more complex system which offers more functionality and performance than simply the sum of the constituent systems.

Additional Information

Work-Life Balance

We strongly support a healthy and productive work-life balance. This starts with a flexible approach to work, and policies designed to support employees through their day-to-day routines and major life events. For example, we offer a Maternity/Parental Top-Up (up to 52 weeks) and a Reservist Leave Top-Up (up to 180 days).

Belong@ADGA

ADGA continuously strives to integrate advanced Diversity, Equity & Inclusion (DEI) approaches and practices into our work culture. Our employee‑based DEI Committee explores activities and invites discussions that foster an environment where all employees feel valued, respected, and heard.

Compensation

Above and beyond our commitment to offer a competitive base salary, ADGA has a company-wide profit‑sharing plan for all full‑time and part‑time employees.

Comprehensive Benefits and Total Rewards

We offer a comprehensive benefit program, providing employees with the choice between base or enhanced plans. Depending on the plan, ADGA pays for Health & Dental, a Health Spending Account, Short‑Term Disability, an Employee Assistance Program, and a Telemedicine service. Also offered: discounts on gym memberships, 5,000+ perks through Perkoplis, a Deferred Profit Sharing Plan, and access to a wide range of other employee‑centric services and savings programs.