IT Senior System Administrator Jobs in Ontario

• Bilingual Senior Specialist, Systems Administrator (IT Infrastructure)

  Canada Mortgage and Housing Corporation

  • Ottawa, ON

  • $104,180-130,225 per year

  Job Requisition ID: 11975 Position Status: Permanent Full Time Position Type: Hybrid Office Location: Ottawa (ON); Montreal (QC); Toronto (ON) Travel Requirement: Limited …

• Canada Summer Jobs (CSJ) - Internet Systems Administrator

  Shepherd Village

  • Toronto, ON

  • $17.60 per hour

  This position is created specifically for the 2026 Canada Summer Jobs program. All applicants must meet eligibility guidelines as specified by in order to be considered for the abo…

• Senior Systems Administrator (Platform Services)

  Quantum

  • Toronto, ON

  • $99,121-134,522 per year

  ref. no. 1001085 type Hybrid location Toronto, ON salary $99 000 - $ 130 000 status Permanent Position: Senior Systems Administrator Location: GTA Salary Rang…

• Senior Systems Administrator

  University of Toronto

  • Toronto, ON

  Date Posted: 04/06/2026 Req ID: 47538 Faculty/Division: Library Department: Scholars Portal Campus: St. George (Downtown Toronto) Position Number: 00045513 Existing Vacancy: …

• Senior Specialist, Database Administrator (SQL Server / Azure SQL)

  Canada Mortgage and Housing Corporation

  • Ottawa, ON

  • $104,180-130,225 per year

  Job Requisition ID: 11967 Position Status: Permanent Full Time Position Type: Hybrid Office Location: Ottawa (ON); Montreal (QC) Travel Requirement: Limited Language Desi…

• Senior Specialist, Virtualization, Storage & Backup Administrator

  Canada Mortgage and Housing Corporation

  • Ottawa, ON

  • $104,180-130,225 per year

  Job Requisition ID: 11965 Position Status: Permanent Full Time Position Type: Hybrid Office Location: Ottawa (ON); Montreal (QC) Travel Requirement: Limited Language Desi…

• Senior Systems Administrator

  BenchSci

  • Toronto, ON

  • $100,000-115,000 per year

  BenchSci is looking for a Senior Systems Administrator who combines strong technical depth with a genuine passion for delivering a great employee technology experience. You'll he…

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  • Senior Systems Administrator Jobs in Toronto, ON
  • Jobs in Toronto, ON

• Senior Salesforce Administrator

  Make-A-Wish Foundation

  • Toronto, ON

  • $83,000-88,000 per year

  "The best prescription I've ever given is a wish." -Dr. Jeremy Friedman, Associate Paediatrician-in-Chief, SickKids Hospital & Medical Advisor for Make-A-Wish® Canada WHAT IS Y…

• Senior Salesforce Administrator

  Make-A-Wish Foundation

  • Toronto, ON

  • $83,000-88,000 per year

  "The best prescription I've ever given is a wish." -Dr. Jeremy Friedman, Associate Paediatrician-in-Chief, SickKids Hospital & Medical Advisor for Make-A-Wish® Canada WHAT IS Y…

• System/Network Administrator - Contract

  LRO Staffing

  • Burlington, ON

  Our client in the Manufacturing industry is currently recruiting for a System/Network Administrator to join their progressive IT department. Duties include but are not limited to…

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  • Jobs in Burlington, ON

• Systems & Network Administrator

  Engineering Search Firm

  • Toronto, ON

  • $80,000 per year

  Location: Ontario (Corporate Office) Employment Type: Full-Time, Permanent Hours of Work: Standard 40 hours/week, occasional overtime as required Compensation: Competitive, comm…

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  • Systems Network Administrator Jobs in Toronto, ON
  • Jobs in Toronto, ON

• Bilingual Senior Specialist, Network Administrator

  Canada Mortgage and Housing Corporation

  • Ottawa, ON

  • $104,180-130,225 per year

  Job Requisition ID: 11976 Position Status: Permanent Full Time Position Type: Hybrid Office Location: Ottawa (ON); Montreal (QC); Toronto (ON) Travel Requirement: Limited …

• CAN_System Administrator

  Varite

  • Toronto, ON

  Pay Rate Range: $ 46.42- 47.79/hr. Job Descriptions: Specialist| Solution System Integration Windows ABOUT IT AT CNCN harnesses the power of information every minute of every da…

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  • System Administrator Jobs in Toronto, ON
  • Jobs in Toronto, ON

• Network Administrator

  Canada Mortgage and Housing Corporation

  • Ottawa, ON

  • $86,817-108,521 per year

  Job Requisition ID: 11983 Position Status: Permanent Full Time Position Type: Hybrid Office Location: Ottawa (ON); Calgary (AB); Halifax (NS); Montreal (QC); Toronto (ON); Va…

• Senior Database Administrator, Mainframe

  CIBC

  • Toronto, ON

  We’re building a relationship-oriented bank for the modern world. We need talented, passionate professionals who are dedicated to doing what’s right for our clients. At CIBC, we …

• Senior Contract Administrator

  Toronto Transit Commission

  • Toronto, ON

  • $96,460-120,611 per year

  JOB INFORMATION Requisition ID: 12796 Number of Vacancies: 1 Department: Commercial Management (20001220) - Head & Staff - Commercial Management (30000598) Salary Information:…

• Bilingual Manager, IT Infrastructure (Paas)

  Canada Mortgage and Housing Corporation

  • Ottawa, ON

  • $104,180-130,225 per year

  Job Requisition ID: 11974 Position Status: Permanent Full Time Position Type: Hybrid Office Location: Ottawa (ON); Montreal (QC) Travel Requirement: Limited Language Desi…

• Senior Database Administrator

  360insights

  • Whitby, ON

  *Our salary ranges are determined by role, level, and location. The range reflects the typical range for new hires, it does not reflect the maximum salary for the role over time. …

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  • Senior Database Administrator Jobs in Whitby, ON
  • Jobs in Whitby, ON

• Senior Principal Splunk Administrator

  General Dynamics Mission Systems, Inc

  • Enterprise, ON

  Basic Qualifications : Bachelor's degree in a related specialized area or equivalent is required plus a minimum of 10 years of relevant experience; or Master's degree plus a mini…

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  • Jobs in Enterprise, ON

• Contracts Administrator

  AECON

  • Bowmanville, ON

  • $95,000-110,000 per year

  Come Build Your Career at Aecon! As a Canadian leader in infrastructure development, Aecon is and building what matters for future generations to thrive! We lead some of the most…

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